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NSR database version of April 27, 2024.

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2023BR10      Phys.Lett. B 847, 138310 (2023)

A.D.Briscoe, R.D.Page, J.Uusitalo, D.T.Joss, M.A.M.AlAqeel, B.Alayed, B.Andel, S.Antalic, K.Auranen, H.Ayatollahzadeh, H.Badran, L.Barber, G.Beeton, M.Birova, V.Bogdanoff, R.M.Clark, J.G.Cubiss, D.M.Cullen, J.Deary, U.Forsberg, T.Grahn, P.T.Greenlees, J.B.Hilton, A.Illana, H.Joukainen, D.S.Judson, R.Julin, H.Jutila, J.M.Keatings, M.Labiche, M.Leino, M.C.Lewis, J.Louko, M.Luoma, I.Martel, A.McCarter, P.P.McKee, P.Mosat, S.N.Nathaniel, O.Neuvonen, D.O'Donnell, J.Ojala, C.A.A.Page, A.M.Plaza, J.Pakarinen, P.Papadakis, E.Parr, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, B.Saygi, J.Smallcombe, J.F.Smith, J.Sorri, C.M.Sullivan, S.Szwec, H.Tann, A.Tolosa-Delgado, E.Uusikyla, M.Venhart, L.J.Waring, G.Zimba

Decay spectroscopy at the two-proton drip line: Radioactivity of the new nuclides ¹⁶⁰Os and ¹⁵⁶W

RADIOACTIVITY ¹⁶⁰Os(α), ¹⁵⁶W(β⁺), (EC), ¹⁵⁶Ta(p) [from ¹⁰⁶Cd(⁵⁸Ni, X)¹⁶⁰Os, ¹⁰²Pd(⁵⁸Ni, X)¹⁵⁶Ta, E=310, 294 MeV]; measured decay products, Eα, Iα, Ep, Ip, Eβ, Iβ; deduced α-particles energies, T_1/2, an improved value for the half-life of the proton-decaying high-spin isomeric state. Comparison with available data. The recoil separator MARA, the Accelerator Laboratory of the University of Jyvaskyla.

doi: 10.1016/j.physletb.2023.138310
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2023CH46      Phys.Rev.Lett. 131, 172501 (2023)

R.J.Charity, J.Wylie, S.M.Wang, T.B.Webb, K.W.Brown, G.Cerizza, Z.Chajecki, J.M.Elson, J.Estee, D.E.M.Hoff, S.A.Kuvin, W.G.Lynch, J.Manfredi, N.Michel, D.G.McNeel, P.Morfouace, W.Nazarewicz, C.D.Pruitt, C.Santamaria, S.Sweany, J.Smith, L.G.Sobotka, M.B.Tsang, A.H.Wuosmaa

Strong Evidence for ⁹N and the Limits of Existence of Atomic Nuclei

RADIOACTIVITY ⁹N(p), ⁸C, ⁶Be(2p) [from ⁹Be(¹³O, X)⁹N, E=69.5 MeV/nucleon]; measured decay products, Ep, Ip. ⁹N, ⁸C; deduced invariant-mass spectra, level diagrams, possible single resonancelike peak in the spectrum. R-matrix fits, comparison with the theoretical predictions of an open-quantum-system approach. The National Superconducting Cyclotron Laboratory at Michigan State University.

doi: 10.1103/PhysRevLett.131.172501
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2023DE27      Eur.Phys.J. A 59, 198 (2023)

J.Deary, M.Scheck, R.Schwengner, D.O'Donnell, D.Bemmerer, R.Beyer, Th.Hensel, A.R.Junghans, T.Kogler, S.E.Muller, K.Romer, K.Schmidt, S.Turkat, S.Urlass, A.Wagner, M.Bowry, P.Adsley, O.Agar, R.Chapman, F.C.L.Crespi, D.T.Doherty, U.Friman-Gayer, R.-D.Herzberg, J.Isaak, R.V.F.Janssens, T.Kroll, B.Loher, B.S.Nara Singh, P.von Neumann-Cosel, L.Pellegri, E.E.Peters, G.Rainovski, D.Savran, J.F.Smith, M.Spieker, P.G.Thirolf, S.Triambak, W.Tornow, M.Venhart, M.Wiedeking, O.Wieland, S.W.Yates, A.Zilges

Photo-response of the N = Z nucleus ²⁴Mg

NUCLEAR REACTIONS ²⁴Mg(γ, γ'), E<13 MeV; measured reaction products, Eγ, Iγ; deduced energy-integrated scattering σ, B(M1), B(E1). Comparison with available data. The ELBE accelerator of the Helmholtz-Zentrum Dresden-Rossendorf.

doi: 10.1140/epja/s10050-023-01111-7
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2023JE01      Phys.Lett. B 837, 137641 (2023)

D.Y.Jeung, D.J.Hinde, M.Dasgupta, C.Simenel, E.C.Simpson, K.J.Cook, H.M.Albers, J.Buete, I.P.Carter, Ch.E.Dullmann, J.Khuyagbaatar, B.Kindler, N.Lobanov, B.Lommel, C.Mokry, E.Prasad, J.Runke, C.Sengupta, J.F.Smith, P.Thorle-Pospiech, N.Trautmann, K.Vo-Phuoc, J.Walshe, E.Williams, A.Yakushev

Sequential fission and the influence of ²⁰⁸Pb closed shells on the dynamics of superheavy element synthesis reactions

NUCLEAR REACTIONS ²³⁸U, ²⁴⁴Pu, ²⁴⁸Cm, ²⁴⁹Cf(⁵⁰Ti, F), E ∼ 230 MeV; measured fission fragments. ²⁰⁸Pb; deduced σ, binary quasifission mass spectra, sequential fission survival probabilities. The ANU Heavy Ion Accelerator Facility.

doi: 10.1016/j.physletb.2022.137641
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2023KU21      Phys.Rev. C 108, 044313 (2023)

V.Kumar, R.Chapman, D.O'Donnell, J.Ollier, R.Orlandi, J.F.Smith, K.-M.Spohr, D.A.Torres, P.Wady, S.K.Tandel, S.J.Freeman, G.de Angelis, N.Marginean, D.R.Napoli, J.J.Valiente-Dobon, S.Aydin, E.Farnea, R.Marginean, D.Mengoni, T.Kroll, N.Thompson

Evolution of nuclear structure in the neutron-rich ^{96, 97, 99}Nb isotopes: Evidence for shape coexistence in N = 58 ⁹⁹Nb

doi: 10.1103/PhysRevC.108.044313
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2023SU03      Phys.Lett. B 839, 137801 (2023)

L.J.Sun, C.Fry, B.Davids, N.Esker, C.Wrede, M.Alcorta, S.Bhattacharjee, M.Bowry, B.A.Brown, T.Budner, R.Caballero-Folch, L.Evitts, M.Friedman, A.B.Garnsworthy, B.E.Glassman, G.Hackman, J.Henderson, O.S.Kirsebom, J.Lighthall, P.Machule, J.Measures, M.Moukaddam, J.Park, C.Pearson, D.Perez-Loureiro, C.Ruiz, P.Ruotsalainen, J.Smallcombe, J.K.Smith, D.Southall, J.Surbrook, L.E.Weghorn, M.Williams

First application of Markov chain Monte Carlo-based Bayesian data analysis to the Doppler-shift attenuation method

NUCLEAR REACTIONS ³He(³²S, α)³¹S, E=128 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, levels, T_1/2, resonances. Comparison with the shell-model code NuShellX calculations. Modern Markov chain Monte Carlo-based Bayesian statistical techniques. The Doppler Shift Lifetimes (DSL2) facility at the TRIUMF Isotope Separator and Accelerator (ISAC-II) facility.

doi: 10.1016/j.physletb.2023.137801
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2023YA17      Phys.Rev. C 107, 064309 (2023)

D.Yates, R.Krucken, I.Dillmann, P.E.Garrett, B.Olaizola, V.Vedia, F.A.Ali, C.Andreoiu, W.Ashfield, G.C.Ball, Z.Beadle, N.Bernier, S.S.Bhattacharjee, H.Bidaman, V.Bildstein, D.Bishop, M.Bowry, C.Burbadge, R.Caballero-Folch, D.Z.Chaney, D.C.Cross, A.Diaz Varela, M.R.Dunlop, R.Dunlop, L.J.Evitts, F.H.Garcia, A.B.Garnsworthy, S.Georges, S.A.Gillespie, G.Hackman, J.Henderson, B.Jigmeddorj, J.Lassen, R.Li, B.K.Luna, A.D.MacLean, C.R.Natzke, C.M.Petrache, A.J.Radich, M.M.Rajabali, P.H.Regan, Y.Saito, J.Smallcombe, J.K.Smith, M.Spieker, C.E.Svensson, A.Teigelhofer, K.Whitmore, T.Zidar

Decay spectroscopy of ¹⁶⁰Eu: Quasiparticle configurations of excited states and structure of K^π = 4⁺ bandheads in ¹⁶⁰Gd

RADIOACTIVITY ^160,160mEu(β^-)[from U(p, X), E=480 MeV]; measured Eγ, Iγ, γγ-coin, γγ(θ) βγγ-coin; deduced logft, β-feeding intensities. ¹⁶⁰Eu; deduced J, π of the b-decaying isomeric states with preliminary J=1 and J=5 assignments, configurations. ¹⁶⁰Gd; deduced levels, J, π, transition intensities, δ, B(M1), B(E2), T_1/2 of the excited states populated in ¹⁶⁰Eu decay, band configurations. Comparison to previous experimental results. GRIFFIN spectrometer consisting of 15 HPGe clover detectors and surrounded by 7 LaBr₃(Ce) detectors for lifetime measurements at the TRIUMF-ISAC facility.

doi: 10.1103/PhysRevC.107.064309
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2022GR07      Phys.Rev. C 106, 024314 (2022)

L.Grocutt, R.Chapman, M.Bouhelal, F.Haas, A.Goasduff, J.F.Smith, R.S.Lubna, S.Courtin, D.Bazzacco, T.Braunroth, L.Capponi, L.Corradi, X.Derkx, P.Desesquelles, M.Doncel, E.Fioretto, A.Gottardo, V.Liberati, B.Melon, D.Mengoni, C.Michelagnoli, T.Mijatovic, V.Modamio, G.Montagnoli, D.Montanari, K.F.Mulholland, D.R.Napoli, C.M.Petrache, A.Pipidis, F.Recchia, E.Sahin, P.P.Singh, A.M.Stefanini, S.Szilner, J.J.Valiente-Dobon

Lifetime measurements of states of ³⁵S, ³⁶S, ³⁷S, and ³⁸S using the AGATA γ-ray tracking spectrometer

NUCLEAR REACTIONS ²⁰⁸Pb(³⁶S, X)³⁵S/³⁶S/³⁷S/³⁸S, E=225 MeV; measured mass spectra of sulfur isotopes, Eγ, (particle)γ-coin, level T_1/2 by differential recoil-distance Doppler-shift method using Cologne plunger apparatus, PRISMA magnetic spectrometer and AGATA demonstrator array of five triple cluster segmented Ge detectors at the Tandem-ALPI accelerator complex of INFN-Legnaro. ^35,36,37,38S; deduced levels, J, π, T_1/2 of levels, B(E2), B(E1), configurations. Comparison with shell-model calculations using PSDPF, SDPF-U, and FSU effective interactions.

doi: 10.1103/PhysRevC.106.024314
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2022PA09      Phys.Rev. C 105, 034303 (2022)

E.Parr, J.F.Smith, P.T.Greenlees, P.A.Butler, K.Auranen, R.Chapman, D.M.Cox, D.M.Cullen, L.P.Gaffney, T.Grahn, E.T.Gregor, L.Grocutt, A.Herzan, R.-D.Herzberg, D.Hodge, U.Jakobsson, R.Julin, S.Juutinen, J.M.Keatings, J.Konki, M.Leino, P.P.McKee, C.McPeake, D.Mengoni, A.K.Mistry, B.S.Nara Singh, G.G.O'Neill, J.Pakarinen, P.Papadakis, J.Partanen, P.Peura, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, M.Scheck, C.Scholey, M.Siciliano, M.Smolen, J.Sorri, P.Spagnoletti, K.M.Spohr, S.Stolze, M.J.Taylor, J.Uusitalo

Single-particle states and parity doublets in odd-Z ²²¹Ac and ²²⁵Pa from α-decay spectroscopy

RADIOACTIVITY ²²⁵Pa, ²²¹Ac(α)[²²⁵Pa from ²⁰⁸Pb(²⁰Ne, 2np), E=105 MeV, ²²¹Ac from ²⁰⁸Pb(¹⁸O, 4np), E=95 MeV, ²⁰⁸Pb(²⁰Ne, 2npα), E=105 MeV and ²²⁵Pa α decay]; ²¹⁷Fr(α)[from ²²¹Ac α decay]; ²¹³At(α)[from ²¹⁷Fr α decay]; measured reaction products, Eα, Iα, Eγ, Iγ, αγ-coin, summed α+ce(K); deduced T_1/2 decays of ground states of ²²⁵Pa, ²²¹Ac, ²¹⁷Fr, ²¹³At. ²²¹Ac, ²¹⁷Fr; deduced levels, J, π, α- and γ-branching ratios, total conversion coefficients, multipolarities, α-hindrance factors, configurations, parity-doublet states in ²²¹Ac. ²²⁵Pa; deduced ground state J, π. Comparison with previous experimental data, and with model predictions. RITU gas-filled recoil separator, silicon strip detectors (DSSD) for ion implantation measurements and GREAT spectrometer combined with 3 HPGe clover detectors at the University of Jyvaskyla accelerator facility.

doi: 10.1103/PhysRevC.105.034303
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2022SP01      Phys.Rev. C 105, 024323 (2022)

P.Spagnoletti, P.A.Butler, L.P.Gaffney, K.Abrahams, M.Bowry, J.Cederkall, T.Chupp, G.de Angelis, H.De Witte, P.E.Garrett, A.Goldkuhle, C.Henrich, A.Illana, K.Johnston, D.T.Joss, J.M.Keatings, N.A.Kelly, M.Komorowska, J.Konki, T.Kroll, M.Lozano, B.S.Nara Singh, D.O'Donnell, J.Ojala, R.D.Page, L.G.Pedersen, C.Raison, P.Reiter, J.A.Rodriguez, D.Rosiak, S.Rothe, M.Scheck, M.Seidlitz, T.M.Shneidman, B.Siebeck, J.Sinclair, J.F.Smith, M.Stryjczyk, P.Van Duppen, S.Vinals, V.Virtanen, K.Wrzosek-Lipska, N.Warr, M.Zielinska

Coulomb excitation of ²²²Rn

NUCLEAR REACTIONS ¹²⁰Sn, ⁶⁰Ni(²²²Rn, ²²²Rn'), E=4.23 MeV/nucleon [secondary ²²²Rn beam produced in Th(p, X), E=1.4 GeV reaction]; measured reaction products, Eγ, Iγ, (particle)γ-coin. ²²²Rn; deduced levels, J, π, E1, E2 and E3 matrix elements, high-spin levels, bands, intrinsic quadrupole and octupole moments. GOSIA analysis of Coulomb excitation cross sections. Miniball HPGe array at HIE-ISOLDE. Systematics of quadrupole moments and other parameters in even-A Ra and Rn isotopes.

doi: 10.1103/PhysRevC.105.024323
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2021BA41      Phys.Lett. B 820, 136601 (2021)

K.Banerjee, D.J.Hinde, M.Dasgupta, J.Sadhukhan, E.C.Simpson, D.Y.Jeung, C.Simenel, B.M.A.Swinton-Bland, E.Williams, L.T.Bezzina, I.P.Carter, K.J.Cook, H.M.Albers, Ch.E.Dullmann, J.Khuyagbaatar, B.Kindler, B.Lommel, C.Mokry, E.Prasad, J.Runke, N.Schunck, C.Sengupta, J.F.Smith, P.Thorle-Pospiech, N.Trautmann, K.Vo-Phuoc, J.Walshe, A.Yakushev

Sensitive search for near-symmetric and super-asymmetric fusion-fission of the superheavy element Flerovium (Z=114)

NUCLEAR REACTIONS ²⁰⁸Pb, ²⁴⁴Pu(⁴⁸Ca, X), ²³²Th(⁵⁴Cr, X)Fl, E not given; analyzed available data; deduced masses, σ(θ). Comparison with microscopic calculations of Helmholtz free energy surfaces (FES).

doi: 10.1016/j.physletb.2021.136601
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2021CH19      Phys.Rev.Lett. 126, 132501 (2021)

R.J.Charity, T.B.Webb, J.M.Elson, D.E.M.Hoff, C.D.Pruitt, L.G.Sobotka, K.W.Brown, G.Cerizza, J.Estee, W.G.Lynch, J.Manfredi, P.Morfouace, C.Santamaria, S.Sweany, C.Y.Tsang, M.B.Tsang, Y.Zhang, K.Zhu, S.A.Kuvin, D.McNeel, J.Smith, A.H.Wuosmaa, Z.Chajecki

Observation of the Exotic Isotope ¹³F Located Four Neutrons beyond the Proton Drip Line

NUCLEAR REACTIONS ⁹Be(¹³O, ¹³F), E=69.5 MeV/nucleon; measured reaction products, Ep, Ip. ¹³F, ¹²O, ¹¹N, ¹⁰C, ⁹B, ⁸Be; deduced ¹³F resonance parameters, energy levels, J, π, level decays via initial proton emissions.

doi: 10.1103/PhysRevLett.126.132501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2686. Data from this article have been entered in the XUNDL database. For more information, click here.

