NSR Query Results
Output year order : Descending NSR database version of April 24, 2024. Search: Author = C.R.Hoffmann Found 150 matches. Showing 1 to 100. [Next]2024HE01 Phys.Rev. C 109, 014327 (2024) J.Heery, J.Henderson, C.R.Hoffman, A.M.Hill, T.Beck, C.Cousins, P.Farris, A.Gade, S.A.Gillespie, J.D.Holt, B.Hu, H.Iwasaki, S.Kisyov, A.N.Kuchera, B.Longfellow, C.Muller-Gatermann, A.Poves, E.Rubino, R.Russell, R.Salinas, A.Sanchez, D.Weisshaar, C.Y.Wu, J.Wu Suppressed electric quadrupole collectivity in 32Si
doi: 10.1103/PhysRevC.109.014327
2023BE06 Phys.Rev.Lett. 130, 202501 (2023) S.A.Bennett, K.Garrett, D.K.Sharp, S.J.Freeman, A.G.Smith, T.J.Wright, B.P.Kay, T.L.Tang, I.A.Tolstukhin, Y.Ayyad, J.Chen, P.J.Davies, A.Dolan, L.P.Gaffney, A.Heinz, C.R.Hoffman, C.Muller-Gatermann, R.D.Page, G.L.Wilson Direct Determination of Fission-Barrier Heights Using Light-Ion Transfer in Inverse Kinematics NUCLEAR REACTIONS 2H(238U, F), E=8.6 MeV/nucleon; measured reaction products. 239U; deduced fission probability, fission barrier height. Comparison with GEF simulations. The ATLAS accelerator.
doi: 10.1103/PhysRevLett.130.202501
2023HO06 Phys.Rev. C 107, 064311 (2023) C.R.Hoffman, R.S.Lubna, E.Rubino, S.L.Tabor, K.Auranen, P.C.Bender, C.M.Campbell, M.P.Carpenter, J.Chen, M.Gott, J.P.Greene, D.E.M.Hoff, T.Huang, H.Iwasaki, F.G.Kondev, T.Lauritsen, B.Longfellow, C.Santamaria, D.Seweryniak, T.L.Tang, G.L.Wilson, J.Wu, S.Zhu Experimental study of the 38S excited level scheme NUCLEAR REACTIONS 18O(22Ne, 2p)38S, E=48.5 MeV; measured recoils, Eγ, Iγ γγ-coin, γγ(θ) (recoils)γ-coin. 38S; deduced levels, J, π, δ, ratio of the angular yields, configurations, occupancy numbers. Machine-learning techniques used in the analysis of the data. Comparison to shell-model calculations with FSU interaction. Systematics of yrast states properties for 36Si, 38S, 40Ar, 42Ca. GRETINA array consisting of 12 HPGe modules coupled with Fragment Mass Analyzer (FMA) at Argonne Tandem Linear Accelerator System (ATLAS) facility (ANL).
doi: 10.1103/PhysRevC.107.064311
2023JA08 Phys.Rev.Lett. 845, 112701 (2023) H.Jayatissa, M.L.Avila, K.E.Rehm, P.Mohr, Z.Meisel, J.Chen, C.R.Hoffman, J.Liang, C.Muller-Gatermann, D.Neto, W.J.Ong, A.Psaltis, D.Santiago-Gonzalez, T.L.Tang, C.Ugalde, G.Wilson Study of the 22Mg Waiting Point Relevant for X-Ray Burst Nucleosynthesis via the 22Mg(α, p)25Al Reaction NUCLEAR REACTIONS 4He(22Mg, p), E=74 MeV; measured reaction products, Ep, Ip; deduced σ, reaction rates. Comparison with calculations. MUlti-Sampling Ionization Chamber (MUSIC) detector, the Argonne Tandem Linac Accelerator System (ATLAS) at Argonne National Laboratory.
doi: 10.1103/PhysRevLett.131.112701
2023JI11 Phys.Rev. C 108, L051605 (2023) C.L.Jiang, W.F.Henning, C.R.Hoffman, B.P.Kay, N.Watwood Unexpected character of the heavy-ion fusion excitation function and the compound channel effect
doi: 10.1103/PhysRevC.108.L051605
2023KO15 Nature(London) 620, 965 (2023) Y.Kondo, N.L.Achouri, H.Al Falou, L.Atar, T.Aumann, H.Baba, K.Boretzky, C.Caesar, D.Calvet, H.Chae, N.Chiga, A.Corsi, F.Delaunay, A.Delbart, Q.Deshayes, Zs.Dombradi, C.A.Douma, A.Ekstrom, Z.Elekes, C.Forssen, I.Gasparic, J.-M.Gheller, J.Gibelin, A.Gillibert, G.Hagen, M.N.Harakeh, A.Hirayama, C.R.Hoffman, M.Holl, A.Horvat, A.Horvath, J.W.Hwang, T.Isobe, W.G.Jiang, J.Kahlbow, N.Kalantar-Nayestanaki, S.Kawase, S.Kim, K.Kisamori, T.Kobayashi, D.Korper, S.Koyama, I.Kuti, V.Lapoux, S.Lindberg, F.M.Marques, S.Masuoka, J.Mayer, K.Miki, T.Murakami, M.Najafi, T.Nakamura, K.Nakano, N.Nakatsuka, T.Nilsson, A.Obertelli, K.Ogata, F.de Oliveira Santos, N.A.Orr, H.Otsu, T.Otsuka, T.Ozaki, V.Panin, T.Papenbrock, S.Paschalis, A.Revel, D.Rossi, A.T.Saito, T.Y.Saito, M.Sasano, H.Sato, Y.Satou, H.Scheit, F.Schindler, P.Schrock, M.Shikata, N.Shimizu, Y.Shimizu, H.Simon, D.Sohler, O.Sorlin, L.Stuhl, Z.H.Sun, S.Takeuchi, M.Tanaka, M.Thoennessen, H.Tornqvist, Y.Togano, T.Tomai, J.Tscheuschner, J.Tsubota, N.Tsunoda, T.Uesaka, Y.Utsuno, I.Vernon, H.Wang, Z.Yang, M.Yasuda, K.Yoneda, S.Yoshida First observation of 28O NUCLEAR REACTIONS H(29F, X)27O/28O, E=235 MeV/nucleon; measured reaction products; deduced yields. The hydrogen target was surrounded by the MINOS Time Projection Chamber, SAMURAI spectrometer, RIKEN RI Beam Factory. RADIOACTIVITY 28O(4n), 27O(3n); measured decay products, En, In; deduced decay energy spectra and schemes from the measured momenta using the invariant-mass technique, resonance parameters. Comparison with the large-scale shell-model calculations using the new chiral effective field theory (EEdf3) interaction.
doi: 10.1038/s41586-023-06352-6
2023RU06 Phys.Rev. C 108, 064311 (2023) R.Russell, J.Heery, J.Henderson, C.R.Hoffman, T.Beck, C.Cousins, P.Farris, A.Gade, S.A.Gillespie, A.Hill, H.Iwasaki, S.Kisyov, A.N.Kuchera, B.Longfellow, C.Muller-Gatermann, K.Nomura, E.Rubino, R.Salinas, A.Sanchez, D.Weisshaar, C.Y.Wu, J.Wu Coulomb excitation of 96Mo
doi: 10.1103/PhysRevC.108.064311
2023WA18 Phys.Lett. B 843, 138038 (2023) H.Wang, M.Yasuda, Y.Kondo, T.Nakamura, J.A.Tostevin, K.Ogata, T.Otsuka, A.Poves, N.Shimizu, K.Yoshida, N.L.Achouri, H.Al Falou, L.Atar, T.Aumann, H.Baba, K.Boretzky, C.Caesar, D.Calvet, H.Chae, N.Chiga, A.Corsi, H.L.Crawford, F.Delaunay, A.Delbart, Q.Deshayes, Zs.Dombradi, C.Douma, Z.Elekes, P.Fallon, I.Gasparic, J.-M.Gheller, J.Gibelin, A.Gillibert, M.N.Harakeh, A.Hirayama, C.R.Hoffman, M.Holl, A.Horvat, A.Horvath, J.W.Hwang, T.Isobe, J.Kahlbow, N.Kalantar-Nayestanaki, S.Kawase, S.Kim, K.Kisamori, T.Kobayashi, D.Korper, S.Koyama, I.Kuti, V.Lapoux, S.Lindberg, F.M.Marques, S.Masuoka, J.Mayer, K.Miki, T.Murakami, M.A.Najafi, K.Nakano, N.Nakatsuka, T.Nilsson, A.Obertelli, N.A.Orr, H.Otsu, T.Ozaki, V.Panin, S.Paschalis, A.Revel, D.Rossi, A.T.Saito, T.Saito, M.Sasano, H.Sato, Y.Satou, H.Scheit, F.Schindler, P.Schrock, M.Shikata, Y.Shimizu, H.Simon, D.Sohler, O.Sorlin, L.Stuhl, S.Takeuchi, M.Tanaka, M.Thoennessen, H.Tornqvist, Y.Togano, T.Tomai, J.Tscheuschner, J.Tsubota, T.Uesaka, Z.Yang, K.Yoneda Intruder configurations in 29Ne at the transition into the island of inversion: Detailed structure study of 28Ne NUCLEAR REACTIONS 1H(29Ne, np)28Ne, E=240 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies and relative intensities, partial level scheme, J, π, one-neutron removal σ, parallel momentum distributions. Comparison with available data. The MINOS target was surrounded by the DALI2 array, the Radioactive Isotope Beam Factory (RIBF), operated by the RIKEN Nishina Center and the Center for Nuclear Study, University of Tokyo.
doi: 10.1016/j.physletb.2023.138038
2022AY02 Phys.Rev. C 105, 054315 (2022) A.D.Ayangeakaa, N.Sensharma, M.Fulghieri, R.V.F.Janssens, Q.B.Chen, S.Zhu, M.Alcorta, M.P.Carpenter, P.Chowdhury, A.Gade, C.R.Hoffman, F.G.Kondev, T.Lauritsen, E.A.McCutchan, A.M.Rogers, D.Seweryniak Single-particle and collective excitations in 66Zn NUCLEAR REACTIONS 26Mg(48Ca, 4nα), E=275, 290, 320 MeV; measured Eγ, Iγ, γ(θ), γγ-coin. 66Zn; deduced levels, J, π, angular correlation ratios, experimental angular distribution coefficients, δ, rotational bands structure, high-spin states. Comparison to spherical shell-model calculations using the jj44b and JUN45 effective interactions. Experimental data on rotational band is compared to the calculations made within configuration-fixed constrained covariant density functional theory (CDFT) and the quantum particle rotor model (PRM) formalism. Systematics for superderformed bands in 60Zn, 66Zn, 68Zn, 68Ge. Gammasphere array with 101 detectors in conjunction with the fragment mass analyzer (FMA) and a microchannel plate (MCP) detector at ATLAS accelerator (ANL).
doi: 10.1103/PhysRevC.105.054315
2022CH55 Phys.Rev. C 106, 064312 (2022) J.Chen, B.P.Kay, T.L.Tang, I.A.Tolstukhin, C.R.Hoffman, H.Li, P.Yin, X.Zhao, P.Maris, J.P.Vary, G.Li, J.L.Lou, M.L.Avila, Y.Ayyad, S.Bennett, D.Bazin, J.A.Clark, S.J.Freeman, H.Jayatissa, C.Muller-Gatermann, A.Munoz-Ramos, D.Santiago-Gonzalez, D.K.Sharp, A.H.Wuosmaa, C.X.Yuan Probing the quadrupole transition strength of 15C via deuteron inelastic scattering NUCLEAR REACTIONS 1H(15C, p), 2H(15C, d);E=7.1 MeV/nucleon; measured reaction products, Ep, Ip, deuteron spectrum; deduced elastic and inelastic scattering σ(θ). 15C; deduced B(E2), proton quadrupole matrix element, ratio of neutron and proton matrix elements, proton deformation length, core polarization parameters, neutron effective charge; calculated levels, J, π, B(E2), magnetic dipole moments. Comparison to data on 17O and other C isotopes. Ab initio no-core configuration interaction (NCCI) calculations with Daejeon16 interaction. HELIOS spectrometer at ATLAS in-flight facility (Argonne National Laboratory).