2021CH45      Phys.Rev. C 104, 024325 (2021)

R.J.Charity, T.B.Webb, J.M.Elson, D.E.M.Hoff, C.D.Pruitt, L.G.Sobotka, P.Navratil, G.Hupin, K.Kravvaris, S.Quaglioni, K.W.Brown, G.Cerizza, J.Estee, W.G.Lynch, J.Manfredi, P.Morfouace, C.Santamaria, S.Sweany, M.B.Tsang, T.Tsang, K.Zhu, S.A.Kuvin, D.McNeel, J.Smith, A.H.Wuosmaa, Z.Chajecki

Using spin alignment of inelastically excited nuclei in fast beams to assign spins: The spectroscopy of ¹³O as a test case

NUCLEAR REACTIONS ⁹Be(¹³O, ¹³O'), E=69.5 MeV/nucleon, [secondary ¹³O beam from ⁹Be(¹⁶O, X), E=150 MeV/nucleon primary reaction, followed by separation of fragments using A1900 fragment separator at NSCL-MSU facility]; measured charged particles, angular distribution of protons in 1p- and 2p-decays of the excited states of ¹³O using High Resolution Array (HiRA) of 14 ΔE-E (Si-CsI(Tl)) telescopes; deduced invariant-mass distributions of the p+¹²N and 2p+¹¹C events from the decay of ¹³O excited states. ¹³O; deduced levels, resonances, J, π, Γ, E(p), possibly rotational bands built on deformed cluster configurations predicted by antisymmetrized molecular dynamics (AMD) calculations. Comparison of p(θ) data with DWBA using FRESCO code, and level structure of ¹³O with ab initio no-core shell model with continuum (NCSMC), and with the structure of ¹³B mirror nucleus.

doi: 10.1103/PhysRevC.104.024325
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2021GA10      Phys.Rev. C 103, 024310 (2021)

F.H.Garcia, C.Andreoiu, G.C.Ball, N.Bernier, H.Bidaman, V.Bildstein, M.Bowry, D.S.Cross, M.R.Dunlop, R.Dunlop, A.B.Garnsworthy, P.E.Garrett, J.Henderson, J.Measures, B.Olaizola, K.Ortner, J.Park, C.M.Petrache, J.L.Pore, K.Raymond, J.K.Smith, D.Southall, C.E.Svensson, M.Ticu, J.Turko, K.Whitmore, T.Zidar, for the GRIFFIN Collaboration

Spectroscopic studies of neutron-rich ¹²⁹In and its β-decay daughter, ¹²⁹Sn, using the GRIFFIN spectrometer

RADIOACTIVITY ^129,129mIn(β^-)[from UC_x(p, F), E=480 MeV, followed by ionization and extraction of relevant isotopes using the Ion-Guide Laser Ion Source (IGLIS) and mass separation of ions of interest using high-resolution mass spectrometer at ISAC-TRIUMF]; measured Eγ, Iγ, β, βγ- and γγ-coin, half-lives of decays of ¹²⁹In g.s. and three isomers of ¹²⁹In using GRIFFIN array for γ detection, and SCEPTAR for β particles. ¹²⁹Sn; deduced levels, J, π, γ-branching ratios, β feedings, logft values from the decays of ¹²⁹In g.s., and three isomeric states of ¹²⁹In. ^129mIn; deduced β branching for the decay of (29/2+), 1911-keV isomer. Comparison with previous results from the ENSDF database.

doi: 10.1103/PhysRevC.103.024310
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2021GI14      Phys.Rev. C 104, 044313 (2021)

S.A.Gillespie, J.Henderson, K.Abrahams, F.A.Ali, L.Atar, G.C.Ball, N.Bernier, S.S.Bhattcharjee, R.Caballero-Folch, M.Bowry, A.Chester, R.Coleman, T.Drake, E.Dunling, A.B.Garnsworthy, B.Greaves, G.F.Grinyer, G.Hackman, E.Kasanda, R.LaFleur, S.Masango, D.Muecher, C.Ngwetsheni, S.S.Ntshangase, B.Olaizola, J.N.Orce, T.Rockman, Y.Saito, L.Sexton, P.Siuryte, J.Smallcombe, J.K.Smith, C.E.Svensson, E.Timakova, R.Wadsworth, J.Williams, M.S.C.Winokan, C.Y.Wu, T.Zidar

Coulomb excitation of ^{80, 82}Kr and a change in structure approaching N=Z=40

NUCLEAR REACTIONS ¹⁹⁶Pt, ²⁰⁸Pb(⁸⁰Kr, ⁸⁰Kr'), (⁸²Kr, ⁸²Kr'), E=4.17 MeV/nucleon from TRIUMF offline ion source (OLIS) and ISAC accelerator; measured Eγ, Iγ, (particle)γ-coin using TIGRESS array for γ rays, and double-sided silicon strip detectors for scattered beam- and target-like nuclei. ^80,82Kr; deduced levels, J, π, Coulomb-excitation yields, and analyzed using GOSIA coupled-channels code, E2 and M1 matrix elements, B(E2) and B(M1), and spectroscopic quadrupole moments for the first 2+ and 4+ states; analyzed rotational invariants, and covariances and correlations on matrix elements. Comparison with previous experimental data for E2 matrix element and B(E2) values. Systematics of B(E2) and quadrupole moments of ^{74,76,78,80,82,84}Kr, and those of cos(3δ) parameters for the first 2+ states in ^66,68,70,72Zn, ^{70,72,74,76,78}Ge, ^{72,74,76,78,80}Se, ^{74,76,78,80,82}Kr, ^{76,78,80,82,84}Sr, and compared with expected values for an axially symmetric rotor.

doi: 10.1103/PhysRevC.104.044313
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2021HE13      Eur.Phys.J. A 57, 132 (2021)

J.Heery, L.Barber, J.Vilhena, B.S.Nara Singh, R.-D.Herzberg, D.M.Cullen, C.Muller-Gatermann, G.Beeton, M.Bowry, A.Dewald, T.Grahn, P.T.Greenlees, A.Illana, R.Julin, S.Juutinen, J.M.Keatings, M.Leino, M.Luoma, D.O'Donnell, J.Ojala, J.Pakarinen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, J.Sinclair, J.F.Smith, J.Sorri, P.Spagnoletti, H.Tann, J.Uusitalo, G.Zimba

Lifetime measurements of yrast states in ¹⁷⁸Pt using the charge plunger method with a recoil separator

NUCLEAR REACTIONS ¹⁵²Sm(³²S, X)¹⁷⁸Pt, E=192 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, level lifetimes, quadrupole moments, B(E2). The differential decay curve method (DDCM) framework, JUROGAM3 spectrometer.

doi: 10.1140/epja/s10050-021-00425-8
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2021KA13      Phys.Rev. C 103, 024319 (2021)

B.P.Kay, J.P.Schiffer, S.J.Freeman, T.L.Tang, B.D.Cropper, T.Faestermann, R.Hertenberger, J.M.Keatings, P.T.MacGregor, J.F.Smith, H.-F.Wirth

Consistency of nucleon-transfer sum rules in well-deformed nuclei

NUCLEAR REACTIONS ^{154,156,157,158}Gd, ^{156,158,160,162,164}Dy, ^{168,170,172,174}Yb, ^{162,164,166,168,170}Er(d, p), (d, t), E=12.1 MeV; analyzed cross section data from neutron-adding and neutron-removing reactions from experiments at Niels Bohr Institute (NBI), and reported in 1966Bu16, 1967Tj01, 1969Tj01 and 1970Gr46, and complemented by new experiments at MLL-Munich; deduced consistent nucleon-transfer sum rules, as defined in Nilsson-model framework, in well-deformed nuclei.

NUCLEAR REACTIONS ¹⁷⁰Er, ¹⁷⁴Yb(d, p), (d, t), E=12 MeV; ¹⁷⁰Er, ¹⁷⁴Yb(p, d), E=18 MeV; measured proton, triton and deuteron spectra, differential σ(θ) using Q3D magnetic spectrometer at the MLL-Munich MP tandem accelerator. ^169,171Er, ^173,175Yb; deduced levels, J, π, Nilsson configurations, sum rules.

doi: 10.1103/PhysRevC.103.024319
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2021MC04      Phys.Rev. C 103, 064320 (2021)

D.G.McNeel, A.H.Wuosmaa, S.A.Kuvin, J.Smith, B.B.Back, J.Chen, C.R.Hoffman, B.P.Kay, G.L.Wilson, D.K.Sharp, R.M.Clark, H.L.Crawford, P.Fallon, A.O.Macchiavelli

Configuration mixing in ²⁸Mg and the ²⁶Mg(t, p)²⁸Mg

NUCLEAR REACTIONS ³H(²⁶Mg, p)²⁸Mg, E=160.6 MeV; ²H(²⁶Mg, p)²⁷Mg, E=160.6 MeV; measured reaction products, particle-identification spectra, E(p), I(p), σ(θ) using HELIOS magnetic spectrometer and auxiliary detectors at the ATLAS-ANL facility. ²⁸Mg; deduced levels, J, π, L-transfers; calculated levels, J, π, proton- and neutron-occupation numbers for selected states in ²⁸Mg using shell model with SDPF-MU interaction. DWBA analysis of σ(θ) distributions. Comparison with previous experimental data in the ENSDF database. ²H(²⁶Mg, p)²⁷Mg reaction used for energy-calibration and transport-efficiency information. Relevance to sd-fp cross-shell excitations between the valley of stability and the 'island of inversion'.

doi: 10.1103/PhysRevC.103.064320
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2641. Data from this article have been entered in the XUNDL database. For more information, click here.

2021ZH63      Phys.Rev. C 104, 064305 (2021)

W.Zhang, B.Cederwall, C.Qi, A.Ertoprak, O.Aktas, X.Liu, K.Andgren, K.Auranen, T.Back, L.Barber, G.Beeton, D.M.Cullen, I.G.Darby, M.R.Dimmock, S.Eeckhaudt, E.Ganioglu, M.Gorska, T.Grahn, P.T.Greenlees, B.Hadinia, E.Ideguchi, A.Illana, P.M.Jones, D.T.Joss, R.Julin, S.Juutinen, J.M.Keatings, A.Khaplanov, F.Kulali, M.Leino, M.Luoma, B.Lv, B.S.Nara Singh, L.Nelson, M.Niikura, M.Nyman, J.Ojala, R.D.Page, J.Pakarinen, E.S.Paul, C.Petrache, M.Petri, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.F.Smith, J.Sorri, H.Tann, G.Zimba, J.Uusitalo, R.Wadsworth, R.Wyss

Identification of excited states in ¹⁰⁷₅₂Te₅₅

NUCLEAR REACTIONS ⁵⁸Ni(⁵⁴Fe, 3n2p)¹⁰⁷Te, E=195 MeV; ⁵⁴Fe(⁵⁸Ni, 3n2p)¹⁰⁷Te, E=215 MeV; measured recoils, Eγ, Iγ, γγ-coin, (particle)γ-coin using EUROGAM array of 43 Compton-suppressed HPGe detectors and recoiling fusion evaporation products separated by RITU separator and implanted into two double-sided silicon strip detectors (DSSDs) of the GREAT spectrometer in ⁵⁸Ni(⁵⁴Fe, 3n2p) experiment, and using Jurogam III array of 15 Eurogam and 24 Euroball clover escape-suppressed Ge detectors, with evaporation products separated by MARA separator and implanted into the DSSD for the ⁵⁴Fe(⁵⁸Ni, 3n2p) experiment, both performed at the University of Jyvaskyla Accelerator Laboratory using recoil-decay tagging technique. ¹⁰⁷Te; deduced high-spin levels, J, π, νh_11/2 band. Comparison with large-scale shell-model calculations and total Routhian surface calculations. Systematics of νh_11/2 bands and level structures in ^{107,109,111,113,115,117,119}Te.

doi: 10.1103/PhysRevC.104.064305
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2020BA42      Nucl.Instrum.Methods Phys.Res. A979, 164454 (2020)

L.Barber, J.Heery, D.M.Cullen, B.S.Nara Singh, R.-D.Herzberg, C.Muller-Gatermann, G.Beeton, M.Bowry, A.Dewald, T.Grahn, P.T.Greenlees, A.Illana, R.Julin, S.Juutinen, J.M.Keatings, M.Luoma, D.O'Donnell, J.Ojala, J.Pakarinen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, J.Sinclair, J.F.Smith, J.Sorri, P.Spagnoletti, H.Tann, J.Uusitalo, J.Vilhena, G.Zimba

A charge plunger device to measure the lifetimes of excited nuclear states where transitions are dominated by internal conversion

NUCLEAR REACTIONS ¹⁵²Sm(³²S, 4n)¹⁸⁰Pt, E=165 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, 2⁺ state lifetime, B(E2). Charge plunger technique.

doi: 10.1016/j.nima.2020.164454
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2020BU01      Phys.Rev.Lett. 124, 042503 (2020)

P.A.Butler, L.P.Gaffney, P.Spagnoletti, K.Abrahams, M.Bowry, J.Cederkall, G.de Angelis, H.De Witte, P.E.Garrett, A.Goldkuhle, C.Henrich, A.Illana, K.Johnston, D.T.Joss, J.M.Keatings, N.A.Kelly, M.Komorowska, J.Konki, T.Kroll, M.Lozano, B.S.Nara Singh, D.O'Donnell, J.Ojala, R.D.Page, L.G.Pedersen, C.Raison, P.Reiter, J.A.Rodriguez, D.Rosiak, S.Rothe, M.Scheck, M.Seidlitz, T.M.Shneidman, B.Siebeck, J.Sinclair, J.F.Smith, M.Stryjczyk, P.Van Duppen, S.Vinals, V.Virtanen, N.Warr, K.Wrzosek-Lipska, M.Zielinska

Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive ²²²Ra and ²²⁸Ra Beams

NUCLEAR REACTIONS ⁶⁰Ni, ¹²⁰Sn(²²²Ra, ²²²Ra'), (²²⁸Ra, ²²⁸Ra'), E=4.31 MeV/nucleon; measured reaction products, Eγ, Iγ. ^222,228Ra; deduced γ-ray energies, dipole moments, quadrupole moments, E2 and E3 matrix elements, octupole collectivity.

doi: 10.1103/PhysRevLett.124.042503
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2020BU20      Nat. Commun. 11, 3560 (2020)

P.A.Butler, L.P.Gaffney, P.Spagnoletti, J.Konki, M.Scheck, J.F.Smith, K.Abrahams, M.Bowry, J.Cederkall, T.Chupp, G.de Angelis, H.De Witte, P.E.Garrett, A.Goldkuhle, C.Henrich, A.Illana, K.Johnston, D.T.Joss, J.M.Keatings, N.A.Kelly, M.Komorowska, T.Kroll, M.Lozano, B.S.Nara Singh, D.O'Donnell, J.Ojala, R.D.Page, L.G.Pedersen, C.Raison, P.Reiter, J.A.Rodriguez, D.Rosiak, S.Rothe, T.M.Shneidman, B.Siebeck, M.Seidlitz, J.Sinclair, M.Stryjczyk, P.Van Duppen, S.Vinals, V.Virtanen, N.Warr, K.Wrzosek-Lipska, M.Zielinska

Addendum: The observation of vibrating pear-shapes in radon nuclei

NUCLEAR REACTIONS ¹²⁰Sn(²²²Rn, ²²²Rn'), E=4.23 MeV/nucleon; ¹²⁰Sn(²²⁴Rn, ²²⁴Rn'), (²²⁶Rn, ²²⁶Rn'), E=5.08 MeV/nucleon; analyzed available data with updated computer codes. ^222,224,226Rn; deduced additional γ-ray energies for high-spin transitions, J, π, level schemes, octupole-vibrational bands. Comparison with systematics of radon isotopes. Root analysis files.

doi: 10.1038/s41467-020-17309-y
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2020CA01      Phys.Rev. C 101, 014313 (2020)

L.Capponi, J.F.Smith, P.Ruotsalainen, C.Scholey, P.Rahkila, L.Bianco, A.J.Boston, H.C.Boston, D.M.Cullen, X.Derkx, M.C.Drummond, T.Grahn, P.T.Greenlees, L.Grocutt, B.Hadinia, U.Jakobsson, D.T.Joss, R.Julin, S.Juutinen, M.Labiche, M.Leino, K.G.Leach, C.McPeake, K.F.Mulholland, P.Nieminen, D.O'Donnell, E.S.Paul, P.Peura, M.Sandzelius, J.Saren, B.Saygi, J.Sorri, S.Stolze, A.Thornthwaite, M.J.Taylor, J.Uusitalo

Delayed or absent π(h_11/2)² alignment in ¹¹¹Xe

NUCLEAR REACTIONS ⁵⁸Ni(⁵⁸Ni, nα)¹¹¹Xe, E=210 MeV; measured Eα, Eγ, Iγ, (evaporation residue)γ-coin, recoil-tagged γγ-coin, αα-correlations using the RITU separator, GREAT spectrometer, planar and Clover HPGe detectors at the K130 cyclotron of the University of Jyvaskyla. ¹¹¹Xe; deduced levels, J, π, h_11/2 band and its alignment, deformation parameters from total Routhian surface (TRS) calculations, configuration. Comparison with shell-model calculations. Systematics of h_11/2 bands in ^{111,113,115,117,119,121}Xe.