doi: 10.1103/PhysRevC.106.064312
2022HA01 Phys.Rev. C 105, 014301 (2022) D.J.Hartley, F.G.Kondev, M.P.Carpenter, R.V.F.Janssens, M.A.Riley, K.Villafana, K.Auranen, A.D.Ayangeakaa, J.S.Baron, A.J.Boston, J.A.Clark, J.P.Greene, J.Heery, C.R.Hoffman, T.Lauritsen, J.Li, D.Little, E.S.Paul, G.Savard, D.Seweryniak, J.Simpson, S.Stolze, G.L.Wilson, J.Wu, S.Zhu νi13/2 structures in 155Sm and 159Gd: Supporting evidence of a Z=60 deformed subshell gap NUCLEAR REACTIONS 154Sm(160Gd, n), E=1000 MeV from the ATLAS facility of the Argonne National Laboratory. Measured Eγ, Iγ, γγ-coin using Gammasphere array with 73 Compton-suppressed HPGe detectors. 155Sm, 159Gd; deduced high-spin levels, J, π, νi13/2 bands, with the two signature partners, alignments and signature splitting. Discussed systematics of νi13/2 structures in N=91, 93, 95, and 97 isotopes: 153,155,157Sm, 155,157,159Gd, 157,159,161Dy, 151Ce, 153,155Nd, 161,163Er, 163,165Yb.
doi: 10.1103/PhysRevC.105.014301
2022HO08 Nucl.Instrum.Methods Phys.Res. A1032, 166612 (2022) C.R.Hoffman, T.L.Tang, M.Avila, Y.Ayyad, K.W.Brown, J.Chen, K.A.Chipps, H.Jayatissa, B.P.Kay, C.Muller-Gatermann, H.J.Ong, J.Song, G.L.Wilson In-flight production of an isomeric beam of 16N NUCLEAR REACTIONS 2H(15N, p)16N, E=8.1, 13.5 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced isomer fraction. Argonne Tandem Linear Accelerator System (ATLAS) in-flight system.
doi: 10.1016/j.nima.2022.166612
2022JA08 Phys.Rev. C 105, L042802 (2022) H.Jayatissa, M.L.Avila, K.E.Rehm, R.Talwar, P.Mohr, K.Auranen, J.Chen, D.A.Gorelov, C.R.Hoffman, C.L.Jiang, B.P.Kay, S.A.Kuvin, D.Santiago-Gonzalez First direct measurement of the 13N(α, p)16O reaction relevant for core-collapse supernovae nucleosynthesis NUCLEAR REACTIONS 4He(13N, p), E=34.6 MeV; measured energies and yields of reaction products; deduced σ(Ε) in the range E(cm)=3.26–6.02 MeV, astrophysical S-factor. 4He(13N, p), T=0.8-10.0 GK; deduced astrophysical reaction rates. Comparison to other experimental data, TALYS calculations and data from REACLIB. MUlti-Sampling Ionization Chamber (MUSIC) detector filled with He-Kr gas mixture at ATLAS (ANL).
doi: 10.1103/PhysRevC.105.L042802
2022KA36 Phys.Rev.Lett. 129, 152501 (2022) B.P.Kay, T.L.Tang, I.A.Tolstukhin, G.B.Roderick, A.J.Mitchell, Y.Ayyad, S.A.Bennett, J.Chen, K.A.Chipps, H.L.Crawford, S.J.Freeman, K.Garrett, M.D.Gott, M.R.Hall, C.R.Hoffman, H.Jayatissa, A.O.Macchiavelli, P.T.MacGregor, D.K.Sharp, G.L.Wilson Quenching of Single-Particle Strength in A = 15 Nuclei NUCLEAR REACTIONS 2H(14C, p), (14N, p), E=10 MeV/nucleon; measured reaction products, Ep, Ip. 15C, 15N; deduced σ(θ), Q-value, the difference between the neutron and proton separation energies, degree of quenching. Comparison with the independent single-particle and shell model calculations. The HELIOS spectrometer at the ATLAS facility at Argonne National Laboratory.
doi: 10.1103/PhysRevLett.129.152501
2022LI54 Phys.Rev. C 106, 044313 (2022) D.Little, A.D.Ayangeakaa, R.V.F.Janssens, S.Zhu, Y.Tsunoda, T.Otsuka, B.A.Brown, M.P.Carpenter, A.Gade, D.Rhodes, C.R.Hoffman, F.G.Kondev, T.Lauritsen, D.Seweryniak, J.Wu, J.Henderson, C.Y.Wu, P.Chowdhury, P.C.Bender, A.M.Forney, W.B.Walters Multistep Coulomb excitation of 64Ni: Shape coexistence and nature of low-spin excitations NUCLEAR REACTIONS 208Pb(64Ni, 64Ni'), E=272 MeV; measured reaction products, time-of-flight difference between the projectile and target recoils as a function of scattering angle, Eγ, Iγ, (particle)γ-coin, Coulomb-excitation yields using GRETINA array with 12 modules of 48 highly-segmented coaxial HPGe crystals for γ detection, and CHICO2 array of 20 position-sensitive parallel-plate avalanche counters for the detection of scattered particles at the ATLAS-ANL facility. Multistep safe Coulomb-excitation. 64Ni; deduced levels, J, π, E2 matrix elements using GOSIA least-squares fitting code, B(E2), spectroscopic electric quadrupole moments, evidence for triple shape coexistence. Comparison with previous experimental results, and with Monte Carlo shell-model (MCSM), and conventional shell-model calculations. NUCLEAR STRUCTURE 64Ni; calculated levels, J, π, B(E2), spectroscopic quadrupole moments, proton and neutron orbital occupancies for 2+ and 0+ states using Monte Carlo shell-model (MCSM), and conventional shell-model calculations with the jj44 and fp effective interactions. Comparison with experimental data.
doi: 10.1103/PhysRevC.106.044313
2022LO05 Phys.Rev. C 105, L042801 (2022) G.Lotay, D.T.Doherty, R.V.F.Janssens, D.Seweryniak, H.M.Albers, S.Almaraz-Calderon, M.P.Carpenter, A.E.Champagne, C.J.Chiara, C.R.Hoffman, C.Iliadis, A.Kankainen, T.Lauritsen, S.Zhu Revised decay properties of the key 93-keV resonance in the 25Mg(p, γ) reaction and its influence on the MgAl cycle in astrophysical environments NUCLEAR REACTIONS 11B(16O, n), E=19 MeV; measured Eγ, Iγ, γ(θ), γγγ-coin. 26Al; deduced levels J, π, branchings. Obtained ground state branching for 93-keV resonance of 25Mg+p system which corresponds to 6398 keV level in 26Al. Comparison to other experimental data. Discussed impact on the production of cosmic γ rays. Gammasphere array with 99 detectors at ATLAS accelerator (ANL).
doi: 10.1103/PhysRevC.105.L042801
2022ON02 Phys.Rev. C 105, 055803 (2022) W.-J.Ong, M.L.Avila, P.Mohr, K.E.Rehm, D.Santiago-Gonzalez, J.Chen, C.R.Hoffman, Z.Meisel, F.Montes, J.Pereira Measurement of the 100Mo (α, xn) cross section at weak $r$-process energies NUCLEAR REACTIONS 4He(100Mo, xn);E(cm)=8.9-13.2 MeV; measured reaction products; deduced σ(E). 4He(100Mo, 2n), E=11.84-13.17; deduced σ(E).Comparison to other experimental data and Hauser-Feschbach calculations. The MUSIC detector at Argonne Tandem Linac Accelerator System (ATLAS) facility.
doi: 10.1103/PhysRevC.105.055803
2022RU06 Phys.Rev. C 106, 034318 (2022) J.Rufino, Jr., E.A.McCutchan, S.Zhu, A.A.Sonzogni, M.Alcorta, P.F.Bertone, M.P.Carpenter, J.Clark, C.R.Hoffman, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, C.J.Lister, R.Pardo, A.Rogers, G.Savard, D.Seweryniak, R.Vondrasek β decay of 141Ba RADIOACTIVITY 141Ba(β-)[from β- decay of 141Cs beam produced as fission fragment in 252Cf(SF) at the CARIBU-ANL facility]; measured Eγ, Iγ, γγ-coin, γγ(θ) using the GAMMASPHERE array with 99 Compton-suppressed HPGe detectors. 141La; deduced levels, J, π, multipolarities, multipole mixing ratios, β feedings, logft. Comparison with previous experimental results, including total absorption gamma-spectra (TAGS) data, and with evaluated data in the ENSDF database. Relevance to decay heat in reactors, and reactor antineutrino spectrum. Decay-scheme figure is given in the Supplemental material of the paper.
doi: 10.1103/PhysRevC.106.034318
2022SE03 Phys.Rev. C 105, 044315 (2022) N.Sensharma, A.D.Ayangeakaa, R.V.F.Janssens, Q.B.Chen, S.Zhu, M.Alcorta, M.P.Carpenter, E.A.McCutchan, F.G.Kondev, T.Lauritsen, D.Seweryniak, C.R.Hoffman, A.M.Rogers, A.Gade, T.Baugher, P.Chowdhury Single-particle and dipole excitations in 62Co NUCLEAR REACTIONS 26Mg(48Ca, 3np2α), E=275, 290, 320 MeV; measured Eγ, Iγ, γ(θ), γγ-coin. 62Co; deduced levels, J, π, angular correlation ratios, experimental angular distribution coefficients, multipolarities, rotational bands structures. Comparison to shell-model calculations using the GXPF1A two-body effective interaction. Systematics for magnetic rotational bands in 60Co, 61Co, 62Co, 58Fe. Gammasphere array with 101 detectors in conjunction with the fragment mass analyzer (FMA) and a microchannel plate (MCP) detector at ATLAS accelerator (ANL).
doi: 10.1103/PhysRevC.105.044315
2022SH22 Nucl.Instrum.Methods Phys.Res. A1035, 166789 (2022) O.A.Shehu, B.P.Crider, T.Ginter, C.R.Hoffman, T.H.Ogunbeku, Y.Xiao, K.L.Childers, P.Chowdhury, C.Fry, E.Lamere, R.Lewis, S.N.Liddick, B.Longfellow, S.Lyons, S.K.Neupane, D.Perez-Loureiro, C.J.Prokop, A.L.Richard, U.Silwal, D.P.Siwakoti, D.C.Smith, M.K.Smith Experimental study of the 34mCl beam production at intermediate energies RADIOACTIVITY 34Cl(IT), (EC) [from 9Be(36Ar, X), E=150 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced γ-ray energies, the beam production rates and isomeric state composition. The National Superconducting Cyclotron Laboratory (NSCL).
doi: 10.1016/j.nima.2022.166789
2022TA07 Phys.Rev. C 105, 064307 (2022) T.L.Tang, C.R.Hoffman, B.P.Kay, I.A.Tolstukhin, S.Almaraz-Calderon, B.W.Asher, M.L.Avila, Y.Ayyad, K.W.Brown, D.Bazin, J.Chen, K.A.Chipps, P.A.Copp, M.Hall, H.Jayatissa, H.J.Ong, D.Santiago-Gonzalez, D.K.Sharp, J.Song, S.Stolze, G.L.Wilson, J.Wu Experimental study of the isomeric state in 16N using the 16Ng, m(d, 3He) reaction NUCLEAR REACTIONS 2H(16N, 3He), (16mN, 3He), E=11.8 MeV/nucleon, [secondary 16N mixed beam of ground state and the isomeric state produced in 2H(15N, 16N) primary reaction at ATLAS-ANL facility]; measured reaction products, 3He spectra, (recoils)(3He)-coin, angular distributions using HELIOS spectrometer. 15C; deduced levels, J, π, spectroscopic factors, DWBA calculations. 16mN; deduced neutron-halo of the isomeric state. Comparison with Woods-Saxon potential model calculations.