RADIOACTIVITY ¹¹¹Xe(α)[from ⁵⁸Ni(⁵⁸Ni, nα), E=210 MeV]; ¹⁰⁷Te(α)[from ¹¹¹Xe α decay]; measured Eα, Iα, αα correlations using recoil-decay tagging method.

doi: 10.1103/PhysRevC.101.014313
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2020KN04      Phys.Rev. C 102, 054322 (2020)

L.Knafla, P.Alexa, U.Koster, G.Thiamova, J.-M.Regis, J.Jolie, A.Blanc, A.M.Bruce, A.Esmaylzadeh, L.M.Fraile, G.de France, G.Hafner, S.Ilieva, M.Jentschel, V.Karayonchev, W.Korten, T.Kroll, S.Lalkovski, S.Leoni, H.Mach, N.Marginean, P.Mutti, G.Pascovici, V.Paziy, Zs.Podolyak, P.H.Regan, O.J.Roberts, N.Saed-Samii, G.S.Simpson, J.F.Smith, T.Soldner, C.Townsley, C.A.Ur, W.Urban, A.Vancraeyenest, N.Warr

Lifetime measurements in the odd-A nucleus ¹⁷⁷Hf

RADIOACTIVITY ^177mLu(β^-)[from thermal neutron activation of Lu(NO₃)₃ at the FRM2 reactor in Garching]; measured Eγ, Iγ, γγ-coin, half-lives of levels in ¹⁷⁷Hf by γγ(t) and generalized-centroid-difference (GCD) method using EXILL-FATIMA array of eight HPGe-Clover detectors and 16 fast-timing LaBr₃(Ce) detectors at ILL-Grenoble. ¹⁷⁷Hf; deduced levels, J, π, B(M1), B(E2), B(E1), configurations. Comparison to particle-rotor-model (PRM), and quasiparticle-phonon-model (QPM) calculations with multipole-multipole interactions. ¹⁷⁶Hf; calculated microscopic structure of the lowest 2-qp vibrational states.

doi: 10.1103/PhysRevC.102.054322
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2020MA59      Phys.Rev. C 102, 054325 (2020)

A.D.MacLean, A.T.Laffoley, C.E.Svensson, G.C.Ball, J.R.Leslie, C.Andreoiu, A.Babu, S.S.Bhattacharjee, H.Bidaman, V.Bildstein, C.Burbadge, M.Bowry, C.Cheng, D.S.Cross, A.Diaz Varela, I.Dillmann, M.R.Dunlop, R.Dunlop, L.J.Evitts, P.Finlay, S.Gillespie, A.B.Garnsworthy, P.E.Garrett, E.Gopaul, C.J.Griffin, G.F.Grinyer, G.Hackman, J.Henderson, B.Jigmeddorj, K.G.Leach, E.Kassanda, J.McAfee, M.Moukaddam, C.Natzke, S.Nittala, B.Olaizola, J.Park, C.Paxman, J.L.Pore, C.Porzio, A.J.Radich, P.Ruotsalainen, Y.Saito, S.Sharma, J.Smallcombe, J.K.Smith, R.Sultana, J.Turko, J.Williams, D.Yates, T.Zidar

High-precision branching ratio measurement and spin assignment implications for ⁶²Ga superallowed β decay

RADIOACTIVITY ⁶²Ga(β⁺), (EC); measured Eγ, Iγ, β⁺, β⁺γ- and βγγ-coin, γγ(θ) using GRIFFIN array of 16 Compton-suppressed HPGe clover detectors for γ rays, and SCEPTAR array of plastic scintillators for β particles at TRIUMF-ISAC facility. ⁶²Zn; deduced levels, J, π, multipole mixing ratios, precise β branch for superallowed 0⁺ to 0⁺ transition, β feedings to excited 0⁺ and (1+) states, isospin-symmetry-breaking correction. Comparison with previous experimental results and implications for theoretical studies of isospin-symmetry-breaking correction calculations.

doi: 10.1103/PhysRevC.102.054325
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2020OD01      J.Phys.(London) G47, 095103 (2020)

D.O'Donnell, R.D.Page, T.Grahn, F.A.Ali, K.Auranen, L .Capponi, R.J.Carroll, M.M.R.Chishti, M.C.Drummond, P.T.Greenlees, J.Henderson, A.Herzan, U.Jakobsson, D.T.Joss, R.Julin, S.Juutinen, J.Konki, M.Labiche, M.Leino, P.J.R.Mason, C.G.McPeake, J.Pakarinen, P.Papadakis, J.Partanen, P.Peura, P.Rahkila, J.Revill, P.Ruotsalainen, M.Sandzelius, J.Saren, B.Saygi, C.Scholey, J.Simpson, J.F.Smith, M.Smolen, J.Sorri, S.Stolze, C.M.Sullivan, A.Thornthwaite, J.Uusitalo, A.Kumar, P.C.Srivastava

High-spin states of ²¹⁸Th

NUCLEAR REACTIONS ¹⁷⁴Yb(⁴⁸Ca, 4n), E=207 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies and intensities, angular anisotropy ratios, J, π, level scheme, high-spin states. Comparison with theoretical calculations.

doi: 10.1088/1361-6471/aba16c
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2020OR05      Phys.Rev. C 102, 024323 (2020)

K.Ortner, C.Andreoiu, M.Spieker, G.C.Ball, N.Bernier, H.Bidaman, V.Bildstein, M.Bowry, D.S.Cross, M.R.Dunlop, R.Dunlop, F.H.Garcia, A.B.Garnsworthy, P.E.Garrett, J.Henderson, J.Measures, B.Olaizola, J.Park, C.M.Petrache, J.L.Pore, K.Raymond, J.K.Smith, D.Southall, C.E.Svensson, M.Ticu, J.Turko, K.Whitmore, T.Zidar

Collective 2p-2h intruder states in ¹¹⁸Sn studied via decay of ¹¹⁸In using the GRIFFIN spectrometer at TRIUMF

RADIOACTIVITY ^118mIn(β^-)[^118mIn beam from U(p, X), E=480 MeV, followed by selection of ions through Ion-Guide Laser Ion Source (IG-LIS) at TRIUMF-ISAC]; measured Eγ, Iγ, Eβ, βγ- and γγ-coin, γγ(θ) using GRIFFIN array for γ detection, and SCEPTAR array for β particles. ¹¹⁸Sn; deduced levels, J, π, γ-branching ratios, mixing ratios, B(E2), β feedings, logft. Comparison with sd IBM-2 theoretical calculations using the computer code NPBOS. Comparison with evaluated data in the ENSDF database. Systematics of B(E2) values for transitions from 2+ states in ^{112,114,116,118,120,122}Sn.

doi: 10.1103/PhysRevC.102.024323
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2020PA44      Phys.Rev. C 102, 054335 (2020)

E.Parr, J.F.Smith, P.T.Greenlees, K.Auranen, R.Chapman, D.M.Cullen, T.Grahn, L.Grocutt, A.Herzan, R.-D.Herzberg, D.Hodge, U.Jakobsson, R.Julin, S.Juutinen, J.Konki, C.McPeake, D.Mengoni, A.K.Mistry, K.F.Mulholland, G.G.O'Neill, J.Pakarinen, P.Papadakis, J.Partanen, P.Peura, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, M.Scheck, C.Scholey, M.Siciliano, M.Smolen, J.Sorri, S.Stolze, M.J.Taylor, J.Uusitalo

Excited states in ²¹⁷Ra populated in the α decay of ²²¹Th

RADIOACTIVITY ²²¹Th(α)[from ²⁰⁸Pb(¹⁸O, 5n), E=95 MeV at the University of Jyvaskyla Accelerator Laboratory]; measured Eα, Iα, Eγ, Iγ, αγ- and γγ-coin, ce, x rays, half-life of ²²¹Th decay using SAGE and GREAT spectrometers, the latter consisting of double-sided silicon-strip detectors (DSSDs), PIN-diode detectors, and Clover HPGe detectors. ²¹⁷Ra; deduced levels, J, π, conversion coefficients, multipolarities, α-branching ratios, α-hindrance factors, configurations. Comparison with previous experimental results, and with predictions of spherical shell and reflection-asymmetric models. Systematics of low-energy states in odd-A, N=129 isotones: ²¹¹Pb, ²¹³Po, ²¹⁵Rn, ²¹⁷Ra and ²¹⁹Th.

doi: 10.1103/PhysRevC.102.054335
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2020PR14      Phys.Lett. B 811, 135941 (2020)

E.Prasad, D.J.Hinde, M.Dasgupta, D.Y.Jeung, A.C.Berriman, B.M.A.Swinton-Bland, C.Simenel, E.C.Simpson, R.Bernard, E.Williams, K.J.Cook, D.C.Rafferty, C.Sengupta, J.F.Smith, K.Vo-Phuoc, J.Walshe

Systematics of the mass-asymmetric fission of excited nuclei from ¹⁷⁶Os to ²⁰⁶Pb

NUCLEAR REACTIONS ¹⁷⁶Os, ^176,180Pt, ^192,198Hg, ²⁰⁶Pb(p, F), (¹²C, F), (³²S, F), (⁴⁰Ca, F), (⁴⁸Ca, F), E not given; analyzed available data; deduced mass-asymmetric fission systematics, total kinetic energy distributions, fission mass-ratio distributions. Comparison with GEF calculations.

doi: 10.1016/j.physletb.2020.135941
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2020RA24      Phys.Rev.Lett. 125, 202701 (2020)

J.S.Randhawa, Y.Ayyad, W.Mittig, Z.Meisel, T.Ahn, S.Aguilar, H.Alvarez-Pol, D.W.Bardayan, D.Bazin, S.Beceiro Novo, D.Blankstein, L.Carpenter, M.Cortesi, D.Cortina-Gil, P.Gastis, M.Hall, S.Henderson, J.J.Kolata, T.Mijatovic, F.Ndayisabye, P.O'Malley, J.Pereira, A.Pierre, H.Robert, C.Santamaria, H.Schatz, J.Smith, N.Watwood, J.C.Zamora

First Direct Measurement of ²²Mg(α, p)²⁵Al and Implications for X-Ray Burst Model-Observation Comparisons

NUCLEAR REACTIONS ⁴He(²²Mg, p), E ∼ 5 MeV/nucleon; measured reaction products, Ep, Ip; deduced σ, reaction rates. Comparison with Non-Smoker calculations, available data.

doi: 10.1103/PhysRevLett.125.202701
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2584.

2020SM02      Phys.Rev. C 102, 054314 (2020)

J.K.Smith, A.B.Garnsworthy, J.L.Pore, C.Andreoiu, A.D.MacLean, A.Chester, Z.Beadle, G.C.Ball, P.C.Bender, V.Bildstein, R.Braid, A.Diaz Varela, R.Dunlop, L.J.Evitts, P.E.Garrett, G.Hackman, S.V.Ilyushkin, B.Jigmeddorj, K.Kuhn, A.T.Laffoley, K.G.Leach, D.Miller, W.J.Mills, W.Moore, M.Moukaddam, B.Olaizola, E.E.Peters, A.J.Radich, E.T.Rand, F.Sarazin, C.E.Svensson, S.J.Williams, S.W.Yates

Spectroscopic study of ⁴⁷Ca from the β^- decay of ⁴⁷K

RADIOACTIVITY ⁴⁷K(β^-)[from U(p, X), E=500 MeV at the TRIUMF Cyclotron, followed by extraction of surface-ionized ⁴⁷K ions, accelerated to 28 keV, passed through a high-resolution mass separator, and deposited on a mylar tape for counting]; measured Eγ, Iγ, Eβ, ce, γγ-coin, γγ(θ) using GRIFFIN array of 16 clover Ge detectors, plastic scintillators for β particles, and Si(Li) detectors for conversion electrons. ⁴⁷Ca; deduced levels, J, π, multipolarities and mixing ratios, β feedings, logft, γ-branching ratios, B(GT). Comparison with previous results.

doi: 10.1103/PhysRevC.102.054314
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2020TA03      Phys.Rev.Lett. 124, 062502 (2020)

T.L.Tang, B.P.Kay, C.R.Hoffman, J.P.Schiffer, D.K.Sharp, L.P.Gaffney, S.J.Freeman, M.R.Mumpower, A.Arokiaraj, E.F.Baader, P.A.Butler, W.N.Catford, G.de Angelis, F.Flavigny, M.D.Gott, E.T.Gregor, J.Konki, M.Labiche, I.H.Lazarus, P.T.MacGregor, I.Martel, R.D.Page, Zs.Podolyak, O.Poleshchuk, R.Raabe, F.Recchia, J.F.Smith, S.V.Szwec, J.Yang

First Exploration of Neutron Shell Structure below Lead and beyond N=126

NUCLEAR REACTIONS ²H(²⁰⁶Hg, p), E=7.38 MeV/nucleon; measured reaction products, Ep, Ip. ²⁰⁷Hg; deduced excitation energies, J, π, σ(θ). Comparison with theoretical calculations.

doi: 10.1103/physrevlett.124.062502
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2020WE08      Phys.Rev. C 101, 044317 (2020)

T.B.Webb, R.J.Charity, J.M.Elson, D.E.M.Hoff, C.D.Pruitt, L.G.Sobotka, K.W.Brown, J.Barney, G.Cerizza, J.Estee, W.G.Lynch, J.Manfredi, P.Morfouace, C.Santamaria, S.Sweany, M.B.Tsang, T.Tsang, Y.Zhang, K.Zhu, S.A.Kuvin, D.McNeel, J.Smith, A.H.Wuosmaa, Z.Chajecki

Invariant-mass spectrum of ¹¹O

NUCLEAR REACTIONS ⁹Be(¹³O, ¹¹O), E=69.5 MeV/nucleon; measured Ep, Ip, and invariant mass spectrum of ¹¹O fragments from (⁹C)2p-coin events with two-proton emission from two states in ¹¹O, longitudinal-momentum distributions using the HiRA array at NSCL-MSU facility. ¹¹O; deduced levels, S(2p) for ground state.

doi: 10.1103/PhysRevC.101.044317
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2020WH02      Phys.Rev. C 102, 024327 (2020)

K.Whitmore, C.Andreoiu, F.H.Garcia, K.Ortner, J.D.Holt, T.Miyagi, G.C.Ball, N.Bernier, H.Bidaman, V.Bildstein, M.Bowry, D.S.Cross, M.R.Dunlop, R.Dunlop, A.B.Garnsworthy, P.E.Garrett, J.Henderson, J.Measures, B.Olaizola, J.Park, C.M.Petrache, J.L.Pore, J.K.Smith, D.Southall, C.E.Svensson, M.Ticu, J.Turko, T.Zidar

β decay of ¹³²In and spectroscopy of ¹³²Sn and ¹³¹Sb with the GRIFFIN spectrometer

RADIOACTIVITY ¹³²In(β^-), (β^-n)[¹³²In beam from U(p, X), E=480 MeV, followed by selection of ions through Ion-Guide Laser Ion Source (IG-LIS) at TRIUMF-ISAC]; ^131mSn(β^-)[from ¹³²In β^-n decay]; measured Eγ, Iγ, Eβ, βγ- and γγ-coin, γγ(θ), half-life of ¹³²In decay using GRIFFIN array for γ detection, and SCEPTAR array for β particles. ¹³²In; deduced beta-delayed neutron emission probability or P_n for decay of ¹³²In from total number of decays and γ intensities. ¹³¹Sb, ¹³²Sn; deduced levels, J, π, γ-branching ratios, mixing ratio for a transition in ¹³²Sn, β feedings and logft values for levels in ¹³²Sn. Comparison with VS-IMSRG theoretical calculations for positive-parity states in ¹³²Sn. Comparison with evaluated data in the ENSDF database.

doi: 10.1103/PhysRevC.102.024327
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2019BA26      Phys.Rev.Lett. 122, 232503 (2019)

K.Banerjee, D.J.Hinde, M.Dasgupta, E.C.Simpson, D.Y.Jeung, C.Simenel, B.M.A.Swinton-Bland, E.Williams, I.P.Carter, K.J.Cook, H.M.David, C.E.Dullmann, J.Khuyagbaatar, B.Kindler, B.Lommel, E.Prasad, C.Sengupta, J.F.Smith, K.Vo-Phuoc, J.Walshe, A.Yakushev

Mechanisms Suppressing Superheavy Element Yields in Cold Fusion Reactions

NUCLEAR REACTIONS ²⁰⁸Pb(⁵⁰Ti, X), (⁴⁸Ca, X), (⁵⁴Cr, X), E not given; analyzed available data; deduced projectile impact on drastic fall in the symmetric fission yield, which is reflected in the measured mass-angle distribution by the presence of competing fast nonequilibrium deep inelastic and quasifission processes.

doi: 10.1103/PhysRevLett.122.232503
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2019BU29      Nat. Commun. 10, 2473 (2019)

P.A.Butler, L.P.Gaffney, P.Spagnoletti, J.Konki, M.Scheck, J.F.Smith, K.Abrahams, M.Bowry, J.Cederkall, T.Chupp, G.de Angelis, H.De Witte, P.E.Garrett, A.Goldkuhle, C.Henrich, A.Illana, K.Johnston, D.T.Joss, J.M.Keatings, N.A.Kelly, M.Komorowska, T.Kroll, M.Lozano, B.S.Nara Singh, D.O'Donnell, J.Ojala, R.D.Page, L.G.Pedersen, C.Raison, P.Reiter, J.A.Rodriguez, D.Rosiak, S.Rothe, T.M.Shneidman, B.Siebeck, M.Seidlitz, J.Sinclair, M.Stryjczyk, P.Van Duppen, S.Vinals, V.Virtanen, N.Warr, K.Wrzosek-Lipska, M.Zielinska

The observation of vibrating pear-shapes in radon nuclei

NUCLEAR REACTIONS ¹²⁰Sn(²²²Rn, ²²²Rn'), E=4.23 MeV/nucleon; ¹²⁰Sn(²²⁴Rn, ²²⁴Rn'), (²²⁶Rn, ²²⁶Rn'), E=5.08 MeV/nucleon; measured reaction products, Eγ, Iγ, γ-γ-coin., X-rays. ^222,224,226Rn; deduced γ-ray energies, J, π, level schemes, octupole-vibrational bands, high-spin transitions. Comparison with systematics of radon isotopes. HIE-ISOLDE accelerator, Miniball spectrometer.

doi: 10.1038/s41467-019-10494-5
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2019DU12      Phys.Rev. C 99, 045805 (2019)

R.Dunlop, C.E.Svensson, C.Andreoiu, G.C.Ball, N.Bernier, H.Bidaman, V.Bildstein, M.Bowry, D.S.Cross, I.Dillmann, M.R.Dunlop, F.H.Garcia, A.B.Garnsworthy, P.E.Garrett, G.Hackman, J.Henderson, J.Measures, D.Mucher, B.Olaizola, K.Ortner, J.Park, C.M.Petrache, J.L.Pore, J.K.Smith, D.Southall, M.Ticu, J.Turko, K.Whitmore, T.Zidar

β decay and β-delayed neutron decay of the N=82 nucleus ¹³¹₄₉In₈₂

RADIOACTIVITY ¹³¹In(β^-), (β^-n)[from U(p, F), E=480 MeV]; measured Eγ, Iγ, Iβ^-, γγ-, βγ-, and βγγ-coin, half-lives of 9/2+ ground state, 1/2- and 21/2+ isomers in ¹³¹In, and those of 10+ isomer in ¹³⁰Sn, and (23/2-) isomer in ¹³¹Sn using the GRIFFIN array for γ detection and the SCEPTAR array for β detection at TRIUMF-ISAC facility. ^130,131Sn, ¹³⁰Sb; deduced levels, J, π, conversion coefficient, multipolarity, configurations, β feedings, delayed-neutron emission probabilities P_n for 21/2+ isomer, and combined P_n for 1/2- isomer and 9/2+ g.s. for the decays of ¹³¹In activities. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.99.045805
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2019GR06      J.Phys.(London) G46, 075101 (2019)

E.T.Gregor, N.N.Arsenyev, M.Scheck, T.M.Shneidman, M.Thurauf, C.Bernards, A.Blanc, R.Chapman, F.Drouet, A.A.Dzhioev, G.de France, M.Jentschel, J.Jolie, J.M.Keatings, T.Kroll, U.Koster, R.Leguillon, K.R.Mashtakov, P.Mutti, D.O'Donnell, C.M.Petrache, G.S.Simpson, J.Sinclair, J.F.Smith, T.Soldner, P.Spagnoletti, A.V.Sushkov, W.Urban, A.Vancraeyenest, J.R.Vanhoy, V.Werner, K.O.Zell, M.Zielinska

Decay properties of the 3^-₁ level in ⁹⁶Mo

NUCLEAR REACTIONS ⁹⁵Mo(n, 2γ), E cold; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced γ-ray energies and intensities, B(Eλ). Comparison with QRPA results.

NUCLEAR STRUCTURE ^92,94,96,98Mo; calculated energy levels, B(Eλ) using QRPA approach.

doi: 10.1088/1361-6471/ab0b5e
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2019GR08      Phys.Rev. C 100, 064308 (2019)

L.Grocutt, R.Chapman, M.Bouhelal, F.Haas, A.Goasduff, J.F.Smith, S.Courtin, D.Bazzacco, T.Braunroth, L.Capponi, L.Corradi, X.Derkx, P.Desesquelles, M.Doncel, E.Fioretto, A.Gottardo, V.Liberati, B.Melon, D.Mengoni, C.Michelagnoli, T.Mijatovic, V.Modamio, G.Montagnoli, D.Montanari, K.F.Mulholland, D.R.Napoli, C.Petrache, A.Pipidis, F.Recchia, E.Sahin, P.P.Singh, A.M.Stefanini, S.Szilner, J.J.Valiente-Dobon

Lifetime measurements of N ≈ 20 phosphorus isotopes using the AGATA γ-ray tracking spectrometer

NUCLEAR REACTIONS ²⁰⁸Pb(³⁶S, X)³³P/³⁴P/³⁵P/³⁶P/³⁷P, E=225 MeV; measured yields of reaction products, Eγ, Iγ, γγ- and (particle)γ-coin, level half-lives by differential recoil-distance method using a plunger device, Prisma magnetic spectrometer for particles, and AGATA array for γ rays at the INFN-LNL-Legnaro facility. ^33,34,35,36P; deduced levels, J, π, configurations, B(M1), B(E2), B(E1). Comparison with previous experimental data, and with the state-of-the-art shell-model calculations using PSDPF effective interaction.

doi: 10.1103/PhysRevC.100.064308
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2019MA29      Phys.Rev. C 99, 044320 (2019)

A.Matta, W.N.Catford, N.A.Orr, J.Henderson, P.Ruotsalainen, G.Hackman, A.B.Garnsworthy, F.Delaunay, R.Wilkinson, G.Lotay, Na.Tsunoda, T.Otsuka, A.J.Knapton, G.C.Ball, N.Bernier, C.Burbadge, A.Chester, D.S.Cross, S.Cruz, C.Aa.Diget, T.Domingo, T.E.Drake, L.J.Evitts, F.H.Garcia, S.Hallam, E.MacConnachie, M.Moukaddam, D.Muecher, E.Padilla-Rodal, O.Paetkau, J.Park, J.L.Pore, U.Rizwan, J.Smallcombe, J.K.Smith, K.Starosta, C.E.Svensson, J.Williams, M.Williams

Shell evolution approaching the N-20 island of inversion: Structure of ²⁹Mg

NUCLEAR REACTIONS ²H(²⁸Mg, p), E=8.0 MeV/nucleon, [secondary ²⁸Mg beam from C(p, X), E=520 MeV primary reaction at the ISAC2 of TRIUMF]; measured Ep, Ip, Eγ, Iγ, (recoil)γ-coin, and differential σ(θ) using SHARC array of double-sided silicon strip detectors, TIGRESS array of HPGe detectors, and TRIFOIL plastic scintillator. ²⁹Mg; deduced levels, J, π, spectroscopic factors. Comparison with shell model calculations. Systematics of intruder states in ^25,27,29,31Mg.

NUCLEAR STRUCTURE ²⁹Mg; calculated levels, J, π, neutron occupancies using shell model with EEdf1 interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.99.044320
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2019PA27      Phys.Rev. C 99, 054307 (2019)

E.Parr, R.D.Page, D.T.Joss, F.A.Ali, K.Auranen, L.Capponi, T.Grahn, P.T.Greenlees, J.Henderson, A.Herzan, U.Jakobsson, R.Julin, S.Juutinen, J.Konki, M.Labiche, M.Leino, P.J.R.Mason, C.McPeake, D.O'Donnell, J.Pakarinen, P.Papadakis, J.Partanen, P.Peura, P.Rahkila, J.P.Revill, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Simpson, J.F.Smith, M.Smolen, J.Sorri, S.Stolze, A.Thornthwaite, J.Uusitalo

Fine structure in the α decay of ¹⁵⁶Lu and ¹⁵⁸Ta

RADIOACTIVITY ^156mLu, ^158mTa(α)[from ¹⁰⁶Cd(⁵⁸Ni, X), E=318 MeV using RITU separator and GREAT spectrometer at the accelerator laboratory of the University of Jyvaskyla]; measured Eα, Iα, Eγ, Iγ, αγ-coin using HPGe and planar Ge strip detectors for γ detection, and double-sided silicon strip detectors and silicon PIN diode detectors for α detection; deduced fine structure in the α decay of high-spin isomers in ¹⁵⁶Lu and ¹⁵⁸Ta. ¹⁵²Tm, ¹⁵⁴Lu; deduced levels, J, π, α-branching ratios, α-reduced decay widths, and α-hindrance factors, configurations. ^152mHo, ^154mTm, ^156mLu, ^158mTa(α); systematics of α-decay hindrance factors, and excitation energies, Jπ values and configurations in daughter nuclides of ¹⁴⁸Tb, ¹⁵⁰Ho, ¹⁵²Tm, ¹⁵⁴Lu. ¹⁵²Er, ¹⁵³Tm, ^154,155Yb, ¹⁵⁵Lu, ^157,158Hf, ¹⁵⁷Ta, ^159,160W(α); measured (ER)α correlated spectra.

doi: 10.1103/PhysRevC.99.054307
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2019PA45      Phys.Rev. C 100, 044323 (2019)

E.Parr, J.F.Smith, P.T.Greenlees, K.Auranen, P.A.Butler, R.Chapman, D.M.Cox, D.M.Cullen, L.P.Gaffney, T.Grahn, E.T.Gregor, L.Grocutt, A.Herzan, R.-D.Herzberg, D.Hodge, U.Jakobsson, R.Julin, S.Juutinen, J.Keatings, J.Konki, M.Leino, P.P.McKee, C.McPeake, D.Mengoni, A.K.Mistry, K.F.Mulholland, B.S.Nara Singh, G.G.O'Neill, J.Pakarinen, P.Papadakis, J.Partanen, P.Peura, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, M.Scheck, C.Scholey, M.Siciliano, M.Smolen, J.Sorri, P.Spagnoletti, K.M.Spohr, S.Stolze, M.J.Taylor, J.Uusitalo

α-decay spectroscopy of the N=130 isotones ²¹⁸Ra and ²²⁰Th: Mitigation of α-particle energy summing with implanted nuclei

RADIOACTIVITY ²¹⁸Ra(α)[from α-decay of ²²²Th formed in ²⁰⁸Pb(¹⁸O, 4n), E=95 MeV]; ²¹⁴Rn(α)[from α-decay of ²¹⁸Ra]; ²²⁰Th(α)[from α-decay of ²²⁴U formed in ²⁰⁸Pb(²⁰Ne, 4n), E=109 MeV]; ²¹⁶Ra(α)[from α-decay of ²²⁰Th]; measured recoiling evaporation residues using RITU gas-filled recoil separator, Eα, Iα, Eγ, Iγ, αγ-coin, half-lives of decays of ²¹⁸Ra, ²¹⁴Rn, ²²⁰Th and ²¹⁶Ra, α-branching ratio for decay to the g.s. and the first 2+ level in ²¹⁴Rn using the GREAT spectrometer at Jyvaskyla accelerator facility; data analyzed using a newly developed technique to mitigate energy summing due to sequential short-lived α decays from nuclei implanted into a silicon detector. ²¹⁴Rn; deduced 2+ level, α-hindrance factor. Comparison with previous experimental data.

doi: 10.1103/PhysRevC.100.044323
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2019PO06      Phys.Rev. C 100, 054327 (2019)

J.L.Pore, C.Andreoiu, J.K.Smith, A.D.MacLean, A.Chester, J.D.Holt, G.C.Ball, P.C.Bender, V.Bildstein, R.Braid, A.Diaz Varela, R.Dunlop, L.J.Evitts, A.B.Garnsworthy, P.E.Garrett, G.Hackman, S.V.Ilyushkin, B.Jigmeddorj, K.Kuhn, P.Kunz, A.T.Laffoley, K.G.Leach, D.Miller, W.J.Mills, W.Moore, M.Moukaddam, L.N.Morrison, B.Olaizola, E.E.Peters, A.J.Radich, E.T.Rand, F.Sarazin, D.Southall, C.E.Svensson, S.J.Williams, S.W.Yates

Detailed spectroscopy of ⁴⁶Ca: A study of the β^- decay of ⁴⁶K

RADIOACTIVITY ⁴⁶K(β^-)[from U(p, X), E=500 MeV]; measured Eγ, Iγ, γγ-coin, γγ(θ), ce, β particles using GRIFFIN array of 15 HPGe detectors for γ detection, PACES array of five Si(Li) detectors for conversion electrons, and SCEPTAR array of 10 plastic scintillators for β-particle tagging, half-life of ⁴⁶K decay at TRIUMF-ISAC facility. ⁴⁶Ca; deduced levels, J, π, β feedings, logft, γ-branching ratios, multipole mixing ratios. Comparison of level structure with theoretical predictions from microscopic valence space Hamiltonians derived from NN+3N forces.

doi: 10.1103/PhysRevC.100.054327
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2019RU02      Phys.Rev. C 99, 051301 (2019)

P.Ruotsalainen, J.Henderson, G.Hackman, G.H.Sargsyan, K.D.Launey, A.Saxena, P.C.Srivastava, S.R.Stroberg, T.Grahn, J.Pakarinen, G.C.Ball, R.Julin, P.T.Greenlees, J.Smallcombe, C.Andreoiu, N.Bernier, M.Bowry, M.Buckner, R.Caballero-Folch, A.Chester, S.Cruz, L.J.Evitts, R.Frederick, A.B.Garnsworthy, M.Holl, A.Kurkjian, D.Kisliuk, K.G.Leach, E.McGee, J.Measures, D.Mucher, J.Park, F.Sarazin, J.K.Smith, D.Southall, K.Starosta, C.E.Svensson, K.Whitmore, M.Williams, C.Y.Wu

Isospin symmetry in B(E2) values: Coulomb excitation study of ²¹Mg

NUCLEAR REACTIONS ¹⁹⁶Pt(²¹Mg, ²¹Mg'), E=95 MeV; ¹¹⁰Pd(²¹Mg, ²¹Mg'), E=67 MeV; measured Eγ, Iγ, (particle)γ-coin, Coulomb excitation yields, half-life of the 1/2+ state in ²¹Mg using BAMBINO array for particle detection, and TIGRESS array for γ rays from Coulomb excited ²¹Mg states at TRIUMF-ISAC-II facility. ²¹Mg; deduced levels, J, π, Coulomb-excitation yields, E2 matrix elements, B(E2). GOSIA least-squares fit analysis. Systematics of 5/2+ to 1/2+ B(E2) values in T=-3/2 and +3/2 mirror nuclei: ²¹Mg, ²¹Fl; ²⁵Si, ²⁵Na; ²⁹S, ²⁹Al; ³³Ar, ³³P; ³⁷Ca, ³⁷Cl. Comparison with shell-model calculations with isospin conserving and breaking USD interactions, and using modern ab initio approach.

doi: 10.1103/PhysRevC.99.051301
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2019SM03      Nucl.Instrum.Methods Phys.Res. A922, 47 (2019)

J.K.Smith, A.D.MacLean, W.Ashfield, A.Chester, A.B.Garnsworthy, C.E.Svensson

Gamma-gamma angular correlation analysis techniques with the GRIFFIN spectrometer

RADIOACTIVITY ⁶⁰Co(β^-), ⁶⁶Ga(EC), ¹⁵²Eu(β^-), (EC); measured decay products, Eγ, Iγ, γ-γ-coin.; deduced γ-ray energies, J, π, mixing ratios. Comparison with GEANT4 simulations.

doi: 10.1016/j.nima.2018.10.097
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2019SP03      Phys.Rev. C 100, 014311 (2019)

P.Spagnoletti, G.Simpson, S.Kisyov, D.Bucurescu, J.-M.Regis, N.Saed-Samii, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.de France, C.A.Ur, W.Urban, A.M.Bruce, C.Bernards, F.Drouet, L.M.Fraile, L.P.Gaffney, D.G.Ghita, S.Ilieva, J.Jolie, W.Korten, T.Kroll, S.Lalkovski, C.Larijarni, R.Lica, H.Mach, N.Marginean, V.Paziy, Zs.Podolyak, P.H.Regan, M.Scheck, J.F.Smith, G.Thiamova, C.Townsley, A.Vancraeyenest, V.Vedia, N.Warr, V.Werner, M.Zielinska

Lifetimes and shape-coexisting states of ⁹⁹Zr

NUCLEAR REACTIONS ²³⁵U(n, F), E=cold neutrons from high-flux reactor of the Institut Laue-Langevin; measured Eγ, Iγ, level half-lives by γγ(t) using EXILL-FATIMA Ge and LaBr₃(Ce) detector array for fast-timing technique. ⁹⁹Zr; deduced levels, J, π, B(E2), B(M1), Q(transition), β₂, configuration, kinematic moment of inertia for ν3/2[451] band. Systematics of kinematic moments of inertia of ν3/2[411] bands in ^99,101,103Zr, ⁹⁷Sr. Comparison with theoretical calculations using IBFM-1 model, and with previous experimental results.

doi: 10.1103/PhysRevC.100.014311
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2019TH01      Phys.Rev. C 99, 011304 (2019)

M.Thurauf, Ch.Stoyanov, M.Scheck, M.Jentschel, C.Bernards, A.Blanc, N.Cooper, G.De France, E.T.Gregor, C.Henrich, S.F.Hicks, J.Jolie, O.Kaleja, U.Koster, T.Kroll, R.Leguillon, P.Mutti, D.O'Donnell, C.M.Petrache, G.S.Simpson, J.F.Smith, T.Soldner, M.Tezgel, W.Urban, J.Vanhoy, M.Werner, V.Werner, K.O.Zell, T.Zerrouki

Low-lying octupole isovector excitation in ¹⁴⁴Nd

NUCLEAR REACTIONS ¹⁴³Nd(n, γ), E=cold; measured Eγ, Iγ, γγ-coin, γγ(θ), half-lives of 3- states by Doppler-shift technique (GRID) using EXILL array for γ detection at the Institut Laue-Langevin, Grenoble. ¹⁴⁴Nd; deduced low-lying 3- levels, multipolarities, mixing ratios, B(M1), B(E2), B(E3). Comparison with quasiparticle phonon model (QPM) calculations.

doi: 10.1103/PhysRevC.99.011304
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2019TO10      Eur.Phys.J. A 55, 158 (2019)

D.A.Torres, R.Chapman, V.Kumar, B.Hadinia, A.Hodsdon, M.Labiche, X.Liang, D.O'Donnell, J.Ollier, R.Orlandi, J.F.Smith, K.-M.Spohr, P.Wady, Z.M.Wang, L.Corradi, E.Fioretto, A.Gadea, G.de Angelis, N.Marginean, D.R.Napoli, E.Sahin, A.M.Stefanini, J.J.Valiente-Dobon, F.D.Vedova, M.Axiotis, T.Martinez, S.Szilner, D.Bazzacco, S.Beghini, E.Farnea, R.Marginean, D.Mengoni, G.Montagnoli, F.Recchia, F.Scarlassara, C.A.Ur, S.M.Lenzi, S.Lunardi, T.Kroll, F.Haas, T.Faul, M.Hjorth-Jensen, B.G.Carlsson, S.J.Freeman, A.G.Smith, G.Jones, N.Thompson, G.Pollarolo, G.S.Simpson

Study of medium-spin states of neutron-rich ^{87, 89, 91}Rb isotopes

NUCLEAR REACTIONS ¹²⁴Sn(⁹⁶Zr, f), (⁹⁶Zr, x)^87,89,91Rb, E=530 MeV; measured Eγ, Iγ of fission fragments γ-ray decay; ¹⁷⁶Yb(³⁶S, x), (³⁶S, f)^87,89,91Rb, E=230 MeV; measured thick target Eγ, Iγ of fission fragments γ-ray decay. ^87,89,91Rb; deduced γ-ray energy spectrum, new scheme of levels, Jπ, (up to 6423 keV (27/2)⁺ state), γ-ray transitions; calculated multipolarities, energy differences between (5/2)^- and (3/2)^- states for odd-A Rb isotopes using spherical shell-model and cranked Nilsson-Strutinsky-Bogoliubov approach.

doi: 10.1140/epja/i2019-12839-6
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2019WE03      Phys.Rev.Lett. 122, 122501 (2019)

T.B.Webb, S.M.Wang, K.W.Brown, R.J.Charity, J.M.Elson, J.Barney, G.Cerizza, Z.Chajecki, J.Estee, D.E.M.Hoff, S.A.Kuvin, W.G.Lynch, J.Manfredi, D.McNeel, P.Morfouace, W.Nazarewicz, C.D.Pruitt, C.Santamaria, J.Smith, L.G.Sobotka, S.Sweany, C.Y.Tsang, M.B.Tsang, A.H.Wuosmaa, Y.Zhang, K.Zhu

first Observation of Unbound ¹¹O, the Mirror of the Halo Nucleus ¹¹Li

RADIOACTIVITY ^11,12O(2p) [from ⁹Be(¹³O, xn)¹¹O/¹²O, E<69.5 MeV/nucleon]; measured decay products, Ep, Ip; deduced an invariant-mass spectrum, resonant state widths, two-nucleon density distributions. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.122.122501
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2019WE11      Phys.Rev. C 100, 024306 (2019); Erratum Phys.Rev. C 102, 019904 (2020)

T.B.Webb, R.J.Charity, J.M.Elson, D.E.M.Hoff, C.D.Pruitt, L.G.Sobotka, K.W.Brown, J.Barney, G.Cerizza, J.Estee, G.Jhang, W.G.Lynch, J.Manfredi, P.Morfouace, C.Santamaria, S.Sweany, M.B.Tsang, T.Tsang, S.M.Wang, Y.Zhang, K.Zhu, S.A.Kuvin, D.McNeel, J.Smith, A.H.Wuosmaa, Z.Chajecki

Particle decays of levels in ^{11, 12}N and ¹²O investigated with the invariant-mass method

NUCLEAR REACTIONS ⁹Be(¹³O, ¹²O), (¹³O, ¹²N), (¹³O, ¹¹N), E=69.5 MeV/nucleon, [secondary ¹³O beam from ⁹Be(¹⁶O, ¹²O), E=150 MeV/nucleon primary reaction, followed by separation of ion beam using A1900 magnetic separator]; measured charged particles, (particle)(particle)-coin, cross sections using the High Resolution Array (HiRA) of 14 ΔE-E Si-CsI(Tl) telescopes at NSCL, MSU facility. ^12,13O, ¹²N; deduced levels, J, π, 2p-, 3p-, 1p- and 2p+α-decay branches, p+¹⁰C, p+¹¹C, 2p+¹⁰C invariance mass spectra, widths, total decay energy spectrum and invariant-mass spectra from coincident 4p+2α events. Comparison with Gamow coupled-channel (GCC) calculations, and with previous experimental data in the ENSDF database.