doi: 10.1103/PhysRevC.105.064307
2021CA19 Phys.Rev. C 104, L022802 (2021) L.Canete, G.Lotay, G.Christian, D.T.Doherty, W.N.Catford, S.Hallam, D.Seweryniak, H.M.Albers, S.Almaraz-Calderon, E.A.Bennett, M.P.Carpenter, C.J.Chiara, J.P.Greene, C.R.Hoffman, R.V.F.Janssens, J.Jose, A.Kankainen, T.Lauritsen, A.Matta, M.Moukaddam, S.Ota, A.Saastamoinen, R.Wilkinson, S.Zhu New constraints on the 25Al (p, γ) reaction and its influence on the flux of cosmic γ rays from classical nova explosions NUCLEAR REACTIONS 11B(16O, p)26Mg, E=19 MeV from Argonne ATLAS accelerator; measured Eγ, Iγ, γγ-coin, γ(θ) and level half-lives by DSAM using Gammasphere array of 99 HPGe detectors. 2H(25Mg, p)26Mg, E=10 MeV/nucleon from Texas A and M cyclotron; measured outgoing protons and scattered deuterons using the TIARA Si array, and 26Mg recoils by the MDM-2 magnetic spectrometer with Oxford ionization chamber, angular distributions of scattered deuterons and protons. 26Mg; deduced levels, J, π, resonances, spectroscopic factors. 26Si; deduced levels, resonances, J, π, Γp, Γγ, resonance strengths by comparing with the level structures of mirror nucleus 26Mg. 25Al(p, γ)26Si, T=0.2-0.4 GK; deduced stellar reaction rate by considering the contribution of resonant states in 26Si, galactic abundance of 26Al from classical novae; performed nova outburst simulations using the hydrodynamic Lagrangian time-implicit code SHIVA.
doi: 10.1103/PhysRevC.104.L022802
2021HA14 Phys.Rev. C 103, 034322 (2021) D.J.Hartley, K.Villafana, F.G.Kondev, M.A.Riley, R.V.F.Janssens, K.Auranen, A.D.Ayangeakaa, J.S.Baron, A.J.Boston, M.P.Carpenter, J.A.Clark, J.P.Greene, J.Heery, C.R.Hoffman, P.Jackson, T.Lauritsen, J.Li, D.Little, E.S.Paul, G.Savard, D.Seweryniak, J.Simpson, S.Stolze, G.L.Wilson, J.Wu, S.Zhu, S.Frauendorf Possible quenching of static neutron pairing near the N=98 deformed shell gap: Rotational structures in 160, 161Gd NUCLEAR REACTIONS 154Sm, 164Dy(160Gd, X)160Gd/161Gd, E=1000 MeV; measured Eγ, Iγ, γγ-coin using the Gammasphere array with 73 detectors at ATLAS-ANL facility. 160,161Gd; deduced high-spin levels, J, π, rotational bands, branching ratios, B(M1)/B(E2), Nilsson configurations, alignments, neutron pairing strength. Comparison with structure of ν5/2[523] band in N=97 isotone 159Sm.
doi: 10.1103/PhysRevC.103.034322
2021MA21 Phys.Rev. C 103, 034307 (2021) A.O.Macchiavelli, H.L.Crawford, R.M.Clark, P.Fallon, I.Y.Lee, C.Morse, C.M.Campbell, M.Cromaz, C.Santamaria, J.Chen, C.R.Hoffman, B.P.Kay Coriolis coupling effects in proton-pickup spectroscopic factors from 12B NUCLEAR REACTIONS 2H(12B, 3He)11Be, E=12 MeV/nucleon; analyzed Coriolis coupling effects in proton-pickup spectroscopic factors extracted from experimental data in 2019Ch51. 11B; calculated levels, J, π, Coriolis mixing amplitudes of the proton Nilsson states using the particle rotor model (PRM) and compared with the experimental data. 11Be, 11B; calculated L=1 proton-removal spectroscopic factors from 1- 11B and 0+ 12C ground states using PRM, and compared with experimental data. 12B; deduced evidence of Coriolis coupling in the ground state.
doi: 10.1103/PhysRevC.103.034307
2021MA72 Phys.Rev. C 104, L051301 (2021) P.T.MacGregor, D.K.Sharp, S.J.Freeman, C.R.Hoffman, B.P.Kay, T.L.Tang, L.P.Gaffney, E.F.Baader, M.J.G.Borge, P.A.Butler, W.N.Catford, B.D.Cropper, G.de Angelis, J.Konki, Th.Kroll, M.Labiche, I.H.Lazarus, R.S.Lubna, I.Martel, D.G.McNeel, R.D.Page, O.Poleshchuk, R.Raabe, F.Recchia, J.Yang Evolution of single-particle structure near the N=20 island of inversion NUCLEAR REACTIONS 2H(28Mg, p)29Mg, E=9.47 MeV/nucleon, [secondary 28Mg beam from Si(p, X), E=1.4 GeV, followed resonant ionization by the resonance ionization laser ion source (RILIS), and mass separated and injected into an ion trap at the HIE-ISOLDE-CERN Linac facility]; measured E(p), I(p), σ(θ) using ISOLDE Solenoidal Spectrometer. 29Mg; deduced levels, J, π, L-transfers, spectroscopic factors, vacancies deduced from summed spectroscopic factors, binding energies of single-particle centroids. Comparison with shell-model calculations. Detailed σ(θ) data are tabulated in the Supplemental Material.
doi: 10.1103/PhysRevC.104.L051301
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
2021PR11 Phys.Rev. C 104, 044318 (2021) V.S.Prasher, A.J.Mitchell, C.J.Lister, P.Chowdhury, L.Afanasieva, M.Albers, C.J.Chiara, M.P.Carpenter, D.Cline, N.D'Olympia, C.J.Guess, A.B.Hayes, C.R.Hoffman, R.V.F.Janssens, B.P.Kay, T.L.Khoo, A.Korichi, T.Lauritsen, E.Merchan, Y.Qiu, D.Seweryniak, R.Shearman, S.K.Tandel, A.Verras, C.Y.Wu, S.Zhu Shapes, softness, and nonyrast collectivity in 186W NUCLEAR REACTIONS 186W(136Xe, 136Xe')186W, E=725, 800 MeV from ATLAS-ANL facility; measured scattered beam- and target-like ions using Rochester-Livermore 4π CHICO2 array, Eγ, Iγ, γγ- and (particle)γ-coin, gγ(θ)(DCO) using Gammasphere array. 186W; deduced high-spin levels, J, π, Kπ, multipolarities, rotational bands, odd-even staggering parameters S(J) for bands and compared with predictions for an axially symmetric rotor, a rigid asymmetric rotor and a γ-unstable nucleus, B(E1) ratios. Systematics of E(first 2+), E(first 4+)/E(first 2+), E(second 2+)/E(first 2+), E(second 0+)/E(first 2+) for A=178-188 even-A W isotopes, and staggering parameters for 178,180,182,184,186,188W, 178,180Hf, 188Os.
doi: 10.1103/PhysRevC.104.044318
2020HA13 Phys.Rev. C 101, 044301 (2020) D.J.Hartley, F.G.Kondev, G.Savard, J.A.Clark, A.D.Ayangeakaa, S.Bottoni, M.P.Carpenter, P.Copp, K.Hicks, C.R.Hoffman, R.V.F.Janssens, T.Lauritsen, R.Orford, J.Sethi, S.Zhu High-K, two-quasiparticle states in 160Gd RADIOACTIVITY 160,160mEu(β-)[from 252Cf(SF), isobarically separated A=160 nuclei using the CARIBU source at Argonne National Laboratory]; measured β-, Eγ, Iγ, βγ- and βγγ-coin using four Ge clover detectors and four plastic scintillators. 160Gd; deduced levels, J, π, Kπ, bands, Nilsson configurations, total conversion coefficients and multipolarities of the 98.8- and 102.7-keV transitions, Iβ and logft. Comparison with previous experimental results, and with multiquasiparticle calculations using Woods-Saxon potential, and Lipkin-Nogami prescription for pairing.
doi: 10.1103/PhysRevC.101.044301
2020SA44 Phys.Rev. C 102, 064317 (2020) M.Salathe, H.L.Crawford, A.O.Macchiavelli, B.P.Kay, C.R.Hoffman, A.D.Ayangeakaa, C.M.Campbell, R.M.Clark, M.Cromaz, P.Fallon, M.D.Jones, S.A.Kuvin, J.Sethi, M.Wiedeking, J.R.Winkelbauer, A.H.Wuosmaa Search for the 1/2+ intruder state in 35P NUCLEAR REACTIONS 2H(36S, 3He), E=15.3 MeV/nucleon; measured E(3He), I(3He), σ(θ) using deuterated-plastic targets and HELIOS solenoidal spectrometer at the ATLAS-ANL facility. 35P; deduced levels, J, π, spectroscopic factors, configurations, 0p0h waveform amplitude of the 36S ground state, no candidate peak for 2p2h bandhead and a deformed intruder state in 35P. Angular distribution data analyzed using PTOLEMY DWBA calculations with possible combinations of optical potentials. Comparison with previous experimental results. Systematics of experimental and shell model results for energies of 2p2h bandheads for the N=20 isotones: 32Mg, 33Al, 34Si, 35P, 36S.
doi: 10.1103/PhysRevC.102.064317
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
2019AU02 Phys.Lett. B 792, 187 (2019) K.Auranen, D.Seweryniak, M.Albers, A.D.Ayangeakaa, S.Bottoni, M.P.Carpenter, C.J.Chiara, P.Copp, H.M.David, D.T.Doherty, J.Harker, C.R.Hoffman, R.V.F.Janssens, T.L.Khoo, S.A.Kuvin, T.Lauritsen, G.Lotay, A.M.Rogers, C.Scholey, J.Sethi, R.Talwar, W.B.Walters, P.J.Woods, S.Zhu Proton decay of 108I and its significance for the termination of the astrophysical rp-process RADIOACTIVITY 108I(α), (p), 109I(p), 107,108Te(α) [from 54Fe(58Ni, X)108I/109I/108Te/107Te, E=254 MeV]; measured Eα, Iα, Ep, Ip; deduced Q-values, T1/2, mass excesses, branching ratio. Comparison with theoretical calculations.
doi: 10.1016/j.physletb.2019.03.039
2019CH51 Phys.Rev. C 100, 064314 (2019) J.Chen, K.Auranen, M.L.Avila, B.B.Back, M.A.Caprio, C.R.Hoffman, D.Gorelov, B.P.Kay, S.A.Kuvin, Q.Liu, J.L.Lou, A.O.Macchiavelli, D.G.McNeel, T.L.Tang, D.Santiago-Gonzalez, R.Talwar, J.Wu, G.Wilson, R.B.Wiringa, Y.L.Ye, C.X.Yuan, H.L.Zang Experimental study of the low-lying negative-parity states in 11Be using the 12B (d, 3He) 11Be reaction NUCLEAR REACTIONS 2H(12B, 3He)11Be, (12B, 12B'), E=12 MeV/nucleon, [secondary 12Be beam from 2H(11B, 12B), E=13.5 MeV/nucleon primary reaction]; measured reaction products, E(3He), I(3He), (3He)(11Be)- and (3He)(10Be)-coin, σ(θ) using the HELical Orbit Spectrometer (HELIOS) at the ATLAS In-Flight facility at ANL. Deuterated polyethylene (CD2)n target. 11Be; deduced levels, l-transfers, configurations, spectroscopic factors. Distorted wave Born approximation (DWBA) analysis. Comparison with previous experimental data, and with results from variational Monte Carlo and no-core shell-model calculations. Comparison with 11B(d, 3He)10Be experimental data.
doi: 10.1103/PhysRevC.100.064314
2019LO09 Eur.Phys.J. A 55, 109 (2019) G.Lotay, D.T.Doherty, D.Seweryniak, S.Almaraz-Calderon, M.P.Carpenter, C.J.Chiara, H.M.David, C.R.Hoffman, R.V.F.Janssens, A.Kankainen, T.Lauritsen, R.Wilkinson, P.J.Woods, S.Zhu Identification of γ-decaying resonant states in 26Mg and their importance for the astrophysical s process
doi: 10.1140/epja/i2019-12791-5
2018AU04 Phys.Rev.Lett. 121, 182501 (2018) K.Auranen, D.Seweryniak, M.Albers, A.D.Ayangeakaa, S.Bottoni, M.P.Carpenter, C.J.Chiara, P.Copp, H.M.David, D.T.Doherty, J.Harker, C.R.Hoffman, R.V.F.Janssens, T.L.Khoo, S.A.Kuvin, T.Lauritsen, G.Lotay, A.M.Rogers, J.Sethi, C.Scholey, R.Talwar, W.B.Walters, P.J.Woods, S.Zhu Superallowed α Decay to Doubly Magic 100Sn RADIOACTIVITY 108Xe, 104Te(α) [from 54Fe(58Ni, 4n)108Xe, E=245 MeV]; measured decay products, Eα, Iα; deduced α-particles energies, T1/2. A heavy self-conjugate nucleus, comparison with available data.
doi: 10.1103/PhysRevLett.121.182501
2018BR15 Phys.Rev. C 98, 024324 (2018) R.Broda, L.W.Iskra, R.V.F.Janssens, B.A.Brown, B.Fornal, J.Wrzesinski, N.Cieplicka-Orynczak, M.P.Carpenter, C.J.Chiara, C.R.Hoffman, F.G.Kondev, G.J.Lane, T.Lauritsen, Zs.Podolyak, D.Seweryniak, W.B.Walters, S.Zhu Two-neutron and core-excited states in 210Pb: Tracing E collectivity and evidence for a new β-decaying isomer in 210Tl NUCLEAR REACTIONS 208Pb(208Pb, X)210Pb, E=1440 MeV; 208Pb(48Ca, X)210Pb, 208Pb(76Ge, X)210Pb, 208Pb(82Se, X)210Pb, 238U(48Ca, X)210Pb, 238U(208Pb, X)210Pb, E=15-25% above the respective Coulomb barriers; measured Eγ, Iγ, delayed γ spectra, γγ-coin, γ(θ), half-lives of isomers and levels by γγ(t), ratio of observed production yields of anticipated 11+ β--decaying isomer in 210Tl and the 8+ isomer in 210Pb using Gammasphere array at ATLAS-ANL facility. 210Pb; deduced high-spin levels, isomers, J, π, conversion coefficients, multipolarities, configurations, B(E2), B(E3). 210Tl; deduced possible 11+ β- decaying isomer. Comparison with large-scale shell model calculations. NUCLEAR STRUCTURE 210Pb, 210Tl; calculated levels, J, π by large-scale shell model calculations, and compared with experimental data.
doi: 10.1103/PhysRevC.98.024324
2018CH36 Phys.Rev. C 98, 014325 (2018) J.Chen, C.R.Hoffman, T.Ahn, K.Auranen, M.L.Avila, B.B.Back, D.W.Bardayan, D.Blankstein, P.Copp, D.Gorelov, B.P.Kay, S.A.Kuvin, J.P.Lai, D.G.McNeel, P.D.O'Malley, A.M.Rogers, D.Santiago-Gonzalez, J.P.Schiffer, J.Sethi, R.Talwar, J.R.Winkelbauer Experimental study of the effective nucleon-nucleon interaction using the 21F(d, p)22F reaction NUCLEAR REACTIONS 2H(21F, p), E=10 MeV/nucleon, [21F secondary beam from 9Be(22Ne, 21F), E=11 MeV/nucleon primary reaction using ATLAS-ANL facility]; measured Ep, Ip, 22Fe recoils, (22F)p-coin, and σ(θ) using HELIcal Orbit Spectrometer (HELIOS). 22F; deduced levels, J, π, spectroscopic factors and strengths, energy centroids and diagonal particle-hole two-body matrix elements (TBMEs) as function of angular momentum, N=14, 16 shell gaps. Distorted wave Born approximation (DWBA) method for theoretical σ(θ) calculations. Comparison with theoretical spectroscopic strengths by shell-model calculation using the USDA and USDB interactions.
doi: 10.1103/PhysRevC.98.014325
2018FO11 Phys.Rev.Lett. 120, 212501 (2018) A.M.Forney, W.B.Walters, C.J.Chiara, R.V.F.Janssens, A.D.Ayangeakaa, J.Sethi, J.Harker, M.Alcorta, M.P.Carpenter, G.Gurdal, C.R.Hoffman, B.P.Kay, F.G.Kondev, T.Lauritsen, C.J.Lister, E.A.McCutchan, A.M.Rogers, D.Seweryniak, I.Stefanescu, S.Zhu Novel ΔJ = 1 Sequence in 78Ge: Possible Evidence for Triaxiality NUCLEAR REACTIONS 238U(76Ge, X)78Ge, E=530 MeV; 198Pt, 208Pb(76Ge, X)78Ge, E=450 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, B(E2). Comparison with available data and calculations.
doi: 10.1103/PhysRevLett.120.212501
2018HA19 Phys.Rev.Lett. 120, 182502 (2018) D.J.Hartley, F.G.Kondev, R.Orford, J.A.Clark, G.Savard, A.D.Ayangeakaa, S.Bottoni, F.Buchinger, M.T.Burkey, M.P.Carpenter, P.Copp, D.A.Gorelov, K.Hicks, C.R.Hoffman, C.Hu, R.V.F.Janssens, J.W.Klimes, T.Lauritsen, J.Sethi, D.Seweryniak, K.S.Sharma, H.Zhang, S.Zhu, Y.Zhu Masses and β-Decay Spectroscopy of Neutron-Rich Odd-Odd 160, 162Eu Nuclei: Evidence for a Subshell Gap with Large Deformation at N=98 RADIOACTIVITY 160,162Eu(β-); measured decay products, Eγ, Iγ; deduced γ-ray energies, partial level scheme, T1/2. ATOMIC MASSES 160,162Eu; measured frequency ratios; deduced mass excess (ME) for the ground and isomeric states.
doi: 10.1103/PhysRevLett.120.182502
2018JI01 Phys.Rev. C 97, 012801 (2018) C.L.Jiang, D.Santiago-Gonzalez, S.Almaraz-Calderon, K.E.Rehm, B.B.Back, K.Auranen, M.L.Avila, A.D.Ayangeakaa, S.Bottoni, M.P.Carpenter, C.Dickerson, B.DiGiovine, J.P.Greene, C.R.Hoffman, R.V.F.Janssens, B.P.Kay, S.A.Kuvin, T.Lauritsen, R.C.Pardo, J.Sethi, D.Seweryniak, R.Talwar, C.Ugalde, S.Zhu, D.Bourgin, S.Courtin, F.Haas, M.Heine, G.Fruet, D.Montanari, D.G.Jenkins, L.Morris, A.Lefebvre-Schuhl, M.Alcorta, X.Fang, X.D.Tang, B.Bucher, C.M.Deibel, S.T.Marley Reaction rate for carbon burning in massive stars NUCLEAR REACTIONS 12C(12C, p)23Na, (12C, α)20Ne, E=5.5-10 MeV; measured Eγ, Iγ, (particle)γ-coin, σ(E) using Gammasphere array and an array of three annular double-sided silicon strip detectors at the ATLAS-ANL facility; deduced S factors and astrophysical reaction rates. Comparison with previous measurements, and with data from other reactions. Relevance to carbon burning is a critical phase for nucleosynthesis in massive stars.
doi: 10.1103/PhysRevC.97.012801
2018SA13 Phys.Rev.Lett. 120, 122503 (2018) D.Santiago-Gonzalez, K.Auranen, M.L.Avila, A.D.Ayangeakaa, B.B.Back, S.Bottoni, M.P.Carpenter, J.Chen, C.M.Deibel, A.A.Hood, C.R.Hoffman, R.V.F.Janssens, C.L.Jiang, B.P.Kay, S.A.Kuvin, A.Lauer, J.P.Schiffer, J.Sethi, R.Talwar, I.Wiedenhover, J.Winkelbauer, S.Zhu Probing the Single-Particle Character of Rotational States in 19F Using a Short-Lived Isomeric Beam NUCLEAR REACTIONS 2H(18F, p), E=14 MeV/nucleon; measured reaction products, Ep, Ip. 19F; deduced energy levels, J, π, relative spectroscopic factors, rotational band. Comparison with shell-model calculations.
doi: 10.1103/PhysRevLett.120.122503
2018TA12 Phys.Rev. C 97, 055801 (2018) R.Talwar, M.J.Bojazi, P.Mohr, K.Auranen, M.L.Avila, A.D.Ayangeakaa, J.Harker, C.R.Hoffman, C.L.Jiang, S.A.Kuvin, B.S.Meyer, K.E.Rehm, D.Santiago-Gonzalez, J.Sethi, C.Ugalde, J.R.Winkelbauer Experimental study of 38Ar + α reaction cross sections relevant to the 41Ca abundance in the solar system NUCLEAR REACTIONS 4He(38Ar, p), (38Ar, n), (38Ar, α'), E=133 MeV; measured energies and yields of reaction products, energy- and angle integrated σ(E) using multisampling ionization chamber (MUSIC) detector at the ATLAS-ANL facility. Comparison with previous experimental values, and with statistical model calculations using TALYS code. 41K(p, α)38Ar, 41Ca(n, α)38Ar, T=0.1-10.0 GK; deduced astrophysical reaction rates, and compared with statistical model calculations, and with REACLIB fits. Discussed relevance to 41Ca abundance in the solar system.
doi: 10.1103/PhysRevC.97.055801
2017AF02 Phys.Rev. C 96, 035801 (2017) L.Afanasieva, J.C.Blackmon, C.M.Deibel, J.Lai, L.E.Linhardt, B.C.Rasco, D.Seweryniak, M.Alcorta, M.P.Carpenter, J.A.Clark, C.R.Hoffman, R.V.F.Janssens, S.Zhu γ spectroscopy of states in 32Cl relevant for the 31S(p, γ)32Cl reaction rate NUCLEAR REACTIONS 10B(24Mg, 2n)32Cl, E=75 MeV; measured Eγ, Iγ, γγ-, (32Cl recoils)γ-, and (32Cl recoils)γγ-coin using Fragment Mass Analyzer (FMA) and Gammasphere array at ATLAS-ANL facility. 32Cl; deduced levels, J, π, energies, strengths, σ, Γγ and Γp of resonances. 31S(p, γ)32Cl, T=0.1-1.0 GK; deduced astrophysical reaction rates.
doi: 10.1103/PhysRevC.96.035801
2017AL29 Phys.Rev.Lett. 119, 072701 (2017) S.Almaraz-Calderon, K.E.Rehm, N.Gerken, M.L.Avila, B.P.Kay, R.Talwar, A.D.Ayangeakaa, S.Bottoni, A.A.Chen, C.M.Deibel, C.Dickerson, K.Hanselman, C.R.Hoffman, C.L.Jiang, S.A.Kuvin, O.Nusair, R.C.Pardo, D.Santiago-Gonzalez, J.Sethi, C.Ugalde Study of the 26Alm(d, p)27Al Reaction and the Influence of the 26Al 0+ Isomer on the Destruction of 26Al in the Galaxy NUCLEAR REACTIONS C, 2H(26Al, p), E=120 MeV; measured reaction products, Eγ, Iγ. 26Al; deduced σ(θ), reaction rates. Comparison with available data, DWBA calculations.
doi: 10.1103/PhysRevLett.119.072701
2017AV03 Nucl.Instrum.Methods Phys.Res. A859, 63 (2017) M.L.Avila, K.E.Rehm, S.Almaraz-Calderon, A.D.Ayangeakaa, C.Dickerson, C.R.Hoffman, C.L.Jiang, B.P.Kay, J.Lai, O.Nusair, R.C.Pardo, D.Santiago-Gonzalez, R.Talwar, C.Ugalde Study of (α, p) and (α, n) reactions with a Multi-Sampling Ionization Chamber NUCLEAR REACTIONS 4He(17O, n), (17O, α'), E=34.8 MeV; 4He(23Na, α), (23Na, p), E=51.5, 57.4 MeV; measured reaction products, Eα, Iα, Ep, Ip; deduced σ. Comparison with available data.
doi: 10.1016/j.nima.2017.03.060
2017BO23 Phys.Lett. B 775, 271 (2017) S.Bottoni, S.Zhu, R.V.F.Janssens, M.P.Carpenter, Y.Tsunoda, T.Otsuka, A.O.Macchiavelli, D.Cline, C.Y.Wu, A.D.Ayangeakaa, B.Bucher, M.Q.Buckner, C.M.Campbell, C.J.Chiara, H.L.Crawford, M.Cromaz, H.M.David, P.Fallon, A.Gade, J.P.Greene, J.Harker, A.B.Hayes, C.R.Hoffman, B.P.Kay, A.Korichi, T.Lauritsen, J.Sethi, D.Seweryniak, W.B.Walters, D.Weisshaar, A.Wiens Nucleon correlations and the structure of 7130Zn41 NUCLEAR REACTIONS 70Zn(48Ca, 47Ca)71Zn, E=170 MeV; 197Au(70Zn, X)71Zn, E=430 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, decay scheme, J, π, modest oblate deformation. Comparison with Monte-Carlo shell-model calculations.