doi: 10.1103/PhysRevC.100.024306
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2019WR01      Eur.Phys.J. A 55, 130 (2019)

K.Wrzosek-Lipska, K.Rezynkina, N.Bree, M.Zielinska, L.P.Gaffney, A.Petts, A.Andreyev, B.Bastin, M.Bender, A.Blazhev, B.Bruyneel, P.A.Butler, M.P.Carpenter, J.Cederkall, E.Clement, T.E.Cocolios, A.N.Deacon, J.Diriken, A.Ekstrom, C.Fitzpatrick, L.M.Fraile, Ch.Fransen, S.J.Freeman, J.E.Garcia-Ramos, K.Geibel, R.Gernhauser, T.Grahn, M.Guttormsen, B.Hadinia, K.Hadynska-Klek, M.Hass, P.-H.Heenen, R.-D.Herzberg, H.Hess, K.Heyde, M.Huyse, O.Ivanov, D.G.Jenkins, R.Julin, N.Kesteloot, Th.Kroll, R.Krucken, A.C.Larsen, R.Lutter, P.Marley, P.J.Napiorkowski, R.Orlandi, R.D.Page, J.Pakarinen, N.Patronis, P.J.Peura, E.Piselli, L.Prochniak, P.Rahkila, E.Rapisarda, P.Reiter, A.P.Robinson, M.Scheck, S.Siem, K.Singh Chakkal, J.F.Smith, J.Srebrny, I.Stefanescu, G.M.Tveten, P.Van Duppen, J.Van de Walle, D.Voulot, N.Warr, A.Wiens, J.L.Wood

Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of ¹⁸²Hg, ¹⁸⁴Hg, ¹⁸⁶Hg and ¹⁸⁸Hg

NUCLEAR REACTIONS ¹¹²Cd(¹⁸²Hg, ¹⁸²Hg'), E=519 MeV; ¹²⁰Sn, ¹⁰⁷Ag, ¹¹²Cd(¹⁸⁴Hg, ¹⁸⁴Hg'), E=524 MeV; ¹²⁰Sn, ¹⁰⁷Ag, ¹¹⁴Cd(¹⁸⁶Hg, ¹⁸⁶Hg'), E=530 MeV; ¹²⁰Sn, ¹⁰⁷Ag, ¹¹⁴Cd(¹⁸⁸Hg, ¹⁸⁸Hg'), E=536 MeV; measured reaction products, Eγ, Iγ, X-rays. ^{182,184,186,188}Hg; deduced γ-ray energies, J, π, transition E2 and M1 reduced matrix elements, branching ratios, B(E2). Comparison with theoretical calculations, GOSIA analysis. The Miniball set-up, REX postaccelerator.

doi: 10.1140/epja/i2019-12815-2
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2018CH01      Nucl.Instrum.Methods Phys.Res. A882, 69 (2018)

A.Chester, G.C.Ball, N.Bernier, D.S.Cross, T.Domingo, T.E.Drake, L.J.Evitts, F.H.Garcia, A.B.Garnsworthy, G.Hackman, S.Hallam, J.Henderson, R.Henderson, R.Krucken, E.MacConnachie, M.Moukaddam, E.Padilla-Rodal, O.Paetkau, J.L.Pore, U.Rizwan, P.Ruotsalainen, J.Shoults, J.Smallcombe, J.K.Smith, K.Starosta, C.E.Svensson, K.Van Wieren, J.Williams, M.Williams

Recoil distance method lifetime measurements at TRIUMF-ISAC using the TIGRESS Integrated Plunger

NUCLEAR REACTIONS ²⁷Al(⁸⁴Kr, ⁸⁴Kr'), E=250 MeV; measured reaction products, Eγ, Iγ. ⁸⁴Kr; deduced first excited state T_1/2 and uncertainty. Comparison with available data.

doi: 10.1016/j.nima.2017.11.029
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2018GI11      Phys.Rev. C 98, 044315 (2018)

M.M.Giles, D.M.Cullen, B.S.Nara Singh, D.Hodge, M.J.Taylor, M.J.Mallaburn, N.V.Sosnin, L.Barber, J.F.Smith, L.Capponi, M.Smolen, C.Scholey, P.Rahkila, T.Grahn, H.Badran, A.Girka, P.T.Greenlees, R.Julin, J.Konki, O.Nefodov, P.Ruotsalainen, M.Sandzelius, J.Saren, J.Sorri, S.Stolze, J.Uusitalo, J.Pakarinen, P.Papadakis, J.Partanen, T.Braunroth, G.G.O'Neill

Lifetime measurements of lowest states in the in the νg_7/2 (X) νh_11/2 rotational band in ¹¹²I

NUCLEAR REACTIONS ⁵⁸Ni(⁵⁸Ni, n3p), E=230 MeV; measured recoils, Eγ, Iγ, γγ-coin, level half-lives using a differential plunger device, and differential decay curve analysis using RITU for recoil separation, JUROGAM-II array for γ detection, and double-sided silicon strip detector for recoils at the K130 cyclotron facility of the University of Jyvaskyla. ¹¹²I; deduced high-spin levels, J, π, alignments, configurations. Comparison with previous experimental values.

doi: 10.1103/PhysRevC.98.044315
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2018HE09      Phys.Rev. C 97, 044311 (2018)

J.Henderson, A.Chester, G.C.Ball, R.Caballero-Folch, T.Domingo, T.E.Drake, L.J.Evitts, A.B.Garnsworthy, G.Hackman, S.Hallam, M.Moukaddam, P.Ruotsalainen, J.Smallcombe, J.K.Smith, K.Starosta, C.E.Svensson, J.Williams

Lifetimes of low-lying excited states in ⁸⁶₃₆Kr₅₀

NUCLEAR REACTIONS C(⁸⁶Kr, ⁸⁶Kr'), E=256.7 MeV, unsafe Coulomb excitation; measured Eγ, ⁸⁶Kr scattered particles, (particle)γ-coin, half-lives of 2+ and 3- states by Doppler-shift attenuation method (DSAM) using the 4π TIGRESS array for γ detection, and TIGRESS integrated plunger (TIP) for particle detection at TRIUMF-ISAC facility. ⁸⁶Kr; deduced levels, B(E2), B(E1), B(M1). Comparison with previous measurements. Systematics of B(E2) values for first 2+ states in ⁸⁰Zn, ⁸²Ge, ⁸⁴Se, ⁸⁶Kr, ⁸⁸Sr, ⁹⁰Zr and ⁹²Mo.

doi: 10.1103/PhysRevC.97.044311
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2018KA27      Phys.Rev. C 98, 014309 (2018)

L.Kaya, A.Vogt, P.Reiter, M.Siciliano, B.Birkenbach, A.Blazhev, L.Coraggio, E.Teruya, N.Yoshinaga, K.Higashiyama, K.Arnswald, D.Bazzacco, A.Bracco, B.Bruyneel, L.Corradi, F.C.L.Crespi, G.de Angelis, J.Eberth, E.Farnea, E.Fioretto, C.Fransen, B.Fu, A.Gadea, A.Gargano, A.Giaz, A.Gorgen, A.Gottardo, K.Hadynska-Klek, H.Hess, R.Hetzenegger, R.Hirsch, N.Itaco, P.R.John, J.Jolie, A.Jungclaus, W.Korten, S.Leoni, L.Lewandowski, S.Lunardi, R.Menegazzo, D.Mengoni, C.Michelagnoli, T.Mijatovic, G.Montagnoli, D.Montanari, C.Muller-Gatermann, D.Napoli, Zs.Podolyak, G.Pollarolo, A.Pullia, M.Queiser, F.Recchia, D.Rosiak, N.Saed-Samii, E.Sahin, F.Scarlassara, D.Schneiders, M.Seidlitz, B.Siebeck, J.F.Smith, P.-A.Soderstrom, A.M.Stefanini, T.Steinbach, O.Stezowski, S.Szilner, B.Szpak, C.Ur, J.J.Valiente-Dobon, K.Wolf, K.O.Zell

High-spin structure in the transitional nucleus ¹³¹Xe: Competitive neutron and proton alignment in the vicinity of the N=82 shell closure

NUCLEAR REACTIONS ²⁰⁸Pb(¹³⁶Xe, X), E=6.84 MeV/nucleon; ²³⁸U(¹³⁶Xe, X), E=7.35 MeV/nucleon; measured projectile-like reaction fragments using PRISMA magnetic spectrometer, Eγ, Iγ, γγ- and (¹³¹Xe)γ-coin using AGATA demonstrator array for γ detection at LNL-Legnaro. ¹²⁴Sn(¹¹B, 3np), E=54 MeV; measured Eγ, Iγ, γγ and pγ-coin, γγ(θ) using HORUS array at Cologne for γ detection and annular double-sided silicon strip detector (DSSSD) for particles. ¹³¹Xe; deduced levels, J, π, high-spin states. Comparison with shell-model calculations using several different interactions; discussed systematics of high-spin states in Z=54 nuclei of ^{123,125,127,129,131}Xe, and N=77 nuclei of ¹²⁷Sn, ¹²⁹Te¹³¹Xe, ¹³³Ba, ¹³⁵Ce, ¹³⁷Nd, ¹³⁹Sm, ¹⁴¹Gd; compiled experimental total aligned angular momentum versus rotational frequency plots for yrast bands in A=117-132 Xe isotopes.

NUCLEAR STRUCTURE ¹³¹Xe; calculated levels, J, π, contribution of proton and neutron configurations for selected states, proton and neutron occupation numbers in h_11/2 orbital, total aligned angular momenta as function of rotational frequency, and B(E2) using shell-model calculations with PQM130, SN100PN, GCN50:82, realistic SM, and SN100-KTH interactions. ¹²⁹Xe; calculated proton and neutron occupation numbers in h_11/2 orbital, total aligned angular momenta as function rotational frequency using shell model. Comparison with experimental data.

doi: 10.1103/PhysRevC.98.014309
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2018KH05      Phys.Rev. C 97, 064618 (2018)

J.Khuyagbaatar, H.M.David, D.J.Hinde, I.P.Carter, K.J.Cook, M.Dasgupta, Ch.E.Dullmann, D.Y.Jeung, B.Kindler, B.Lommel, D.H.Luong, E.Prasad, D.C.Rafferty, C.Sengupta, C.Simenel, E.C.Simpson, J.F.Smith, K.Vo-Phuoc, J.Walshe, A.Wakhle, E.Williams, A.Yakushev

Nuclear structure dependence of fusion hindrance in heavy element synthesis

NUCLEAR REACTIONS ^204,208Pb(⁴⁸Ti, X), E=240.0, 245.0, 252.2, 259.0, 270.0, 280.0 MeV; ^206,208Pb(⁵⁰Ti, X), E=236.0, 240.0, 252.0, 258.0, 264.0, 270.0, 280.2 MeV; measured reaction products, mass ratio and angular distributions (MAD) of fragments, double differential σ(θ, M_R), and widths using CUBE detector array at the Heavy Ion Accelerator Facility of Australian National University. ²⁰⁶Pb(³⁶S, X), (³⁴S, X), (⁴⁸Ti, X), (⁵⁰Ti, X), E^*=25-60 MeV; calculated mean-squared angular momenta, widths and M_R distributions, and compared with experimental data. Discussed impact of nuclear structure on fusion-evaporation reactions.

doi: 10.1103/PhysRevC.97.064618
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2018LE10      Phys.Rev. C 98, 024302 (2018)

M.C.Lewis, E.Parr, R.D.Page, C.McPeake, D.T.Joss, F.A.Ali, K.Auranen, A.D.Briscoe, L.Capponi, T.Grahn, P.T.Greenlees, J.Henderson, A.Herzan, U.Jakobsson, R.Julin, S.Juutinen, J.Konki, M.Labiche, M.Leino, P.J.R.Mason, M.Nyman, D.O'Donnell, J.Pakarinen, P.Papadakis, J.Partanen, P.Peura, P.Rahkila, J.P.Revill, P.Ruotsalainen, M.Sandzelius, J.Saren, B.Saygi, C.Scholey, J.Simpson, J.F.Smith, M.Smolen, J.Sorri, S.Stolze, A.Thornthwaite, J.Uusitalo

Decay of a 19^- isomeric state in ¹⁵⁶Lu

NUCLEAR REACTIONS ¹⁰⁶Cd(⁵⁸Ni, n3pα), E=318 MeV; measured Eγ, Iγ γγ-coin, delayed γ rays, and (implants)γα correlations, half-life of a 19- isomer by γγ(t) using RITU separator and GREAT spectrometer at Jyvaskyla. ¹⁵⁶Lu; deduced levels, J, π, multipolarity, configurations, B(M2), and B(E3). Systematics of 9+, 10+, and 19- states in even-A N=85 isotones ¹⁵⁰Tb, ¹⁵²Ho, ¹⁵⁴Tm, ¹⁵⁶Lu, ¹⁵⁸Ta, ¹⁶⁰Re.

doi: 10.1103/PhysRevC.98.024302
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2018MO34      Nucl.Instrum.Methods Phys.Res. A905, 180 (2018)

M.Moukaddam, J.Smallcombe, L.J.Evitts, A.B.Garnsworthy, C.Andreoiu, G.C.Ball, J.Berean-Dutcher, D.Bishop, C.Bolton, R.Caballero-Folch, M.Constable, D.S.Cross, T.E.Drake, R.Dunlop, P.E.Garrett, S.Georges, G.Hackman, S.Hallam, J.Henderson, R.Henderson, R.Krucken, L.Kurchaninov, A.Kurkjian, B.Olaizola, E.O'Sullivan, P.Lu, J.Park, E.E.Peters, J.L.Pore, E.T.Rand, P.Ruotsalainen, J.K.Smith, D.Southall, M.Spencer, C.E.Svensson, M.Wiens, M.Williams, S.W.Yates, T.Zidar

In-beam internal conversion electron spectroscopy with the SPICE detector

NUCLEAR REACTIONS ¹¹⁰Pd(α, X)¹⁰⁹Pd/¹¹⁰Pd/¹¹¹Ag, E=36 MeV; measured reaction products, Eγ, Iγ, Eβ, Iβ; deduced internal conversion electrons spectra and coefficients, energy levels, J, π. Comparison with BrICC calculations. The SPectrometer for Internal Conversion Electrons (SPICE), TIGRESS γ-ray spectrometer, TRIUMF-ISAC-II superconducting linear accelerator.

doi: 10.1016/j.nima.2018.07.064
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2018OR03      Phys.Lett. B 785, 615 (2018)

R.Orlandi, S.D.Pain, S.Ahn, A.Jungclaus, K.T.Schmitt, D.W.Bardayan, W.N.Catford, R.Chapman, K.A.Chipps, J.A.Cizewski, C.G.Gross, M.E.Howard, K.L.Jones, R.L.Kozub, B.Manning, M.Matos, K.Nishio, P.D.O'Malley, W.A.Peters, S.T.Pittman, A.Ratkiewicz, C.Shand, J.F.Smith, M.S.Smith, T.Fukui, J.A.Tostevin, Y.Utsuno

Neutron-hole states in ¹³¹Sn and spin-orbit splitting in neutron-rich nuclei

NUCLEAR STRUCTURE ^131,132,133Sn; analyzed available data; deduced spectroscopic factors, a significant reduction of the energy splitting of the weakly bound 3p orbits compared to the well-bound 2d orbits; calculated energy splitting using a one-body spin-orbit interaction and a Woods–Saxon potential of standard radius and diffuseness.

NUCLEAR REACTIONS ²H(¹³²Sn, t)¹³¹Sn, E ∼ 4.4 MeV/nucleon; measured reaction products; deduced σ(θ), orbital angular momentum, energy levels, J, π.

doi: 10.1016/j.physletb.2018.08.005
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2018PA37      Phys.Rev. C 98, 024321 (2018)

E.Parr, R.D.Page, D.T.Joss, F.A.Ali, K.Auranen, L.Capponi, T.Grahn, P.T.Greenlees, J.Henderson, A.Herzan, U.Jakobsson, R.Julin, S.Juutinen, J.Konki, M.Labiche, M.Leino, P.J.R.Mason, C.McPeake, D.O'Donnell, J.Pakarinen, P.Papadakis, J.Partanen, P.Peura, P.Rahkila, J.P.Revill, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Simpson, J.F.Smith, M.Smolen, J.Sorri, S.Stolze, A.Thornthwaite, J.Uusitalo

Fine structure in the α decay of high-spin isomers in ¹⁵⁵Lu and ¹⁵⁶Hf

RADIOACTIVITY ^155,155mLu, ¹⁵⁶Hf(α)[from ¹⁰⁶Cd(⁵⁸Ni, X), E=318 MeV, followed by separation of fusion reaction products using RITU gas-filled recoil separator at JYFL-Jyvaskyla]; measured Eα, Iα, Eγ, Iγ, x-rays, αγ-coin using an array of HPGe detectors for γ and x-ray detection, double-sided silicon-strip detectors (DSSDs) for particle detection using GREAT spectrometer at Jyvaskyla. ¹⁵¹Tm, ¹⁵²Yb; deduced levels, J, π, α branching ratios, reduced decay widths, hindrance factors and Q(α) values, configurations.

doi: 10.1103/PhysRevC.98.024321
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2018SM03      Phys.Rev.Lett. 120, 143002 (2018)

J.A.Smith, S.Hamzeloui, D.J.Fink, E.G.Myers

Rotational Energy as Mass in H⁺₃ and Lower Limits on the Atomic Masses of D and ³He

ATOMIC MASSES ^1,2H, ³He; measured cyclotron frequency ratios; deduced mass difference, lower limits on the atomic masses of deuterium and helium-3 with respect to the proton.

doi: 10.1103/PhysRevLett.120.143002
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2018WI09      Phys.Rev. C 98, 041302 (2018)

W.Witt, V.Werner, N.Pietralla, M.Albers, A.D.Ayangeakaa, B.Bucher, M.P.Carpenter, D.Cline, H.M.David, A.Hayes, C.Hoffman, R.V.F.Janssens, B.P.Kay, F.G.Kondev, W.Korten, T.Lauritsen, O.Moller, G.Rainovski, G.Savard, D.Seweryniak, J.Smith, R.Stegmann, S.Zhu, C.Y.Wu