doi: 10.1016/j.physletb.2017.11.003
2017BR08 Phys.Rev. C 95, 064308 (2017) R.Broda, R.V.F.Janssens, L.W.Iskra, J.Wrzesinski, B.Fornal, M.P.Carpenter, C.J.Chiara, N.Cieplicka-Orynczak, C.R.Hoffman, F.G.Kondev, W.Krolas, T.Lauritsen, Zs.Podolyak, D.Seweryniak, C.M.Shand, B.Szpak, W.B.Walters, S.Zhu, B.A.Brown Doubly magic 208Pb: High-spin states, isomers, and E3 collectivity in the yrast decay NUCLEAR REACTIONS 208Pb(48Ca, X), E=430 MeV; 208Pb(208Pb, X), E=1440 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ), half-lives of isomers by γγ(t), in-beam and off-beam Iγ using Gammasphere array at ATLAS-ANL facility. 208Pb; deduced high-spin levels, new isomers, J, π, total electron-conversion coefficients from intensity balances, multipolarities, mixing ratios, B(E1), B(E2), B(E3), B(M1), B(M2), 1p-1h yrast and near-yrast states and their rotational interpretation, 2p-2h states. Comparison with shell-model calculations.
doi: 10.1103/PhysRevC.95.064308
2017BU07 Phys.Rev.Lett. 118, 152504 (2017) B.Bucher, S.Zhu, C.Y.Wu, R.V.F.Janssens, R.N.Bernard, L.M.Robledo, T.R.Rodriguez, D.Cline, A.B.Hayes, A.D.Ayangeakaa, M.Q.Buckner, C.M.Campbell, M.P.Carpenter, J.A.Clark, H.L.Crawford, H.M.David, C.Dickerson, J.Harker, C.R.Hoffman, B.P.Kay, F.G.Kondev, T.Lauritsen, A.O.Macchiavelli, R.C.Pardo, G.Savard, D.Seweryniak, R.Vondrasek Direct Evidence for Octupole Deformation in 146Ba and the Origin of Large E1 Moment Variations in Reflection-Asymmetric Nuclei NUCLEAR REACTIONS 208Pb(146Ba, 146Ba'), E=659 MeV; measured reaction products, Eγ, Iγ. 144,146,148Ba; deduced energy levels, J, π, B(Eλ), quadrupole and octupole deformation parameters. Calculated HFB potential energy surfaces, neutron single-particle energies. Coulomb excitation, comparison with available data.
doi: 10.1103/PhysRevLett.118.152504
2017KA57 Phys.Rev.Lett. 119, 182502 (2017) B.P.Kay, C.R.Hoffman, A.O.Macchiavelli Effect of Weak Binding on the Apparent Spin-Orbit Splitting in Nuclei NUCLEAR STRUCTURE 35Si, 37S, 39Ar, 41Ca; analyzed available data; deduced splitting between orbitals that are spin-orbit partners.
doi: 10.1103/PhysRevLett.119.182502
2017KU24 Phys.Rev. C 96, 041301 (2017) S.A.Kuvin, A.H.Wuosmaa, C.J.Lister, M.L.Avila, C.R.Hoffman, B.P.Kay, D.G.McNeel, C.Morse, E.A.McCutchan, D.Santiago-Gonzalez, J.R.Winkelbauer α decay of the T = 1, 2+ state in 10B and isospin symmetry breaking in the A = 10 triplet NUCLEAR REACTIONS 1H(10B, 10B'), E=10 MeV/nucleon; measured Ep, Ip, ΔE-E particle-identification spectra for α, 6Li and 10B particles, p(10Be)-, pα(6Li)-coin, angular distributions of the 1740-, 2154- and 3587-keV states for protons and for p(10B) coincidences, α-decay branching ratio of the 5164-keV state in 10B using HELIOS spectrometer at ATLAS-ANL facility. 10B; deduced levels, partial Γα and Γγ, B(E2) for the 5164-keV state. Comparison with B(E2) for 10Be and 10C, previous experimental results, and with ab initio Green's function Monte Carlo (GFMC) calculations using realistic three-nucleon Hamiltonians.
doi: 10.1103/PhysRevC.96.041301
2017MA39 Phys.Rev. C 96, 014318 (2017) D.A.Matters, F.G.Kondev, N.Aoi, Y.Ayyad, A.P.Byrne, M.P.Carpenter, J.J.Carroll, C.J.Chiara, P.M.Davidson, G.D.Dracoulis, Y.D.Fang, C.R.Hoffman, R.O.Hughes, E.Ideguchi, R.V.F.Janssens, S.Kanaya, B.P.Kay, T.Kibedi, G.J.Lane, T.Lauritsen, J.W.McClory, P.Nieminen, S.Noji, A.Odahara, H.J.Ong, A.E.Stuchbery, D.T.Tran, H.Watanabe, A.N.Wilson, Y.Yamamoto, S.Zhu In-beam γ-ray spectroscopy studies of medium-spin states in the odd-odd nucleus 186Re NUCLEAR REACTIONS 186W(d, 2n)186Re, E=12.5, 14.5 MeV; measured Eγ, Iγ, γγ-coin using Clover Array Gamma-Ray spectrometer for Advanced research (CAGRA) at RCNP, Osaka University, and CAESAR spectrometer at the 14UD Pelletron accelerator of the Australian National University. 186Re; deduced high-spin levels, J, π, K-shell conversion coefficients, multipolarities, bands, configurations, branching ratios and gK-gR values. Comparison with multi-quasiparticle blocking calculations.
doi: 10.1103/PhysRevC.96.014318
2016AL18 Phys.Rev. C 94, 034301 (2016) M.Albers, S.Zhu, A.D.Ayangeakaa, R.V.F.Janssens, J.Gellanki, I.Ragnarsson, M.Alcorta, T.Baugher, P.F.Bertone, M.P.Carpenter, C.J.Chiara, P.Chowdhury, H.M.David, A.N.Deacon, B.DiGiovine, A.Gade, C.R.Hoffman, F.G.Kondev, T.Lauritsen, C.J.Lister, E.A.McCutchan, C.Nair, A.M.Rogers, D.Seweryniak Single-particle and collective excitations in 62Ni NUCLEAR REACTIONS 26Mg(48Ca, 4n2α)62Ni, E=275, 320 MeV; measured reaction products identified by mass (A) and charge (Z), Eγ, Iγ, γ(θ), γγ-, (62Ni)γ-coin, level half-lives and transition quadrupole moments using fragment mass analyzer (FMA) and Gammasphere array at ATLAS-ANL facility. 62Ni; deduced high-spin levels, J, π, multipolarity, bands, deformation β2, alignment plots, configurations. Comparison with shell-model calculations using JUN45 and jj4b interactions, and with Nilsson-Strutinsky calculations. Comparison of alignment plots with those in 58Cr, 60Fe, 63Ni and 64Zn.
doi: 10.1103/PhysRevC.94.034301
2016AV06 Phys.Rev. C 94, 065804 (2016) M.L.Avila, K.E.Rehm, S.Almaraz-Calderon, A.D.Ayangeakaa, C.Dickerson, C.R.Hoffman, C.L.Jiang, B.P.Kay, J.Lai, O.Nusair, R.C.Pardo, D.Santiago-Gonzalez, R.Talwar, C.Ugalde Experimental study of the astrophysically important 23Na(α, p)26Mg and 23Na(α, n)26Al reactions NUCLEAR REACTIONS 4He(23Na, p), (23Na, n), E=51.5, 57.4 MeV; measured particle spectra, and cross section using multisampling ionization chamber (MUSIC) detector at ATLAS-ANL facility. Comparison with previous measurements, NACRE compilation, and with statistical-model calculations. Technique to measure simultaneously excitation functions of angle- and excitation energy-integrated cross sections of (α, p) and (α, n) reactions. Relevance to 26Al production in massive stars.
doi: 10.1103/PhysRevC.94.065804
2016AY01 Phys.Lett. B 754, 254 (2016) A.D.Ayangeakaa, R.V.F.Janssens, C.Y.Wu, J.M.Allmond, J.L.Wood, S.Zhu, M.Albers, S.Almaraz-Calderon, B.Bucher, M.P.Carpenter, C.J.Chiara, D.Cline, H.L.Crawford, H.M.David, J.Harker, A.B.Hayes, C.R.Hoffman, B.P.Kay, K.Kolos, A.Korichi, T.Lauritsen, A.O.Macchiavelli, A.Richard, D.Seweryniak, A.Wiens Shape coexistence and the role of axial asymmetry in 72Ge NUCLEAR REACTIONS 208Pb(72Ge, 72Ge'), E=301 MeV; measured reaction products, Eγ, Iγ. 72Ge; deduced energy levels, J, π, reduced E2 matrix elements, B(E2) values. Comparison with available data.
doi: 10.1016/j.physletb.2016.01.036
2016BA04 Phys.Rev. C 93, 014313 (2016) T.Baugher, A.Gade, R.V.F.Janssens, S.M.Lenzi, D.Bazin, M.P.Carpenter, C.J.Chiara, A.N.Deacon, S.J.Freeman, G.F.Grinyer, C.R.Hoffman, B.P.Kay, F.G.Kondev, T.Lauritsen, E.M.Lunderberg, S.McDaniel, K.C.Meierbachtol, A.Ratkiewicz, S.R.Stroberg, K.A.Walsh, D.Weisshaar, S.Zhu In-beam γ spectroscopy of 63Mn NUCLEAR REACTIONS 9Be(63Mn, 63Mn'), E=84 meV/nucleon, [secondary 63Mn from 9Be(76Ge, X), E=130 MeV/nucleon primary reaction]; measured Eγ, Iγ, (63Mn)γ-, γγ-coin, level half-lives by Doppler line-shape analysis using SeGA and GRETINA arrays for γ detection, A1900 fragment separator and S-800 spectrograph at NSCL-MSU accelerator facility; recreated Doppler-corrected γ spectra. 63Mn; deduced levels, J, π, B(M1), B(E2). Comparison with large-scale shell-model calculations using different model spaces and effective interactions. Systematics of 59,61,63Mn level structures.
doi: 10.1103/PhysRevC.93.014313
2016BE08 Phys.Rev. C 93, 044323 (2016) S.Bedoor, A.H.Wuosmaa, M.Albers, M.Alcorta, S.Almaraz-Calderon, B.B.Back, P.F.Bertone, C.M.Deibel, C.R.Hoffman, J.C.Lighthall, S.T.Marley, D.G.Mcneel, R.C.Pardo, K.E.Rehm, J.P.Schiffer, D.V.Shetty Structure of 14C and 14B from the 14, 15C(d, 3He)13, 14B reactions NUCLEAR REACTIONS 14C(d, 3He)13B, E=17.1 MeV/nucleon; 15C(d, 3He)14B, E=15.6 MeV/nucleon, [secondary 15C beam from 2H(14C, 15C) primary reaction]; measured 3He spectra, σ(θ) using helical orbit spectrometer (HELIOS) at ANL facility. DWBA analysis of σ(θ) data. 13,14B; deduced levels, J, π, l-transfers, spectroscopic factors, configurations. Comparison with previous experimental data and shell-model calculations with WBT and WBP interactions using the code NUSHELLX. 14,15C, 13,14B; calculated shell-model occupation numbers.
doi: 10.1103/PhysRevC.93.044323
2016BU02 Phys.Rev.Lett. 116, 112503 (2016) B.Bucher, S.Zhu, C.Y.Wu, R.V.F.Janssens, D.Cline, A.B.Hayes, M.Albers, A.D.Ayangeakaa, P.A.Butler, C.M.Campbell, M.P.Carpenter, C.J.Chiara, J.A.Clark, H.L.Crawford, M.Cromaz, H.M.David, C.Dickerson, E.T.Gregor, J.Harker, C.R.Hoffman, B.P.Kay, F.G.Kondev, A.Korichi, T.Lauritsen, A.O.Macchiavelli, R.C.Pardo, A.Richard, M.A.Riley, G.Savard, M.Scheck, D.Seweryniak, M.K.Smith, R.Vondrasek, A.Wiens Direct Evidence of Octupole Deformation in Neutron-Rich 144Ba NUCLEAR REACTIONS 208Pb(144Ba, 144Ba'), E=650 MeV; measured reaction products, Eγ, Iγ. 144Ba; deduced yields, E2 and E3 matrix elements, quadrupole moments, deformation parameters, B(E2), B(E3). Comparison with theoretical calculations.