Sub-shell closure and shape coexistence in the transitional nucleus ⁹⁸Zr

NUCLEAR REACTIONS ¹⁹⁶Pt(⁹⁸Zr, ⁹⁸Zr'), E=464 MeV from CARIBU source at ATLAS-ANL facility; measured recoils, Eγ, Iγ, (recoil)γ-coin using CHICO2 array of segmented parallel-plate avalanche counter (PPAC) for recoil detection, and GRETINA array of segmented HPGe detectors for γ detection. Coulomb excitation. ⁹⁸Zr; deduced levels, upper limit of B(E2) for the first 2+ state. Comparison with shell model and Monte-Carlo shell model calculations, and with previous experimental values. Systematics of B(E2) values for the first 2+ states in ^{90,92,94,96,98,100,102,104,106}Zr.

doi: 10.1103/PhysRevC.98.041302
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2017AN15      Phys.Rev. C 96, 054323 (2017)

S.Ansari, J.-M.Regis, J.Jolie, N.Saed-Samii, N.Warr, W.Korten, M.Zielinska, M.-D.Salsac, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.S.Simpson, F.Drouet, A.Vancraeyenest, G.de France, E.Clement, O.Stezowski, C.A.Ur, W.Urban, P.H.Regan, Zs.Podolyak, C.Larijani, C.Townsley, R.Carroll, E.Wilson, H.Mach, L.M.Fraile, V.Paziy, B.Olaizola, V.Vedia, A.M.Bruce, O.J.Roberts, J.F.Smith, M.Scheck, T.Kroll, A.-L.Hartig, A.Ignatov, S.Ilieva, S.Lalkovski, N.Marginean, T.Otsuka, N.Shimizu, T.Togashi, Y.Tsunoda

Experimental study of the lifetime and phase transition in neutron-rich ^{98, 100, 102}Zr

NUCLEAR REACTIONS ²³⁵U(n, F), ²⁴¹Pu(n, F), E=cold neutrons beam from PF1B, Institut Laue-Langevin (ILL), Grenoble; measured Eγ, γγ-coin, half-lives of the first 2+, 4+ and 6+ levels by fast-timing technique using the EXILL-FATIMA array consisting of eight EXOGAM clovers and 16 LaBr₃(Ce) scintillators; fast-timing coincidence events analyzed using method of mirror symmetric centroid difference (MSCD) and generalized centroid difference method (GCDM). ^98,100,102Zr; deduced levels, B(E2). Comparison with Interacting Boson model and Monte-Carlo shell-model calculations, and with previous experimental results. Systematics of B(E2) values for the first 2+, 4+ and 6+ states in ^{96,98,100,102,104,106}Zr.

doi: 10.1103/PhysRevC.96.054323
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2017CO13      Eur.Phys.J. A 53, 166 (2017)

P.Colovic, S.Szilner, L.Corradi, T.Mijatovic, G.Pollarolo, A.Goasduff, D.Montanari, R.Chapman, E.Fioretto, A.Gadea, F.Haas, D.Jelavic Malenica, N.Marginean, D.Mengoni, M.Milin, G.Montagnoli, F.Scarlassara, J.F.Smith, N.Soic, A.M.Stefanini, C.A.Ur, J.J.Valiente-Dobon

Stretched configuration of states as inferred from Formula γ-ray angular distributions in ⁴⁰Ar + ²⁰⁸Pb neutron transfer reactions

NUCLEAR REACTIONS ²⁰⁸Pb(⁴⁰Ar, ⁴⁰Ar'), (⁴⁰Ar, ⁴¹Ar), (⁴⁰Ar, ⁴²Ar), E=6.4 MeV/nucleon; measured Eγ, Iγ(θ) using PRISMA magnetic spectrometer coupled to CLARA γ-array. ^40,41,42Ar; deduced (unnormalized) γ-ray σ(θ), γ-transitions, level spin adjustments for (some) discrete levels.

doi: 10.1140/epja/i2017-12358-6
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2017DI12      Phys.Rev. C 96, 044320 (2017)

F.Didierjean, D.Verney, G.Duchene, J.Litzinger, K.Sieja, A.Dewald, A.Goasduff, R.Lozeva, C.Fransen, G.de Angelis, S.Aydin, D.Bazzacco, A.Bracco, S.Bottoni, L.Corradi, F.Crespi, E.Ellinger, E.Farnea, E.Fioretto, S.Franchoo, A.Gottardo, L.Grocutt, M.Hackstein, F.Ibrahim, K.Kolos, S.Leoni, S.Lenzi, S.Lunardi, R.Menegazzo, D.Mengoni, C.Michelagnoli, T.Mijatovic, V.Modamio, O.Moller, G.Montagnoli, D.Montanari, A.I.Morales, D.Napoli, M.Niikura, F.Recchia, E.Sahin, F.Scarlassara, L.Sengele, S.Szilner, J.F.Smith, A.M.Stefanini, C.Ur, J.J.Valiente-Dobon, V.Vandone

Neutron effective single-particle energies above ⁷⁸Ni: A hint from lifetime measurements in the N=51 isotones ⁸⁵Se and ⁸⁷Kr

NUCLEAR REACTIONS ²³⁸U(⁸²Se, ⁸⁵Se), (⁸²Se, ⁸⁷Kr), E=530 MeV; measured Eγ, Iγ, particle spectra, (⁸⁷Kr)γ-coin, (⁸²Se)γ-coin, level half-lives by recoil-distance Doppler-shift (RDDS) method using Prisma spectrometer for particle detection, AGATA demonstrator array for γ detection, and Cologne plunger device for half-life measurements at LNL, Legnaro tandem-ALPI facility. ⁸⁷Kr, ⁸⁵Se; deduced levels, J, π, configurations. Comparison with core-coupled model and shell model calculations. ²³⁸U(⁸²Se, X)⁷⁹Se/⁸⁰Se/⁸¹Se/⁸²Se/⁸³Se/⁸⁴Se/⁸⁵Se/⁸⁶Se/⁸⁰Kr/⁸¹Kr/⁸²Kr/⁸³Kr/⁸⁴Kr/⁸⁵Kr/⁸⁶Kr/⁸⁷Kr/⁸⁸Kr/⁸⁹Kr/⁹⁰Kr/⁹¹Kr/⁹²Kr/⁹³Kr, E=530 MeV; measured isotopic yields. Systematics of energies of 5/2+ ground states, 1/2+, 7/2+ and 9/2+ states in N=51 isotones ⁸³Ge, ⁸⁵Se, ⁸⁷Kr, ⁸⁹Sr, ⁹¹Zr, ⁹³Mo.

doi: 10.1103/PhysRevC.96.044320
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2017DU11      Phys.Rev. C 96, 045502 (2017)

M.R.Dunlop, C.E.Svensson, G.C.Ball, J.R.Leslie, C.Andreoiu, N.Bernier, H.Bidaman, V.Bildstein, M.Bowry, C.Burbadge, R.Caballero-Folch, A.Diaz Varela, R.Dunlop, A.B.Garnsworthy, P.E.Garrett, G.Hackman, B.Jigmeddorj, K.G.Leach, A.D.MacLean, B.Olaizola, J.Measures, C.Natzke, Y.Saito, J.K.Smith, J.Turko, T.Zidar

High-precision half-life measurement for the superallowed Fermi β⁺ emitter ²²Mg

RADIOACTIVITY ²²Mg(β⁺)[from Si(p, X), E=480 MeV using ion guide laser ion source (IGLIS) at ISAC-TRIUMF facility]; measured Eγ, Iγ, β⁺ radiation, βγ-coin using a 4π continuous-flow gas proportional counter for β radiation and GRIFFIN array for γ detection, precise half-life of decay of ²²Mg with detailed uncertainty analysis. Comparison with previous experimental results. Proposed further experiments to improve uncertainty of the superallowed branching ratio for tests of the CVC hypothesis.

doi: 10.1103/PhysRevC.96.045502
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2017FI07      Phys.Rev. C 96, 025501 (2017)

P.Finlay, A.T.Laffoley, G.C.Ball, P.C.Bender, M.R.Dunlop, R.Dunlop, G.Hackman, J.R.Leslie, A.D.MacLean, D.Miller, M.Moukaddam, B.Olaizola, N.Severijns, J.K.Smith, D.Southall, C.E.Svensson

High-precision half-life determination for ²¹Na using a 4π gas-proportional counter

RADIOACTIVITY ²¹Na(β⁺)[from Ta(p, X), E=480 MeV at TRIUMF cyclotron]; measured Eγ, βγ-coin, β⁺ particles, precise half-life of ²¹Na decay using 4π continuous-flow gas proportional counter at TRIUMF-ISAC facility. detailed analysis of half-life data and systematic uncertainties. ²¹Na; deduced world-average half-life by combining present result with previous measurements, and discussed contribution to the uncertainty in the Ft value of the superallowed β⁺ transition between the isospin T=1/2 mirror nuclei ²¹Na and ²¹Ne.

doi: 10.1103/PhysRevC.96.025501
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2017GA04      Acta Phys.Pol. B48, 523 (2017)

P.E.Garrett, B.Jigmeddorj, A.D.MacLean, H.Bidaman, V.Bildstein, C.Burbadge, G.A.Demand, A.Diaz Varela, M.Dunlop, R.Dunlop, B.Hadinia, B.Olaizola, C.E.Svensson, J.Turko, T.Zidar, A.B.Garnsworthy, M.Bowry, P.C.Bender, G.C.Ball, R.Caballero-Folch, I.Dillmann, G.Hackman, J.Henderson, W.J.Mills, M.Moukaddam, J.Park, C.J.Pearson, P.Ruotsalainen, J.Smallcombe, J.K.Smith, C.Andreoiu, D.S.Cross, J.L.Pore, K.Starosta

High-statistics β-decay Measurements at TRIUMF-ISAC and the Transition from the 8π Spectrometer to GRIFFIN

RADIOACTIVITY ¹²²Cs(β⁺), (EC); measured Eγ, Iγ(θ), γγ-coin deduced low-lying levels, J, π, γ transitions, γ-ray coincidence spectra, unnormalized γ-ray σ(θ). Review lecture, everything just as examples, but it is not clear what has been published before and what is here for the first time.

doi: 10.5506/APhysPolB.48.523
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2017GR06      Eur.Phys.J. A 53, 50 (2017)

E.T.Gregor, M.Scheck, R.Chapman, L.P.Gaffney, J.Keatings, K.R.Mashtakov, D.O'Donnell, J.F.Smith, P.Spagnoletti, M.Thurauf, V.Werner, C.Wiseman

Shell evolution of stable N = 50-56 Zr and Mo nuclei with respect to low-lying octupole excitations

COMPILATION ^{90,92,94,96,98,100}Zr, ^{92,94,96,98,100,102}Mo; compiled effective single-particle energies from available particle-transfer data; deduced E(0⁺₂), E(2⁺₁), E(4⁺₁), E(3^-₁), B(E2), B(E3), single-particle energies of neutron subshells of odd-mass Zr and Mo isotopes. ^{90,92,94,96,98,100}Zr; deduced type-II shape coexistence.

doi: 10.1140/epja/i2017-12224-7
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2017HA33      Phys.Rev. A 96, 060501R (2017)

S.Hamzeloui, J.A.Smith, D.J.Fink, E.G.Myers

Precision mass ratio of ³He⁺ to HD⁺

ATOMIC MASSES ³He, ^1,2H; measured cyclotron frequency ratio; deduced mass ratio.

doi: 10.1103/PhysRevA.96.060501
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2017JO06      Phys.Rev. C 95, 044323 (2017), Erratum Phys.Rev. C 96, 059902 (2017)

M.D.Jones, T.Baumann, J.Brett, J.Bullaro, P.A.DeYoung, J.E.Finck, N.Frank, K.Hammerton, J.Hinnefeld, Z.Kohley, A.N.Kuchera, J.Pereira, A.Rabeh, J.K.Smith, A.Spyrou, S.L.Stephenson, K.Stiefel, M.Tuttle-Timm, R.G.T.Zegers, M.Thoennessen

Neutron-unbound excited states of ²³N

NUCLEAR REACTIONS ²H(²⁴O, p)²³N, E=83.4 MeV/nucleon, [secondary ²⁴O beam from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon primary reaction at NSCL-MSU accelerator facility]; measured reaction products and identified via ΔE vs. time-of-flight measurement, neutron spectra from the decay of ²³N excited states using MONA and LISA arrays of plastic scintillators; analyzed two-body decay energy spectrum for ²²N+1n. ²³N; deduced levels above S(n), J, π, S(n), S(2n), configurations; calculated levels, J, π using shell-model and several interactions.

doi: 10.1103/PhysRevC.95.044323
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2017JO12      Phys.Rev. C 96, 054322 (2017)

M.D.Jones, K.Fossez, T.Baumann, P.A.DeYoung, J.E.Finck, N.Frank, A.N.Kuchera, N.Michel, W.Nazarewicz, J.Rotureau, J.K.Smith, S.L.Stephenson, K.Stiefel, M.Thoennessen, R.G.T.Zegers

Search for excited states in ²⁵O

NUCLEAR REACTIONS ²H(²⁴O, ²⁵O), E=83.4 MeV/nucleon, [secondary ²⁴O beam from ⁹Be(⁴⁸Ca, X) primary reaction using A1900 fragment separator at NSCL-MSU facility]; measured ²⁴O particles by a position and energy sensitive charged particle detector and separated based on energy loss and time-of-flight, and neutrons from ²⁵O decay by the MoNA-LISA detector array. ²⁵O; deduced two-body (²⁴O+n) decay energy spectrum by invariant-mass spectroscopy technique, neutron-unbound ground state, L-transfer, asymptotic normalization coefficients, cross section and width of a possible 1/2+ resonance above the ground state. Comparisons with previous experimental results, and with theoretical calculations using complex-energy Gamow Shell Model (GSM) and Density Matrix Renormalization Group (DMRG) method with a finite-range two-body interaction.

NUCLEAR STRUCTURE ^{23,24,25,26,27,28}O; calculated levels, J, π using complex-energy Gamow Shell Model (GSM) and Density Matrix Renormalization Group (DMRG) method with a finite-range two-body interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.96.054322
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2017NA15      Phys.Rev. C 95, 064303 (2017)

H.Naidja, F.Nowacki, B.Bounthong, M.Czerwinski, T.Rzaca-Urban, T.Roginski, W.Urban, J.Wisniewski, K.Sieja, A.G.Smith, J.F.Smith, G.S.Simpson, I.Ahmad, J.P.Greene

New excitations in ¹⁴²Ba and ¹⁴⁴Ce: Evolution of γ bands in the N=86 isotones

RADIOACTIVITY ²⁵²Cf(SF); ¹⁴⁴La(β^-)[from ²⁵²Cf SF]; measured Eγ, Iγ, γγ-coin, γγ(θ) using Gammasphere array at Argonne National Laboratory. ¹⁴²Ba, ¹⁴⁴Ce; deduced high-spin levels, J, π, multipolarity, mixing ratios. ¹⁴⁰Xe; deduced multipolarity and mixing ratios from γγ(θ) data. Comparison with large-scale shell-model calculations.

NUCLEAR STRUCTURE ¹⁴²Ba, ¹⁴⁴Ce; calculated levels, J, π, quadrupole moments, B(E2), potential energy surfaces in (β, γ) plane using large-scale shell-model. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.064303
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2017RE05      Phys.Rev. C 95, 054319 (2017); Erratum Phys.Rev. C 95, 069902 (2017)

J.-M.Regis, J.Jolie, N.Saed-Samii, N.Warr, M.Pfeiffer, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.S.Simpson, F.Drouet, A.Vancraeyenest, G.de France, E.Clement, O.Stezowski, C.A.Ur, W.Urban, P.H.Regan, Zs.Podolyak, C.Larijani, C.Townsley, R.Carroll, E.Wilson, L.M.Fraile, H.Mach, V.Paziy, B.Olaizola, V.Vedia, A.M.Bruce, O.J.Roberts, J.F.Smith, M.Scheck, T.Kroll, A.-L.Hartig, A.Ignatov, S.Ilieva, S.Lalkovski, W.Korten, N.Marginean, T.Otsuka, N.Shimizu, T.Togashi, Y.Tsunoda

Abrupt shape transition at neutron number N=60: B(E2) values in ^{94, 96, 98}Sr from fast γ - γ timing

NUCLEAR REACTIONS ²³⁵U(n, Fγ), E=cold neutron beam; measured Eγ, Iγ, level half-lives by fast-timing γγ(t) method using EXILL and FATIMA spectrometer at ILL-Grenoble reactor facility. ^94,96,98Sr; deduced levels, B(E2)values. Comparison with previous experimental values, and with Monte Carlo Shell-model calculations.

doi: 10.1103/PhysRevC.95.054319
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2017SC06      Acta Phys.Pol. B48, 547 (2017)

M.Scheck, S.Mishev, V.Yu.Ponomarev, O.Agar, T.Beck, A.Blanc, R.Chapman, U.Gayer, L.P.Gaffney, E.T.Gregor, J.Keatings, P.Koseoglou, U.Koster, K.R.Mashtakov, D.O'Donnell, H.Pai, N.Pietralla, D.Savran, J.F.Smith, P.Spagnoletti, G.S.Simpson, M.Thurauf, V.Werner

β Decay as a New Probe for the Low-energy E1 Strength

RADIOACTIVITY ¹³⁶I(β^-); deduced discrete levels, γ transitions intensity, level population probability, branching ratios, B(E1) using published data. Compared with results from ¹³⁶Xe(γ, γ').

NUCLEAR REACTIONS ¹³⁶Xe(γ, γ'), E not given; deduced discrete transitions intensity, level population probability, branching ratios, B(E1) using published data.

doi: 10.5506/APhysPolB.48.547
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2017TA30      Phys.Lett. B 774, 268 (2017)

J.Tanaka, R.Kanungo, M.Alcorta, N.Aoi, H.Bidaman, C.Burbadge, G.Christian, S.Cruz, B.Davids, A.Diaz Varela, J.Even, G.Hackman, M.N.Harakeh, J.Henderson, S.Ishimoto, S.Kaur, M.Keefe, R.Krucken, K.G.Leach, J.Lighthall, E.Padilla-Rodal, J.S.Randhawa, P.Ruotsalainen, A.Sanetullaev, J.K.Smith, O.Workman, I.Tanihata

Halo-induced large enhancement of soft dipole excitation of ¹¹Li observed via proton inelastic scattering

NUCLEAR REACTIONS ¹H(¹¹Li, p'), E=66 MeV; measured reaction products, Ep, Ip. ¹¹Li; deduced σ(θ), B(E1). DWBA calculations.

doi: 10.1016/j.physletb.2017.09.079
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2017VO01      Phys.Rev. C 95, 024316 (2017)

A.Vogt, B.Birkenbach, P.Reiter, A.Blazhev, M.Siciliano, K.Hadynska-Klek, J.J.Valiente-Dobon, C.Wheldon, E.Teruya, N.Yoshinaga, K.Arnswald, D.Bazzacco, M.Bowry, A.Bracco, B.Bruyneel, R.S.Chakrawarthy, R.Chapman, D.Cline, L.Corradi, F.C.L.Crespi, M.Cromaz, G.de Angelis, J.Eberth, P.Fallon, E.Farnea, E.Fioretto, S.J.Freeman, B.Fu, A.Gadea, K.Geibel, W.Gelletly, A.Gengelbach, A.Giaz, A.Gorgen, A.Gottardo, A.B.Hayes, H.Hess, R.Hirsch, H.Hua, P.R.John, J.Jolie, A.Jungclaus, L.Kaya, W.Korten, I.Y.Lee, S.Leoni, L.Lewandowski, X.Liang, S.Lunardi, A.O.Macchiavelli, R.Menegazzo, D.Mengoni, C.Michelagnoli, T.Mijatovic, G.Montagnoli, D.Montanari, C.Muller-Gatermann, D.Napoli, C.J.Pearson, L.Pellegri, Zs.Podolyak, G.Pollarolo, A.Pullia, M.Queiser, F.Radeck, F.Recchia, P.H.Regan, D.Rosiak, N.Saed-Samii, E.Sahin, F.Scarlassara, D.Schneiders, M.Seidlitz, B.Siebeck, G.Sletten, J.F.Smith, P.-A.Soderstrom, A.M.Stefanini, T.Steinbach, O.Stezowski, S.Szilner, B.Szpak, R.Teng, C.Ur, V.Vandone, D.D.Warner, A.Wiens, C.Y.Wu, K.O.Zell

Isomers and high-spin structures in the N=81 isotones ¹³⁵Xe and ¹³⁷Ba

NUCLEAR REACTIONS ²³⁸U(¹³⁶Xe, X), E=1 GeV; ²⁰⁸Pb(¹³⁶Xe, X), E=930 MeV; ¹⁹⁸Pt(¹³⁶Xe, X), E=850 MeV; ¹³⁰Te(¹¹B, 3np)¹³⁷Ba, E=54 MeV; measured reaction products, Eγ, Iγ, (particle)γ-coin, γγ-coin, (TKEL)γ-coin, half-lives of isomers by γγ(t). Four experiments carried out using ¹³⁶Xe beam with ²⁰⁸Pb and ²³⁸U targets using PRISMA magnetic mass spectrometer and AGATA demonstrator array at Legnaro PIAVE+ALPI accelerator, ¹³⁶Xe beam with ¹⁹⁸Pt target using GAMMASPHERE and CHICO particle detector arrays at LBNL-cyclotron facility, and ¹¹B beam with ¹³⁰Te target using HORUS array at Cologne FN Tandem accelerator. ¹³⁵Xe, ¹³⁷Ba; deduced levels, J, π, isomers, configurations, B(E2). Comparison with shell-model calculations. Systematics of levels and isomers in N=81 nuclides ¹³¹Sn, ¹³³Te, ¹³⁵Xe, ¹³⁷Ba, ¹³⁹Ce, ¹⁴¹Nd, ¹⁴³Sm and ¹⁴⁵Gd.

NUCLEAR STRUCTURE ¹³⁵Xe, ¹³⁷Ba; calculated levels, J, π, B(E2) using large-scale shell-model with PQM130 and SN100PN interactions, average proton occupation numbers in each single particle orbit of the gdsh model space. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.024316
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2017VO06      Phys.Rev. C 96, 024321 (2017)

A.Vogt, M.Siciliano, B.Birkenbach, P.Reiter, K.Hadynska-Klek, C.Wheldon, J.J.Valiente-Dobon, E.Teruya, N.Yoshinaga, K.Arnswald, D.Bazzacco, A.Blazhev, A.Bracco, B.Bruyneel, R.S.Chakrawarthy, R.Chapman, D.Cline, L.Corradi, F.C.L.Crespi, M.Cromaz, G.de Angelis, J.Eberth, P.Fallon, E.Farnea, E.Fioretto, C.Fransen, S.J.Freeman, B.Fu, A.Gadea, W.Gelletly, A.Giaz, A.Gorgen, A.Gottardo, A.B.Hayes, H.Hess, R.Hetzenegger, R.Hirsch, H.Hua, P.R.John, J.Jolie, A.Jungclaus, V.Karayonchev, L.Kaya, W.Korten, I.Y.Lee, S.Leoni, X.Liang, S.Lunardi, A.O.Macchiavelli, R.Menegazzo, D.Mengoni, C.Michelagnoli, T.Mijatovic, G.Montagnoli, D.Montanari, C.Muller-Gatermann, D.Napoli, C.J.Pearson, Zs.Podolyak, G.Pollarolo, A.Pullia, M.Queiser, F.Recchia, P.H.Regan, J.-M.Regis, N.Saed-Samii, E.Sahin, F.Scarlassara, M.Seidlitz, B.Siebeck, G.Sletten, J.F.Smith, P.-A.Soderstrom, A.M.Stefanini, O.Stezowski, S.Szilner, B.Szpak, R.Teng, C.Ur, D.D.Warner, K.Wolf, C.Y.Wu, K.O.Zell

High-spin structures in ¹³²Xe and ¹³³Xe and evidence for isomers along the N=79 isotones

NUCLEAR REACTIONS ²⁰⁸Pb(¹³⁶Xe, X)¹³²Xe/¹³³Xe, E=6.84 MeV/nucleon from the PIAVE+ALPI accelerator complex at LNL-Legnaro; ¹⁹⁸Pt(¹³⁶Xe, X)¹³²Xe/¹³³Xe, E=6.25 MeV/nucleon from the LBNL cyclotron facility; ¹³⁰Te(α, nγ), (α, 2nγ), E=19 MeV from Cologne FN Tandem accelerator; measured Eγ, Iγ, γγ-, (particle)γ-coin using Advanced GAmma Tracking Array (AGATA) in a demonstrator configuration, and magnetic spectrometer PRISMA for particle identification, (particle)γ-coin using Gammasphere array and CHICO gas-detector array, γγ(θ) using HORUS array at Cologne. ^132,133Xe; deduced high-spin levels, J, π, half-life of a micro-sec isomer in ¹³³Xe with Jπ=(23/2+), multipolarities, mixing ratios. Comparison with shell-model calculations using PQM130 and SN100PN interactions. Systematics of level energies in N=78 and 79 isotones from Z=50 to 64, and even-A A=120-136 Xe isotopes.

doi: 10.1103/PhysRevC.96.024321
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2017WI15      Phys.Rev. C 96, 064301 (2017)

J.Wisniewski, W.Urban, T.Rzaca-Urban, A.G.Smith, J.F.Smith, G.S.Simpson, I.Ahmad, J.P.Greene

Parity-doublet structure in the ¹⁴⁷₅₇La₉₀ nucleus

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, Iγ, γγγ-coin, γγ(θ) using Gammasphere array at ANL. ¹⁴⁷La; deduced high-spin levels, J, π, multipolarities, multipole mixing ratios, parity-doublet structures, alignments, configurations, B(E1)/B(E2) ratios, intrinsic electric dipole moment D₀, octupole correlations, Systematics of 3/2+, 5/2+, 7/2+, 3/2-, 7/2- and 11/2- levels in ^{139,141,143,145,147,149}La.

doi: 10.1103/PhysRevC.96.064301
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2016CA33      Phys.Rev. C 94, 024314 (2016)

L.Capponi, J.F.Smith, P.Ruotsalainen, C.Scholey, P.Rahkila, K.Auranen, L.Bianco, A.J.Boston, H.C.Boston, D.M.Cullen, X.Derkx, M.C.Drummond, T.Grahn, P.T.Greenlees, L.Grocutt, B.Hadinia, U.Jakobsson, D.T.Joss, R.Julin, S.Juutinen, M.Labiche, M.Leino, K.G.Leach, C.McPeake, K.F.Mulholland, P.Nieminen, D.O'Donnell, E.S.Paul, P.Peura, M.Sandzelius, J.Saren, B.Saygi, J.Sorri, S.Stolze, A.Thornthwaite, M.J.Taylor, J.Uusitalo

Direct observation of the ¹¹⁴Ba → ¹¹⁰Xe → ¹⁰⁶Te → ¹⁰²Sn triple α-decay chain using position and time correlations

RADIOACTIVITY ¹¹⁴Ba, ¹¹⁰Xe, ¹⁰⁶Te(α)[¹¹⁴Ba from ⁵⁸Ni(⁵⁸Ni, 2n), E=210 MeV using RITU recoil separator, ¹¹⁰Xe and ¹⁰⁶Te from descendents of ¹¹⁴Ba decay]; measured Eα, Iα, three successive α-decay correlated events, half-lives of decays of ¹¹⁴Ba, ¹¹⁰Xe and ¹⁰⁶Te, reaction cross section at K130 cyclotron facility of University of Jyvaskyla; deduced Q(α), Q(^12C), α-decay mode branching ratios, reduced α-decay widths.

doi: 10.1103/PhysRevC.94.024314
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2016CH14      Phys.Rev. C 93, 044318 (2016)

R.Chapman, Z.M.Wang, M.Bouhelal, F.Haas, X.Liang, F.Azaiez, B.R.Behera, M.Burns, E.Caurier, L.Corradi, D.Curien, A.N.Deacon, Zs.Dombradi, E.Farnea, E.Fioretto, A.Gadea, A.Hodsdon, F.Ibrahim, A.Jungclaus, K.Keyes, V.Kumar, S.Lunardi, N.Marginean, G.Montagnoli, D.R.Napoli, F.Nowacki, J.Ollier, D.O'Donnell, A.Papenberg, G.Pollarolo, M.-D.Salsac, F.Scarlassara, G.Simpson, J.F.Smith, K.M.Spohr, M.Stanoiu, A.M.Stefanini, S.Szilner, M.Trotta, D.Verney

Particle-core coupling in ³⁷S

NUCLEAR REACTIONS ²⁰⁸Pb(³⁶S, ³⁷S), E=215 MeV; measured yields of ^{34,35,36,37,38}S by using PRISMA magnetic spectrometer, Eγ, Iγ, (particle)γ-coin using CLARA array for γ-ray detection at INFN-Legnaro facility. ³⁷S; deduced levels, J, π, configurations, wave-function amplitudes. Comparison with previous experimental results, and with large-scale state-of-the-art shell-model calculations with the SDPF-U effective interaction using NATHAN code.

doi: 10.1103/PhysRevC.93.044318
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2016CH33      Phys.Rev. C 94, 024325 (2016)

R.Chapman, Z.M.Wang, M.Bouhelal, F.Haas, X.Liang, F.Azaiez, B.R.Behera, M.Burns, E.Caurier, L.Corradi, D.Curien, A.N.Deacon, Zs.Dombradi, E.Farnea, E.Fioretto, A.Gadea, A.Hodsdon, F.Ibrahim, A.Jungclaus, K.Keyes, V.Kumar, S.Lunardi, N.Marginean, G.Montagnoli, D.R.Napoli, F.Nowacki, J.Ollier, D.O'Donnell, A.Papenberg, G.Pollarolo, M.-D.Salsac, F.Scarlassara, J.F.Smith, K.M.Spohr, M.Stanoiu, A.M.Stefanini, S.Szilner, M.Trotta, D.Verney

First in-beam γ-ray study of the level structure of neutron-rich ³⁹S

NUCLEAR REACTIONS ²⁰⁸Pb(³⁶S, ³⁹S), E=215 MeV; measured Eγ, Iγ, particle spectra, (³⁹S ions)γ coin, mass spectrum of sulfur isotopes in coincidence with γ rays using the magnetic spectrometer PRISMA for particles and CLARA array for γ rays at INFN-Legnaro accelerator facility. ³⁹S; deduced levels, J, π, configurations. Comparison with shell model calculations using SDPF-U effective interaction, and with level structure in N=23 isotones ³⁷Si and ⁴¹Ar. Systematics of first 7/2- and 11/2- states in ^{31,33,35,37,39,41}S, ^{35,37,39,41,43,45}Ar.

doi: 10.1103/PhysRevC.94.024325
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2016DU13      Phys.Rev. C 93, 062801 (2016)

R.Dunlop, V.Bildstein, I.Dillmann, A.Jungclaus, C.E.Svensson, C.Andreoiu, G.C.Ball, N.Bernier, H.Bidaman, P.Boubel, C.Burbadge, R.Caballero-Folch, M.R.Dunlop, L.J.Evitts, F.Garcia, A.B.Garnsworthy, P.E.Garrett, G.Hackman, S.Hallam, J.Henderson, S.Ilyushkin, D.Kisliuk, R.Krucken, J.Lassen, R.Li, E.MacConnachie, A.D.MacLean, E.McGee, M.Moukaddam, B.Olaizola, E.Padilla-Rodal, J.Park, O.Paetkau, C.M.Petrache, J.L.Pore, A.J.Radich, P.Ruotsalainen, J.Smallcombe, J.K.Smith, S.L.Tabor, A.Teigelhofer, J.Turko, T.Zidar

Half-lives of neutron-rich ^128-130Cd

RADIOACTIVITY ^{128,129,129m,130}Cd(β^-)[from U(p, F), E=500 MeV]; measured Eγ, Iγ, Eβ, βγ-coin, T_1/2 using GRIFFIN spectrometer at TRIUMF-ISAC facility. Comparison between the experimental and calculated half-lives using DF3+CQRPA and RHB+RQRPA models, and with previous experimental results.

doi: 10.1103/PhysRevC.93.062801
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2016HO16      Phys.Rev. C 94, 034321 (2016)

D.Hodge, D.M.Cullen, M.J.Taylor, B.S.Nara Singh, L.S.Ferreira, E.Maglione, J.F.Smith, C.Scholey, P.Rahkila, T.Grahn, T.Braunroth, H.Badran, L.Capponi, A.Girka, P.T.Greenlees, R.Julin, J.Konki, M.Mallaburn, O.Nefodov, G.G.O'Neill, J.Pakarinen, P.Papadakis, J.Partanen, P.Ruotsalainen, M.Sandzelius, J.Saren, M.Smolen, J.Sorri, S.Stolze, J.Uusitalo

Deformation of the proton emitter ¹¹³CS from electromagnetic transition and proton-emission rates

NUCLEAR REACTIONS ⁵⁸Ni(⁵⁸Ni, 2np), E=230 MeV; measured Eγ, Iγ, proton-tagged γ spectra, Ep, Ip, half-life of ¹¹³Cs proton decay, level half-lives by recoil-decay-tagged differential-plunger combined with differential decay curve method (DDCM) using RITU separator, JUROGAM-II array and GREAT spectrometer at Jyvaskyla K130 cyclotron facility. Recoil-decay tagging method. ¹¹³Cs; deduced levels, J, B(E2), deformation of the proton-emitting ground state. Nonadiabatic quasiparticle model calculations.

doi: 10.1103/PhysRevC.94.034321
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2016MA40      Eur.Phys.J. A 52, 172 (2016)

H.Mach, A.Lindroth, E.Ruchowska, J.Kvasil, B.Fogelberg, K.Gulda, A.J.Aas, M.J.G.Borge, I.S.Grant, E.Hagebo, W.Kurcewicz, T.Martinez, B.Rubio, J.F.Smith, K.Steffensen, J.L.Tain, O.Tengblad, T.F.Thorsteinsen

On the enhanced E1 transitions in the K = 3/2 parity doublet band in ²²³Ra

RADIOACTIVITY ²²³Fr(β^-)[from ²²³Rn]; measured β-decay of (3/2)^- and (5/2)^- states (50 and 80 keV) Eγ, Iγ(t) using BaF2 crystal for timing and two Ge, Eβ, Iβ(t) using ΔE NE111A, βγ-coin; deduced time-delayed βγ(t) spectrum, T_1/2, B(E1), B(E2), B(M1) for K=3/2 band states below 250 keV, intrinsic electric dipole moment D₀; calculated T_1/2, γ transition probabilities, B(E1), B(E2), B(M1), average electric dipole moment for ^223,224Ra (and compared with available data for Ra isotopes), quadrupole and octupole vibration energies in ^222,224Ra, structure of intrinsic states.

doi: 10.1140/epja/i2016-16172-4
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2016PA28      Phys.Rev. C 94, 014307 (2016)

E.Parr, J.F.Smith, P.T.Greenlees, M.Smolen, P.Papadakis, K.Auranen, R.Chapman, D.M.Cullen, T.Grahn, L.Grocutt, A.Herzan, R.-D.Herzberg, D.Hodge, U.Jakobsson, R.Julin, S.Juutinen, J.Konki, M.Leino, C.McPeake, D.Mengoni, A.K.Mistry, K.F.Mulholland, G.G.O'Neill, J.Pakarinen, J.Partanen, P.Peura, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, M.Scheck, C.Scholey, J.Sorri, S.Stolze, M.J.Taylor, J.Uusitalo

Identification of the J^π = 1^- state in ²¹⁸Ra populated via α decay of ²²²Th

RADIOACTIVITY ²²²Th(α)[from ²⁰⁸Pb(¹⁸O, 4n), E=95 MeV using RITU separator at Jyvaskyla accelerator facility]; measured Eγ, Iγ, Eα, Iα, x rays, αγ-coin, (recoil)α and (recoil)αα correlations, half-life of ²²²Th decay using two double-sided silicon-strip detectors (DSSDs) for particles and HPGe clover detectors for γ rays. ²¹⁸Ra; deduced levels, J, π, 1- state, α branching ratios, α hindrance factors. ²¹³Rn, ²¹⁹Ra, ²²¹Th(α); observed αγ-coin. Systematics of level energies and α hindrance factors for 1- and 3- states in ^218,220,222Rn, ^{218,220,222,224,226,228}Ra, ^{224,226,228,230,232}Th. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.94.014307
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2016RO02      Phys.Rev. C 93, 014309 (2016)

O.J.Roberts, C.R.Nita, A.M.Bruce, N.Marginean, D.Bucurescu, D.Deleanu, D.Filipescu, N.M.Florea, I.Gheorghe, D.Ghita, T.Glodariu, R.Lica, R.Marginean, C.Mihai, A.Negret, T.Sava, L.Stroe, R.Suvaila, S.Toma, T.Alharbi, T.Alexander, S.Aydin, B.A.Brown, F.Browne, R.J.Carroll, K.Mulholland, Zs.Podolyak, P.H.Regan, J.F.Smith, M.Smolen, C.M.Townsley