doi: 10.1103/PhysRevLett.116.112503
2016EN04 Phys.Rev. C 93, 064312 (2016) J.P.Entwisle, B.P.Kay, A.Tamii, S.Adachi, N.Aoi, J.A.Clark, S.J.Freeman, H.Fujita, Y.Fujita, T.Furuno, T.Hashimoto, C.R.Hoffman, E.Ideguchi, T.Ito, C.Iwamoto, T.Kawabata, B.Liu, M.Miura, H.J.Ong, J.P.Schiffer, D.K.Sharp, G.Susoy, T.Suzuki, S.V.Szwec, M.Takaki, M.Tsumura, T.Yamamoto Change of nuclear configurations in the neutrinoless double-β decay of 130Te → 130Xe and 136Xe → 136Ba NUCLEAR REACTIONS 128,130Te, 130,132,134,136Xe, 136,138Ba(d, 3He), E=101 MeV; measured Ed, Id, σ(θ) using Grand Raiden (GR) spectrometer at RCNP-Osaka cyclotron facility. 127,129Sb, 129,131,133,135I, 135,137Cs; deduced levels, L-transfers, spectroscopic factors. DWBA and optical model analysis. 128,130Te, 130,132,134,136Xe, 136,138Ba; deduced ground state proton occupancies. Comparison with shell-model and interacting boson-model calculations. RADIOACTIVITY 130Te, 136Xe(2β-); deduced change in the configuration of valence protons between the initial and final states in the 0νββ decay mode from measurements of the cross sections in (d, 3He) reaction, nuclear matrix elements.
doi: 10.1103/PhysRevC.93.064312
2016HO13 Phys.Rev. C 94, 021303 (2016) S.S.Hota, S.K.Tandel, P.Chowdhury, I.Ahmad, M.P.Carpenter, C.J.Chiara, J.P.Greene, C.R.Hoffman, E.G.Jackson, R.V.F.Janssens, B.P.Kay, T.L.Khoo, F.G.Kondev, S.Lakshmi, S.Lalkovski, T.Lauritsen, C.J.Lister, E.A.McCutchan, K.Moran, D.Peterson, U.Shirwadkar, D.Seweryniak, I.Stefanescu, Y.Toh, S.Zhu Population and decay of a Kπ = 8- two-quasineutron isomer in 244Pu NUCLEAR REACTIONS 244Pu(208Pb, 208Pb'), E=1430 MeV; 244Pu(47Ti, 47TI'), E=305 MeV; measured Eγ, Iγ, γγ-coin, M1/E2 branching ratios, prompt and off-beam γ rays, half-life of a 2-qp 8- isomer using Gammasphere array at ATLAS-ANL. 244Pu; deduced high-spin levels, J, π, rotational bands, multipolarity, configurations, kinematic and dynamic moments of inertia, (gk-gR)/Q0, reduced hindrance factors for transitions from the isomer. Comparison with multi-qp calculations using Woods-Saxon potential and Lipkin-Nogami pairing. Systematics of moment of inertia plots and 8- isomers for 244Pu, 250Fm and 252No.
doi: 10.1103/PhysRevC.94.021303
2016HO14 Phys.Rev. C 94, 024330 (2016) C.R.Hoffman, B.P.Kay, J.P.Schiffer Ordering of the 0d5/2 and 1s1/2 proton levels in light nuclei NUCLEAR STRUCTURE 9B, 11,12,13,14N, 14,15O, 15,16,17F; 9,11Be, 12B, 13,14,15C, 14,15,16N, 17O; calculated 1/2+ and 5/2+ proton and neutron single-particle excitations, and compared with experimental data; deduced ordering of the 0d5/2 and 1s1/2 proton orbitals. Woods-Saxon potential calculations.
doi: 10.1103/PhysRevC.94.024330
2016MU06 Phys.Rev. C 93, 065803 (2016) M.Munch, M.Alcorta, H.O.U.Fynbo, M.Albers, S.Almaraz-Calderon, M.L.Avila, A.D.Ayangeakaa, B.B.Back, P.F.Bertone, P.F.F.Carnelli, M.P.Carpenter, C.J.Chiara, J.A.Clark, B.DiGiovine, J.P.Greene, J.L.Harker, C.R.Hoffman, N.J.Hubbard, C.L.Jiang, O.S.Kirsebom, T.Lauritsen, K.L.Laursen, S.T.Marley, C.Nair, O.Nusair, D.Santiago-Gonzalez, J.Sethi, D.Seweryniak, R.Talwar, C.Ugalde, S.Zhu Independent measurement of the Hoyle state β feeding from 12B using Gammasphere RADIOACTIVITY 12B(β-)[from 2H(11B, p), E=40 MeV from ATLAS-ANL facility]; measured Eγ, Iγ, γγ-coin, γγ(θ) for the Hoyle state using Gammasphere array. 12C; deduced first excited 2+ and 0+ levels, β branching ratio to the Hoyle state in 12C, logft, indication of higher clustering for the Hoyle state as compared to previous results. Comparison with theoretical calculations using antisymmetrized molecular dynamics (AMD), and with previous experimental results.
doi: 10.1103/PhysRevC.93.065803
2016RE20 Phys.Rev. C 94, 054324 (2016) F.Recchia, D.Weisshaar, A.Gade, J.A.Tostevin, R.V.F.Janssens, M.Albers, V.M.Bader, T.Baugher, D.Bazin, J.S.Berryman, B.A.Brown, C.M.Campbell, M.P.Carpenter, J.Chen, C.J.Chiara, H.L.Crawford, C.R.Hoffman, F.G.Kondev, A.Korichi, C.Langer, T.Lauritsen, S.N.Liddick, E.Lunderberg, S.Noji, C.Prokop, S.R.Stroberg, S.Suchyta, K.Wimmer, S.Zhu Neutron single-particle strengths at N=40, 42: Neutron knockout from 68, 70Ni ground and isomeric states NUCLEAR REACTIONS 9Be(68Ni, 67Ni), E=85 MeV/nucleon; 9Be(70Ni, 69Ni), E=74 MeV/nucleon, [secondary 68,70Ni beams from 9Be(82Se, X), E=140 MeV/nucleon, followed by separation of fragments using A1900 separator at NSCL-MSU]; measured particle spectra, Eγ, Iγ, one-neutron knockout σ for levels in the final nuclei, (67Ni or 69Ni)γ-coin, parallel momentum distributions, delayed γ from isomers using GRETINA array for γ detection and S800 spectrograph for particle analysis. 67,69Ni; measured levels, J, π, l-transfers. Comparison with shell-model calculations.
doi: 10.1103/PhysRevC.94.054324
2015AY02 Phys.Rev. C 91, 044327 (2015) A.D.Ayangeakaa, S.Zhu, R.V.F.Janssens, M.P.Carpenter, M.Albers, M.Alcorta, T.Baugher, P.F.Bertone, C.J.Chiara, P.Chowdhury, H.M.David, A.N.Deacon, B.DiGiovine, A.Gade, C.R.Hoffman, F.G.Kondev, T.Lauritsen, C.J.Lister, E.A.McCutchan, D.S.Moerland, C.Nair, A.M.Rogers, D.Seweryniak Role of the νg9/2 orbital in the development of collectivity in the A≈60 region: The case of 61Co NUCLEAR REACTIONS 26Mg(48Ca, 4np2α)61Co, E=275, 290, 320 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), centroid-shift Doppler-attenuation using FMA analyzer and GAMMASPHERE array at ATLAS-ANL facility. 61Co; deduced levels, J, π, multipolarity, bands, magnetic rotational dipole (shears) band, transition quadrupole moment and deformation parameter from DSA data, Nilsson configurations. Comparison with shell-model calculations using GXPF1A effective interaction in a modest-size pf space, and with structures of N=34 isotones 60Fe and 62Ni.
doi: 10.1103/PhysRevC.91.044327
2015CH25 Phys.Rev. C 91, 044309 (2015) C.J.Chiara, D.Weisshaar, R.V.F.Janssens, Y.Tsunoda, T.Otsuka, J.L.Harker, W.B.Walters, F.Recchia, M.Albers, M.Alcorta, V.M.Bader, T.Baugher, D.Bazin, J.S.Berryman, P.F.Bertone, C.M.Campbell, M.P.Carpenter, J.Chen, H.L.Crawford, H.M.David, D.T.Doherty, A.Gade, C.R.Hoffman, M.Honma, F.G.Kondev, A.Korichi, C.Langer, N.Larson, T.Lauritsen, S.N.Liddick, E.Lunderberg, A.O.Macchiavelli, S.Noji, C.Prokop, A.M.Rogers, D.Seweryniak, N.Shimizu, S.R.Stroberg, S.Suchyta, Y.Utsuno, S.J.Williams, K.Wimmer, S.Zhu Identification of deformed intruder states in semi-magic 70Ni NUCLEAR REACTIONS 208Pb(70Zn, X)70Ni, E=440 MeV; measured Eγ, Iγ, prompt- and delayed-γ spectra, γγ-coin, γγ(θ) using Gammasphere array at ATLAS-ANL facility. 9Be(82Se, X)70Ni, E=140 MeV/nucleon; measured Eγ, Iγ, (70Ni)γ-, γγ-coin, prompt and delayed γ rays using S800 spectrograph, GRETINA and CsI(Na) arrays at NSCL-MSU facility. 70Ni; deduced levels, J, π. Comparison with Monte Carlo shell-model calculations. NUCLEAR STRUCTURE 68,70Ni, 92Mo; calculated levels, J, π, potential-energy surface contours in (Q2, Q4) plane. Shell-model using jj44bpn, jj44pna, JUN45, and JUN45 effective interactions, and Monte Carlo shell-model with A3DA interaction. Comparison with experimental data.
doi: 10.1103/PhysRevC.91.044309
2015DA12 Phys.Rev.Lett. 115, 132502 (2015) H.M.David, J.Chen, D.Seweryniak, F.G.Kondev, J.M.Gates, K.E.Gregorich, I.Ahmad, M.Albers, M.Alcorta, B.B.Back, B.Baartman, P.F.Bertone, L.A.Bernstein, C.M.Campbell, M.P.Carpenter, C.J.Chiara, R.M.Clark, M.Cromaz, D.T.Doherty, G.D.Dracoulis, N.E.Esker, P.Fallon, O.R.Gothe, J.P.Greene, P.T.Greenlees, D.J.Hartley, K.Hauschild, C.R.Hoffman, S.S.Hota, R.V.F.Janssens, T.L.Khoo, J.Konki, J.T.Kwarsick, T.Lauritsen, A.O.Macchiavelli, P.R.Mudder, C.Nair, Y.Qiu, J.Rissanen, A.M.Rogers, P.Ruotsalainen, G.Savard, S.Stolze, A.Wiens, S.Zhu Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in 254Rf NUCLEAR REACTIONS 206Pb(50Ti, 2n)254Rf, E=242.5 MeV; measured reaction products, Eγ, Iγ, Eβ, Iβ; deduced energy levels, J, π, isomer T1/2, unprecedented fission hindrance relative to the ground state. Comparison with multiquasiparticle calculations.
doi: 10.1103/PhysRevLett.115.132502
2015HA16 Phys.Rev. C 91, 057301 (2015) D.J.Hartley, M.A.Riley, X.Wang, S.Miller, R.V.F.Janssens, E.S.Paul, J.M.Rees, J.Simpson, L.L.Riedinger, A.D.Ayangeakaa, M.P.Carpenter, C.J.Chiara, U.Garg, P.Hampson, C.R.Hoffman, F.G.Kondev, T.Lauritsen, P.J.R.Mason, J.T.Matta, P.J.Nolan, J.Ollier, M.Petri, D.C.Radford, J.P.Revill, S.Zhu, I.Ragnarsson Persistence of collective behavior at high spin in the N=88 nucleus 153Tb NUCLEAR REACTIONS 124Sn(37Cl, 4nα), E=180 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array at ATLAS-ANL facility. 153Tb; deduced high-spin levels, J, π, bands, alignments, configurations. Systematics of yrast states in N=88 isotones 152Gd, 154Dy, 156Er, 158Yb, 153Tb, 155Ho, 157Tm, and Comparison with Nilsson-Strutinsky (CNS) calculations.
doi: 10.1103/PhysRevC.91.057301
2015LI33 Phys.Rev. C 92, 024319 (2015); Erratum Phys.Rev. C 94, 069904 (2016) S.N.Liddick, W.B.Walters, C.J.Chiara, R.V.F.Janssens, B.Abromeit, A.Ayres, A.Bey, C.R.Bingham, M.P.Carpenter, L.Cartegni, J.Chen, H.L.Crawford, I.G.Darby, R.Grzywacz, J.Harker, C.R.Hoffman, S.Ilyushkin, F.G.Kondev, N.Larson, M.Madurga, D.Miller, S.Padgett, S.V.Paulauskas, M.M.Rajabali, K.Rykaczewski, D.Seweryniak, S.Suchyta, S.Zhu Analogous intruder behavior near Ni, Sn, and Pb isotopes RADIOACTIVITY 69Fe, 69Co, 69Ni(β-)[from 9Be(78Kr, X), E=140 MeV/nucleon]; measured Eγ, Iγ, (ion)γ- and βγ- correlated events, half-lives of ground states of 69Co, 69Fe, and half-life of an isomer in 69Co, absolute intensities of γ rays from the decay of directly produced 69Co and that from the decay of 69Fe using BCS system and SEGA array at NSCL-MSU facility. 69Cu, 69Co; deduced levels in 69Cu, and isomer in 69Co, J, π, intruder configuration; identified and discussed proton particle-hole intruder states originating from excitations across Z=28. 68Fe, 68Co(β-); observed γ. NUCLEAR REACTIONS 208Pb(70Zn, X)71Cu, E=440 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array at ATLAS-ANL facility. 71Cu; deduced high-spin levels, J, π, band; discussed systematics of level structure and proton particle-hole intruder states in 67,69,71Cu.
doi: 10.1103/PhysRevC.92.024319
2015PA16 Acta Phys.Pol. B46, 487 (2015) E.S.Paul, J.M.Rees, P.Hampson, M.A.Riley, J.Simpson, A.D.Ayangeakaa, J.S.Baron, M.P.Carpenter, C.J.Chiara, U.Garg, D.J.Hartley, C.R.Hoffman, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, P.J.R.Mason, J.Matta, S.L.Miller, P.J.Nolan, J.Ollier, M.Petri, D.C.Radford, J.P.Revill, X.Wang, S.Zhu, I.Ragnarsson Recent Results at Ultrahigh Spin: Terminating States and Beyond in Mass 160 Rare-earth Nuclei NUCLEAR REACTIONS 124Sn(37Cl, xn)155Ho/156Ho/157Ho, E=180 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, systematics.
doi: 10.5506/APhysPolB.46.487
2015RE03 Phys.Rev. C 91, 054301 (2015) J.M.Rees, E.S.Paul, J.Simpson, M.A.Riley, A.D.Ayangeakaa, M.P.Carpenter, C.J.Chiara, U.Garg, P.Hampson, D.J.Hartley, C.R.Hoffman, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, P.J.R.Mason, J.Matta, S.L.Miller, P.J.Nolan, J.Ollier, M.Petri, D.C.Radford, J.P.Revill, X.Wang, S.Zhu, J.Gellanki, I.Ragnarsson High-spin terminating states in the N=88 155Ho and 156Er isotones NUCLEAR REACTIONS 124Sn(37Cl, 6n)155Ho, E=180 MeV; 114Cd(48Ca, 6n)156Er, E=215 MeV; measured Eγ, Iγ, γγ-coin, angular intensity ratios using Gammasphere array at ATLAS-ANL facility. 155Ho, 156Er; deduced high-spin levels, J, π, multipolarity, bands, non-collective oblate states in 155Ho, γ-branching ratios and B(M1)/B(E2) for 155Ho, alignments, configurations, staggering parameter; calculated Tilted Fermi-surface diagrams. Comparison with cranked Nilsson-Strutinsky calculations, and with structure of N=88 isotones 154Dy, 155Ho and 156Er.
doi: 10.1103/PhysRevC.91.054301
2015SH13 Acta Phys.Pol. B46, 619 (2015) C.M.Shand, E.Wilson, Zs.Podolyak, H.Grawe, B.A.Brown, B.Fornal, R.V.F.Janssens, M.Bowry, M.Bunce, M.P.Carpenter, R.J.Carroll, C.J.Chiara, N.Cieplicka-Orynczak, A.Y.Deo, G.D.Dracoulis, C.R.Hoffman, R.S.Kempley, F.G.Kondev, G.J.Lane, T.Lauritsen, G.Lotay, M.W.Reed, P.H.Regan, C.Rodriguez Triguero, D.Seweryniak, B.Szpak, P.M.Walker, S.Zhu Structure of 207Pb Populated in 208Pb + 208Pb Deep-inelastic Collisions NUCLEAR REACTIONS 208Pb(208Pb, X)207Pb, E=1446 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, angular distributions of transitions, multipolarities, J, π. Comparison with shell model calculations.
doi: 10.5506/APhysPolB.46.619
2015WI05 Phys.Lett. B 747, 88 (2015) E.Wilson, Zs.Podolyak, H.Grawe, B.A.Brown, C.J.Chiara, S.Zhu, B.Fornal, R.V.F.Janssens, C.M.Shand, M.Bowry, M.Bunce, M.P.Carpenter, N.Cieplicka-Orynczak, A.Y.Deo, G.D.Dracoulis, C.R.Hoffman, R.S.Kempley, F.G.Kondev, G.J.Lane, T.Lauritsen, G.Lotay, M.W.Reed, P.H.Regan, C.Rodriguez Triguero, D.Seweryniak, B.Szpak, P.M.Walker Core excitations across the neutron shell gap in 207Tl NUCLEAR REACTIONS 208Pb(208Pb, X)207Tl, E=1446 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies and intensities, J, π. Comparison with shell-model calculations.
doi: 10.1016/j.physletb.2015.04.055
2014AL06 Phys.Rev.Lett. 112, 152701 (2014) S.Almaraz-Calderon, P.F.Bertone, M.Alcorta, M.Albers, C.M.Deibel, C.R.Hoffman, C.L.Jiang, S.T.Marley, K.E.Rehm, C.Ugalde Direct Measurement of the 23Na(α, p)26Mg Reaction Cross Section at Energies Relevant for the Production of Galactic 26Al NUCLEAR REACTIONS 4He(23Na, p)26Mg, E=23, 26, 28, 30 MeV; measured reaction products, Ep, Ip; deduced σ, reaction rates. Comparison with available data.
doi: 10.1103/PhysRevLett.112.152701
2014CI03 Acta Phys.Pol. B45, 205 (2014) N.Cieplicka, B.Fornal, K.H.Maier, B.Szpak, R.Broda, W.Krolas, T.Pawlat, J.Wrzesinski, R.V.F.Janssens, M.P.Carpenter, C.J.Chiara, C.R.Hoffman, F.G.Kondev, T.Lauritsen, S.Zhu, Zs.Podolyak, M.Bowry, M.Bunce, W.Gelletly, R.Kempley, M.Reed, P.Regan, P.Walker, E.Wilson, A.Y.Deo, G.Dracoulis, G.Lane, C.Rodriguez Triguero Angular Distributions of γ-Rays from 210Bi Produced in 208Pb+208Pb Deep-inelastic Reactions NUCLEAR REACTIONS 208Pb(208Pb, X)210Bi, E=1446 MeV; measured reaction products, Eγ, Iγ; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, γ-rays σ(θ).
doi: 10.5506/APhysPolB.45.205
2014GA07 Phys.Rev.Lett. 112, 112503 (2014) A.Gade, R.V.F.Janssens, D.Weisshaar, B.A.Brown, E.Lunderberg, M.Albers, V.M.Bader, T.Baugher, D.Bazin, J.S.Berryman, C.M.Campbell, M.P.Carpenter, C.J.Chiara, H.L.Crawford, M.Cromaz, U.Garg, C.R.Hoffman, F.G.Kondev, C.Langer, T.Lauritsen, I.Y.Lee, S.M.Lenzi, J.T.Matta, F.Nowacki, F.Recchia, K.Sieja, S.R.Stroberg, J.A.Tostevin, S.J.Williams, K.Wimmer, S.Zhu Nuclear Structure Towards N=40 60Ca: In-Beam γ-Ray Spectroscopy of 58, 60Ti NUCLEAR REACTIONS Be(61V, X)58Ti/60Ti, E=90 MeV/nucleon; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced energy levels, J, π, partial σ. Comparison with calculations using GXPF1A and LNPS spectroscopic factors, GRETINA at MSU.
doi: 10.1103/PhysRevLett.112.112503
2014HE32 Phys.Rev.Lett. 113, 262505 (2014) G.Henning, T.L.Khoo, A.Lopez-Martens, D.Seweryniak, M.Alcorta, M.Asai, B.B.Back, P.F.Bertone, D.Boilley, M.P.Carpenter, C.J.Chiara, P.Chowdhury, B.Gall, P.T.Greenlees, G.Gurdal, K.Hauschild, A.Heinz, C.R.Hoffman, R.V.F.Janssens, A.V.Karpov, B.P.Kay, F.G.Kondev, S.Lakshmi, T.Lauritsen, C.J.Lister, E.A.McCutchan, C.Nair, J.Piot, D.Potterveld, P.Reiter, A.M.Rogers, N.Rowley, S.Zhu Fission Barrier of Superheavy Nuclei and Persistence of Shell Effects at High Spin: Cases of 254No and 220Th NUCLEAR REACTIONS 208Pb(48Ca, 2n), E=217, 220.5 MeV; 176Yb(48Ca, 4n), E=219 MeV; measured reaction products, Eγ, Iγ; deduced fission barrier heights. Comparisons with theoretical fission barriers test theories that predict properties of superheavy elements.
doi: 10.1103/PhysRevLett.113.262505
2014HO08 Phys.Rev. C 89, 061305 (2014) C.R.Hoffman, B.P.Kay, J.P.Schiffer Neutron s states in loosely bound nuclei NUCLEAR STRUCTURE 9He, 9,11,13Be, 12,14B, 13,14,15,16C, 14,15,16N, 17O; analyzed and reviewed S(n), energies of 1/2+ and 5/2+ states to explore behavior of neutron s states near thresholds with simple Woods-Saxon potentials; deduced effect of lingering of neutron s states just below threshold on increases in radii of the neutron density distributions, and neutron halos in nuclei in different mass regions.
doi: 10.1103/PhysRevC.89.061305
2014HO16 Phys.Lett. B 739, 13 (2014) S.S.Hota, P.Chowdhury, T.L.Khoo, M.P.Carpenter, R.V.F.Janssens, Y.Qiu, I.Ahmad, J.P.Greene, S.K.Tandel, D.Seweryniak, S.Zhu, P.F.Bertone, C.J.Chiara, A.Y.Deo, N.D'Olympia, S.Gros, C.J.Guess, T.Harrington, D.J.Hartley, G.Henning, C.R.Hoffman, E.G.Jacksona, F.G.Kondev, S.Lakshmi, T.Lauritsen, C.J.Lister, E.A.McCutchan, K.Moran, C.Nair, D.Peterson, U.Shirwadkar, I.Stefanescu N=151 Pu, Cm and Cf nuclei under rotational stress: Role of higher-order deformations NUCLEAR REACTIONS 244Pu, 249Cf(208Pb, X)242Pu/243Pu/244Pu/245Pu/246Pu/248Cf/249Cf/250Cf, 248Cm(209Bi, X)246Cm/247Cm/248Cm/249Cm/250Cm, E not given; measured reaction products, Eγ, Iγ. 245Pu, 247Cm, 249Cf; deduced energy levels, J, π, rotational bands, high-spins, deformations. Comparison with available data, Cranked WS model.