E3 and M2 transition strengths in ²⁰⁹₈₃Bi

NUCLEAR REACTIONS ²⁰⁸Pb(⁷Li, 2nα), E=32 MeV; measured Eγ, Iγ, γγ-coin, level half-lives by γγ(t) fast timing technique, γ(θ) using RoSPHERE array at NIPNE, Bucharest accelerator facility. ²⁰⁹Bi; deduced levels, J, π, multipolarity, E3/M2 mixing ratio, B(M2), B(E3). Comparison of transition rates with theoretical calculations using shell model and theory of finite Fermi systems (FFS).

doi: 10.1103/PhysRevC.93.014309
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2016SM03      Nucl.Phys. A955, 27 (2016)

J.K.Smith, T.Baumann, D.Bazin, J.Brown, P.A.DeYoung, N.Frank, M.D.Jones, Z.Kohley, B.Luther, B.Marks, A.Spyrou, S.L.Stephenson, M.Thoennessen, A.Volya

Neutron correlations in the decay of the first excited state of ¹¹Li

NUCLEAR REACTIONS ⁹Be(¹³B, ¹¹Li), E=71 MeV/nucleon; measured charged fragments using Sweeper high-field dipole magnet, En, In using MoNA-LISA array of plastic scintillators; deduced unnormalized three- and two-body ¹¹Li-decay energy spectrum, ¹⁰Li resonances energy, width; calculated, simulated decay energy spectra, coincident energy spectra.

doi: 10.1016/j.nuclphysa.2016.05.023
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2016SZ03      Phys.Rev. C 94, 054314 (2016)

S.V.Szwec, B.P.Kay, T.E.Cocolios, J.P.Entwisle, S.J.Freeman, L.P.Gaffney, V.Guimaraes, F.Hammache, P.P.McKee, E.Parr, C.Portail, J.P.Schiffer, N.de Sereville, D.K.Sharp, J.F.Smith, I.Stefan

Rearrangement of valence neutrons in the neutrinoless double-β decay of ¹³⁶Xe

NUCLEAR REACTIONS ¹³⁴Ba(d, p), E=15 MeV; ¹³⁴Ba(α, ³He), E=40.1 MeV; ¹³⁶Ba(p, d), E=23 MeV; ¹³⁴Ba(³He, α), E=32.0 MeV; measured outgoing proton, deuteron, ³He and α spectra, σ(θ) using an Enge split-pole spectrometer at the ALTO Tandem accelerator at IPN-Orsay. DWBA analysis using PTOLEMY code. ¹³⁵Ba; deduced levels, J, π. ¹³⁶Xe, ^134,136Ba; deduced ground-state neutron occupancies. Comparisons with theoretical calculations using various nuclear-structure models. Relevance to initial and final state in the 0νββ decay mode of ¹³⁶Xe.

doi: 10.1103/PhysRevC.94.054314
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2016TA23      Phys.Rev. C 94, 064304 (2016)

S.K.Tandel, P.Chowdhury, F.G.Kondev, R.V.F.Janssens, T.L.Khoo, M.P.Carpenter, T.Lauritsen, C.J.Lister, D.Seweryniak, S.Zhu, A.Deacon, S.J.Freeman, N.J.Hammond, G.D.Jones, E.F.Moore, J.F.Smith

Configurations and decay hindrances of high-K states in ¹⁸⁰Hf

NUCLEAR REACTIONS ¹⁸⁰Hf(²⁰⁷Pb, X), E=1.4 GeV; measured Eγ, Iγ, γγ-coin, delayed γ, level and isomer half-lives by γγ(t) and centroid-shift method using Gammasphere array and heavy-ion detector CHICO at ATLAS-ANL facility. ¹⁸⁰Hf; deduced high-spin levels, J, π, 2- and 4-qp states, multi-quasiparticle high-K states, rotational bands, reduced hindrances for E1, E2, E3, M1 and M2 transitions from isomers, (g_K-g_R)/Q₀ as function of Jπ, configurations. Comparison with theoretical calculations using Lipkin-Nogami approach for pairing, with blocking included. Systematics of high-K states in ¹⁸⁰Hf, ^180,182W, and ^182,184Os.

doi: 10.1103/PhysRevC.94.064304
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2016VO04      Phys.Rev. C 93, 054325 (2016)

A.Vogt, B.Birkenbach, P.Reiter, A.Blazhev, M.Siciliano, J.J.Valiente-Dobon, C.Wheldon, D.Bazzacco, M.Bowry, A.Bracco, B.Bruyneel, R.S.Chakrawarthy, R.Chapman, D.Cline, L.Corradi, F.C.L.Crespi, M.Cromaz, G.de Angelis, J.Eberth, P.Fallon, E.Farnea, E.Fioretto, S.J.Freeman, A.Gadea, K.Geibel, W.Gelletly, A.Gengelbach, A.Giaz, A.Gorgen, A.Gottardo, A.B.Hayes, H.Hess, H.Hua, P.R.John, J.Jolie, A.Jungclaus, W.Korten, I.Y.Lee, S.Leoni, X.Liang, S.Lunardi, A.O.Macchiavelli, R.Menegazzo, D.Mengoni, C.Michelagnoli, T.Mijatovic, G.Montagnoli, D.Montanari, D.Napoli, C.J.Pearson, L.Pellegri, Zs.Podolyak, G.Pollarolo, A.Pullia, F.Radeck, F.Recchia, P.H.Regan, E.Sahin, F.Scarlassara, G.Sletten, J.F.Smith, P.-A.Soderstrom, A.M.Stefanini, T.Steinbach, O.Stezowski, S.Szilner, B.Szpak, R.Teng, C.Ur, V.Vandone, D.Ward, D.D.Warner, A.Wiens, C.Y.Wu

High-spin structure of ¹³⁴Xe

NUCLEAR REACTIONS ¹⁹⁸Pt(¹³⁶Xe, ¹³⁴Xe), E=850 MeV; ²⁰⁸Pb(¹³⁶Xe, ¹³⁴Xe), E=930 MeV; ²³⁸U(¹³⁶Xe, ¹³⁴Xe), E=1 GeV; measured Eγ, Iγ, γγ-coin, γ(θ), time-of-flight total kinetic energy loss (TKEL) using Gammasphere and Chico arrays at LBNL cyclotron facility for the ¹⁹⁸Pt+¹³⁶Xe reaction, and PRISMA spectrometer, Dante and AGATA arrays at PIAVE+ALPI accelerator complex for the ²⁰⁸Pb+¹³⁶Xe and ²³⁸U+¹³⁶Xe reactions. ¹³⁴Xe; deduced high-spin levels, J, π, multipolarity, configurations. Comparison with shell-model calculations using the jj55 effective interaction.

doi: 10.1103/PhysRevC.93.054325
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2015CH56      Phys.Rev. C 92, 044308 (2015)

R.Chapman, A.Hodsdon, M.Bouhelal, F.Haas, X.Liang, F.Azaiez, Z.M.Wang, B.R.Behera, M.Burns, E.Caurier, L.Corradi, D.Curien, A.N.Deacon, Zs.Dombradi, E.Farnea, E.Fioretto, A.Gadea, F.Ibrahim, A.Jungclaus, K.Keyes, V.Kumar, S.Lunardi, N.Marginean, G.Montagnoli, D.R.Napoli, F.Nowacki, J.Ollier, D.O'Donnell, A.Papenberg, G.Pollarolo, M.-D.Salsac, F.Scarlassara, J.F.Smith, K.M.Spohr, M.Stanoiu, A.M.Stefanini, S.Szilner, M.Trotta, D.Verney

Spectroscopy of neutron-rich ^{34, 35, 36, 37, 38}P populated in binary grazing reactions

NUCLEAR REACTIONS ²⁰⁸Pb(³⁶S, X)³²P/³³P/³⁴P/³⁵P/³⁶P/³⁷P/³⁸P, E=215 MeV; measured mass spectrum, Eγ, Iγ, (reaction products)γ-, γγ-coin using PRISMA-CLARA apparatus at INFN-LNL-Legnaro accelerator facility. ^{34,35,36,37,38}P; deduced levels, J, π, configurations. Comparison with previous experimental studies, and with shell-model calculations.

doi: 10.1103/PhysRevC.92.044308
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2015GA19      Phys.Rev. C 91, 064313 (2015)

L.P.Gaffney, A.P.Robinson, D.G.Jenkins, A.N.Andreyev, M.Bender, A.Blazhev, N.Bree, B.Bruyneel, P.A.Butler, T.E.Cocolios, T.Davinson, A.N.Deacon, H.De Witte, D.DiJulio, J.Diriken, A.Ekstrom, Ch.Fransen, S.J.Freeman, K.Geibel, T.Grahn, B.Hadinia, M.Hass, P.-H.Heenen, H.Hess, M.Huyse, U.Jakobsson, N.Kesteloot, J.Konki, Th.Kroll, V.Kumar, O.Ivanov, S.Martin-Haugh, D.Mucher, R.Orlandi, J.Pakarinen, A.Petts, P.Peura, P.Rahkila, P.Reiter, M.Scheck, M.Seidlitz, K.Singh, J.F.Smith, J.Van de Walle, P.Van Duppen, D.Voulot, R.Wadsworth, N.Warr, F.Wenander, K.Wimmer, K.Wrzosek-Lipska, M.Zielinska

Collectivity in the light radon nuclei measured directly via Coulomb excitation

NUCLEAR REACTIONS ¹⁰⁹Ag, ¹²⁰Sn(²⁰²Rn, ²⁰²Rn'), (²⁰⁴Rn, ²⁰⁴Rn'), E=2.845, 2.90, 2.28 MeV, [secondary ^202,204Rn beams from U(p, X), E=1.4 GeV from Proton Synchrotron Booster, REX-TRAP, REX-EBIS and REX-LINAC at ISOLDE-CERN facility]; measured scattered heavy ion spectra, Eγ, Iγ, (particle)γ-coin using Miniball array. Coulomb excitation. ^202,204Rn; deduced levels, E2 matrix elements, spectroscopic quadrupole moment, B(E2). GOSIA analysis of experimental data for ^202,204Rn and ¹⁰⁹Ag, ¹²⁰Sn from Coulomb excitation. Comparison with state-of-the-art beyond-mean-field model calculations. Systematics of energies and transition quadrupole moments of yrast states, B(E2) and quadrupole deformation for first 2+ states in ^{198,200,202,204,206,208,210,212}Rn.

doi: 10.1103/PhysRevC.91.064313
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2015JO05      Phys.Rev. C 91, 044312 (2015)

M.D.Jones, Z.Kohley, T.Baumann, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, R.A.Haring-Kaye, A.N.Kuchera, B.Luther, S.Mosby, J.K.Smith, J.Snyder, A.Spyrou, S.L.Stephenson, M.Thoennessen

Further insights into the reaction ¹⁴Be(CH₂, X)¹⁰He

NUCLEAR REACTIONS ²H(¹⁴Be, ¹⁰He), (¹⁴Be, ¹²He), E=59 MeV/nucleon, [¹⁴Be secondary beam from ⁹Be(¹⁸O, X), E=120 MeV/nucleon primary reaction using A1900 fragment separator]; measured particle spectra by ΔE-E detectors and neutron spectra by MONA array at NSCL-MSU facility; analyzed decay energy spectra and multiplicity distributions for ⁸He+n, ⁸He+2n ⁸He+4n, and ⁸He+2n with α removal. ¹⁰He; deduced resonance, no evidence for initial state effects based on the halo structure of the initial ¹⁴Be assuming a direct α-particle removal reaction. ¹²He; deduced no evidence for the existence of a low-lying (≤1 MeV) resonance in ¹²He.

doi: 10.1103/PhysRevC.91.044312
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2015JO14      Phys.Rev. C 92, 051306 (2015)

M.D.Jones, N.Frank, T.Baumann, J.Brett, J.Bullaro, P.A.DeYoung, J.E.Finck, K.Hammerton, J.Hinnefeld, Z.Kohley, A.N.Kuchera, J.Pereira, A.Rabeh, W.F.Rogers, J.K.Smith, A.Spyrou, S.L.Stephenson, K.Stiefel, M.Tuttle-Timm, R.G.T.Zegers, M.Thoennessen

Two-neutron sequential decay of ²⁴O

NUCLEAR REACTIONS ²H(²⁴O, 2n²²O), E=83.4 MeV/nucleon, [²⁴O secondary beam from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon primary reaction at NSCL-MSU]; measured charged-particle spectra using position- and energy-sensitive detectors, E(n) and I(n) using MONA-LISA array, three-body decay energy, angular correlations. ²⁴O; deduced level, resonance, l-transfer, width, evidence for two-neutron sequential decay from resonant state. ²³O; deduced intermediate level, J, π through one-neutron decay of ²⁴O resonant state. Comparison with di-neutron and phase-space model calculations for the three-body breakup.

doi: 10.1103/PhysRevC.92.051306
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2015KO08      Phys.Rev. C 91, 034323 (2015)

Z.Kohley, T.Baumann, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, B.Luther, E.Lunderberg, M.Jones, S.Mosby, J.K.Smith, A.Spyrou, M.Thoennessen

Three-body correlations in the ground-state decay of ²⁶O

NUCLEAR REACTIONS ⁹Be(²⁷F, ²⁶O), E=82 MeV/nucleon, [²⁷F secondary beam produced from projectile fragmentation of a 140 MeV/nucleon ⁴⁸Ca primary beam]; measured (²⁴O)nn-triple coin, three-body decay energy and angular correlations using MoNA-Sweeper setup at NSCL-MSU; deduced invariant mass and three-body correlations from the ²⁶O ground-state resonance decay. Comparison with Monte-Carlo simulations using a phase-space, model, dineutron model, and three-body decay model. ²⁶O; deduced 1σ upper limit of the ground-state resonance energy of ²⁶O.

doi: 10.1103/PhysRevC.91.034323
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2015KU04      Phys.Rev. C 91, 017304 (2015)

A.N.Kuchera, A.Spyrou, J.K.Smith, T.Baumann, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, M.D.Jones, Z.Kohley, S.Mosby, W.A.Peters, M.Thoennessen

Search for unbound ¹⁵Be states in the 3n+ ¹²Be channel

NUCLEAR REACTIONS ⁹Be(¹⁷C, ¹⁵Be), E=55 MeV/nucleon, [¹⁷C secondary beam from ⁹Be(²²Ne, X) primary reaction]; measured particle spectra, (¹²Be)n-coin using MONA array at NSCL-MSU facility; reconstructed two-, three-, and four-body decay energies of the ¹²Be+ neutron system using invariant mass spectroscopy. ¹⁵Be; search for predicted unbound 3/2+ level proved inconclusive. In the best fit analysis, ¹⁵Be g.s. is unbound with respect to ¹²Be.

doi: 10.1103/PhysRevC.91.017304
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2015MA62      Phys.Rev. C 92, 054320 (2015)

B.R.Marks, P.A.DeYoung, J.K.Smith, T.Baumann, J.Brown, N.Frank, J.Hinnefeld, M.Hoffman, M.D.Jones, Z.Kohley, A.N.Kuchera, B.Luther, A.Spyrou, S.Stephenson, C.Sullivan, M.Thoennessen, N.Viscariello, S.J.Williams

Population of ¹³Be in a nucleon exchange reaction

NUCLEAR REACTIONS ⁹Be(¹³B, ¹³Be), E=71 MeV/nucleon, [secondary ¹³B beam from ⁹Be(¹⁸O, X), E=120 MeV/nucleon primary reaction]; measured E(n), I(n) from the decay of ¹³Be into ¹²B+n, decay energy spectrum reconstructed by invariant-mass method using A1900 fragment separator and MoNA-LISA array at NSCL-MSU. Nucleon (-1p, +1n) exchange reaction. ¹³Be; deduced levels, resonances, J, π, widths, relative populations. Comparison with previous experimental data.

doi: 10.1103/PhysRevC.92.054320
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2015OR01      Phys.Lett. B 740, 298 (2015)

R.Orlandi, D.Mucher, R.Raabe, A.Jungclaus, S.D.Pain, V.Bildstein, R.Chapman, G.de Angelis, J.G.Johansen, P.Van Duppen, A.N.Andreyev, S.Bottoni, T.E.Cocolios, H.De Witte, J.Diriken, J.Elseviers, F.Flavigny, L.P.Gaffney, R.Gernhauser, A.Gottardo, M.Huyse, A.Illana, J.Konki, T.Kroll, R.Krucken, J.F.W.Lane, V.Liberati, B.Marsh, K.Nowak, F.Nowacki, J.Pakarinen, E.Rapisarda, F.Recchia, P.Reiter, T.Roger, E.Sahin, M.Seidlitz, K.Sieja, J.F.Smith, J.J.Valiente Dobon, M.von Schmid, D.Voulot, N.Warr, F.K.Wenander, K.Wimmer

Single-neutron orbits near ⁷⁸Ni: Spectroscopy of the N=49 isotope ⁷⁹Zn

NUCLEAR REACTIONS ²H(⁷⁸Zn, p), E=2.83 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced partial level scheme, energy levels, J, π, σ(θ). Comparison with large-scale shell-model calculations.

doi: 10.1016/j.physletb.2014.12.006
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2015RO16      Phys.Rev. C 92, 034316 (2015)

W.F.Rogers, S.Garrett, A.Grovom, R.E.Anthony, A.Aulie, A.Barker, T.Baumann, J.J.Brett, J.Brown, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, A.Hamann, R.A.Haring-Kaye, J.Hinnefeld, A.R.Howe, N.T.Islam, M.D.Jones, A.N.Kuchera, J.Kwiatkowski, E.M.Lunderberg, B.Luther, D.A.Meyer, S.Mosby, A.Palmisano, R.Parkhurst, A.Peters, J.Smith, J.Snyder, A.Spyrou, S.L.Stephenson, M.Strongman, B.Sutherland, N.E.Taylor, M.Thoennessen

Unbound excited states of the N=16 closed shell nucleus ²⁴O

NUCLEAR REACTIONS ⁹Be(²⁶F, ²⁴O), E=76 MeV/nucleon, [secondary ²⁶F beam from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon primary reaction]; measured charged-particle spectra, E(n), I(n), (²³O)n-coin using MONA-LISA array at NSCL-MSU. ²⁴O; deduced decay energy spectrum, levels, J, π, difference between the first 2+ and 1+ states. Comparison with previous experimental results and theoretical calculations.

doi: 10.1103/PhysRevC.92.034316
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Note: The following list of authors and aliases matches the search parameter J.Smith: , J.A.SMITH, J.D.SMITH, J.F.SMITH, J.H.SMITH, J.K.SMITH, J.M.SMITH, J.R.SMITH, J.W.SMITH