doi: 10.1016/j.physletb.2014.10.021
2014WU10 Phys.Rev. C 90, 061301 (2014) A.H.Wuosmaa, J.P.Schiffer, S.Bedoor, M.Albers, M.Alcorta, S.Almaraz-Calderon, B.B.Back, P.F.Bertone, C.M.Deibel, C.R.Hoffman, J.C.Lighthall, S.T.Marley, R.C.Pardo, K.E.Rehm, D.V.Shetty Stretched states in 12, 13B with the (d, α) reaction NUCLEAR REACTIONS 2H(14C, α)12B, E=17.1 MeV/nucleon; 2H(15C, α)13B, E=15.7 MeV/nucleon, [secondary 15C beam from 2H(14C, 15C) primary reaction]; measured Eα, Iα, 12,13B spectra, (12B)α-, (13B)α-coin, σ(θ) using Helical Orbit Spectrometer (HELIOS) and Si detector telescopes at ATLAS-ANL facility. 12,13B; deduced levels, J, π, configuration. DWBA analysis. Population of stretched 3+ states.
doi: 10.1103/PhysRevC.90.061301
2014YA30 Phys.Rev. C 90, 054325 (2014) R.B.Yadav, W.C.Ma, J.C.Marsh, Q.A.Ijaz, R.V.F.Janssens, M.P.Carpenter, C.R.Hoffman, T.Lauritsen, S.Zhu, F.G.Kondev, G.Gurdal, G.B.Hagemann, D.J.Hartley, L.L.Riedinger, S.Mukhopadhyay Multiple excitation modes in 163Hf NUCLEAR REACTIONS 94Zr(74Ge, 5n), E=330 MeV; measured Eγ, Iγ, multi-fold γγ-coin, γγ(θ)(DCO) using Gammasphere array at ATLAS-ANL facility. 163Hf; deduced high-spin levels, J, π, multipolarity, bands, configurations, alignments, no evidence for triaxial strongly-deformed bands. Comparison with cranking model calculations using ULTIMATE CRANKER code. Systematics of proton crossing frequencies and aligned angular momenta in A=162-172 Hf isotopes, bandhead energies of 3/2[521] and 5/2[523] configurations in 155Gd, 157Dy, 159Er, 161Yb, 163Hf, and alignments in 159Er and 163Hf.
doi: 10.1103/PhysRevC.90.054325
2013AL19 Phys.Rev. C 88, 054314 (2013) M.Albers, S.Zhu, R.V.F.Janssens, J.Gellanki, I.Ragnarsson, M.Alcorta, T.Baugher, P.F.Bertone, M.P.Carpenter, C.J.Chiara, P.Chowdhury, A.N.Deacon, A.Gade, B.DiGiovine, C.R.Hoffman, F.G.Kondev, T.Lauritsen, C.J.Lister, E.A.McCutchan, D.S.Moerland, C.Nair, A.M.Rogers, D.Seweryniak Single-particle and collective excitations in 63Ni NUCLEAR REACTIONS 26Mg(48Ca, 3n2α)63Ni, E=275, 290, 320 MeV; measured Eγ, Iγ, γγ-, (recoils)γ-coin, γ(θ), γγ(θ), level half-lives by DSAM using FMA analyzer and Gammasphere array at ATLAS-ANL facility. 63Ni; deduced high-spin levels, J, π, rotational bands, multipolarity, transition quadrupole moment and deformation parameter, alignment plots, configurations. Comparison with shell-model, and cranked Nilsson-Strutinsky calculations. Systematics of SD bands, high-deformation bands, and deformation parameters in 56,57,58,59,60,63Ni, 60,61,62,65Zn. NUCLEAR STRUCTURE 63Ni; calculated levels, J, π using shell-model with JUN45 and jj44b effective interactions. Comparison with experimental data.
doi: 10.1103/PhysRevC.88.054314
2013BE25 Phys.Rev. C 88, 011304 (2013) S.Bedoor, A.H.Wuosmaa, J.C.Lighthall, M.Alcorta, B.B.Back, P.F.Bertone, B.A.Brown, C.M.Deibel, C.R.Hoffman, S.T.Marley, R.C.Pardo, K.E.Rehm, A.M.Rogers, J.P.Schiffer, D.V.Shetty Structure of 14B and the evolution of N=9 single-neutron isotones NUCLEAR REACTIONS 2H(13B, p), E=204 MeV, [13B secondary beam from 9Be(14C, 10B), E=240 MeV primary reaction]; measured proton spectra, σ(θ), using HELIOS spectrometer at ATLAS-ANL facility. 14B; deduced levels, J, π, spectroscopic factors, wave functions, effective single-neutron energies. DWBA analysis of σ(θ) data. N=9 isotones; trend of effective single particle energies. Comparison with shell-model calculations.
doi: 10.1103/PhysRevC.88.011304
2013CH13 Acta Phys.Pol. B44, 371 (2013) C.J.Chiara, W.B.Walters, R.V.F.Janssens, R.Broda, M.Albers, M.Alcorta, P.F.Bertone, M.P.Carpenter, C.R.Hoffman, T.Lauritsen, A.M.Rogers, D.Seweryniak, S.Zhu, F.G.Kondev, B.Fornal, W.Krolas, J.Wrzesinski, N.Larson, S.N.Liddick, C.Prokop, S.Suchyta, H.M.David, D.T.Doherty Search for Intruder States in 68Ni and 67Co NUCLEAR REACTIONS 238U, 208Pb, 197Au(70Zn, X)68Ni/67Co, E=440 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced level scheme, J, π, lack of evidence for intruder states.
doi: 10.5506/APhysPolB.44.371
2013DA16 Phys.Lett. B 726, 665 (2013) H.M.David, P.J.Woods, G.Lotay, D.Seweryniak, M.Albers, M.Alcorta, M.P.Carpenter, C.J.Chiara, T.Davinson, D.T.Doherty, C.R.Hoffman, R.V.F.Janssens, T.Lauritsen, A.M.Rogers, S.Zhu Low-lying T = O states in the odd-odd N = Z nucleus 62Ga NUCLEAR REACTIONS 24Mg(40Ca, np)62Ga, E=103 MeV; measured reaction products, Eγ, Iγ, Eβ, Iβ; deduced low-lying level energies, J, π. Comparison with shell model and IBM-4 calculations.
doi: 10.1016/j.physletb.2013.09.054
2013DO22 Phys.Rev.Lett. 111, 212502 (2013) P.Doornenbal, H.Scheit, S.Takeuchi, N.Aoi, K.Li, M.Matsushita, D.Steppenbeck, H.Wang, H.Baba, H.Crawford, C.R.Hoffman, R.Hughes, E.Ideguchi, N.Kobayashi, Y. Kondo, J.Lee, S.Michimasa, T.Motobayashi, H.Sakurai, M.Takechi, Y.Togano, R.Winkler, K.Yoneda In-Beam γ-Ray Spectroscopy of 34, 36, 38Mg: Merging the N=20 and N=28 Shell Quenching NUCLEAR REACTIONS Be(48Ca, X)37Al/39Al/40Si, E=345 MeV/nucleon; C(40Si, 38Mg), E=226 MeV/nucleon; C(39Al, 38Mg), E=219 MeV/nucleon; measured reaction products, Eγ, Iγ. 34,36,38Mg; deduced level energies, J, π, E(4+)/E(2+) ratios. Comparison with shell model calculations.
doi: 10.1103/PhysRevLett.111.212502
2013HO21 Phys.Rev. C 88, 044317 (2013) C.R.Hoffman, M.Albers, M.Alcorta, S.Almaraz-Calderon, B.B.Back, S.I.Baker, S.Bedoor, P.F.Bertone, B.P.Kay, J.C.Lighthall, T.Palchan, R.C.Pardo, G.Perdikakis, K.E.Rehm, A.M.Rogers, D.Santiago-Gonzalez, C.Yuan, J.P.Schiffer Single-neutron excitations in 18N NUCLEAR REACTIONS 2H(17N, p), [17N secondary beam from 9Be(18O, X), E=14.7 MeV/nucleon primary reaction], E=13.6 MeV/nucleon; measured E(p), I(p), σ(θ) using HELIOS spectrometer and array at ATLAS-ANL facility. 18N; deduced levels, J, π, l-transfer, spectroscopic factors, spectroscopic strengths, configuration. DWBA analysis of σ(θ) data for (d, p) reaction in inverse kinematics. 17C, 18N, 19O; systematics of low-lying states in N=11 isotones, and comparison with shell-model calculations.
doi: 10.1103/PhysRevC.88.044317
2013IZ01 Phys.Rev. C 88, 065808 (2013) R.Izsak, A.Horvath, A.Kiss, Z.Seres, A.Galonsky, C.A.Bertulani, Zs.Fulop, T.Baumann, D.Bazin, K.Ieki, C.Bordeanu, N.Carlin, M.Csanad, F.Deak, P.DeYoung, N.Frank, T.Fukuchi, A.Gade, D.Galaviz, C.R.Hoffman, W.A.Peters, H.Schelin, M.Thoennessen, G.I.Veres Determining the 7Li(n, γ) cross section via Coulomb dissociation of 8Li NUCLEAR REACTIONS C, Pb(8Li, n), [8Li secondary beam from 9Be(18O, X), E=120 MeV/nucleon primary reaction], E=69.5 MeV/nucleon; 8Li(γ, n)7Li, [γ from 8Li beam impinging on C and Pb targets], E(8Li)=69.5 MeV/nucleon; measured TOF, position and angle of 8Li particles, neutron spectra from Coulomb dissociation of 8Li, E(n), I(n) using MONA neutron detector array at NSCL-MSU cyclotron facility; reconstructed neutron 7Li energy spectra and momentum vectors; deduced σ(E) for 7Li(n, γ)8Li reaction. Surrogate method. Comparison of σ with previous experimental results, and with low-energy effective field theory calculations.
doi: 10.1103/PhysRevC.88.065808
2013KA14 Acta Phys.Pol. B44, 349 (2013) B.P.Kay, M.Alcorta, B.B.Back, S.Bedoor, P.F.Bertone, S.I.Baker, J.A.Clark, C.M.Deibel, B.J.DiGiovine, S.J.Freeman, C.R.Hoffman, H.Y.Lee, J.C.Lighthall, A.Macchiavelli, S.T.Marley, P.Muller, R.Pardo, K.E.Rehm, A.Rojas, A.M.Rogers, J.Rohrer, D.Santiago-Gonzalez, J.P.Schiffer, D.K.Sharp, D.V.Shetty, J.S.Thomas, I.Wiedenhover, A.H.Wuosmaa Transfer Reactions and the Structure of Neutron-rich Nuclei
doi: 10.5506/APhysPolB.44.349
2013MA73 Phys.Rev. C 88, 041306 (2013) J.C.Marsh, W.C.Ma, G.B.Hagemann, R.V.F.Janssens, R.Bengtsson, H.Ryde, M.P.Carpenter, G.Gurdal, D.J.Hartley, C.R.Hoffman, Q.A.Ijaz, F.G.Kondev, T.Lauritsen, S.Mukhopadhyay, L.L.Riedinger, R.B.Yadav, S.Zhu Identification of triaxial strongly deformed bands in 164Hf NUCLEAR REACTIONS 94Zr(74Ge, 4n), E=330 MeV; measured Eγ, Iγ, γγ-coin, four-fold γ coin using Gammasphere array at ATLAS-ANL facility. 164Hf; deduced high-spin levels, J, π, normal-deformed and triaxial strongly-deformed (TSD) bands, configurations, alignments; calculated total energy surface contours. Cranked shell-model calculations using Ultimate Cranker computer code.
doi: 10.1103/PhysRevC.88.041306
2013RE11 Phys.Rev. C 88, 031304 (2013) J.P.Revill, E.S.Paul, X.Wang, M.A.Riley, J.Simpson, R.V.F.Janssens, J.Ollier, A.J.Boston, M.P.Carpenter, C.J.Chiara, C.R.Hoffman, F.G.Kondev, T.Lauritsen, P.J.Nolan, J.M.Rees, S.V.Rigby, C.Unsworth, S.Zhu, I.Ragnarsson Quadrupole moments of coexisting collective shapes at high spin in 154Er NUCLEAR REACTIONS 110Pd(48Ti, 4n), E=215 MeV; measured Eγ, Iγ, γγ-coin, fractional Doppler-shift values F(τ) vs Eγ. 154Er; deduced high-spin levels, triaxial strongly deformed (TSD), and superdeformed (SD) bands, transition quadrupole moments, configurations. Configuration-dependent cranked Nilsson-Strutinsky (CNS) calculations. Total energy surface calculations. Systematics of dynamic moment of inertia plots for bands in N=86 isotones 152Dy, 153Ho and 154Er.
doi: 10.1103/PhysRevC.88.031304
2013RE18 Phys.Rev. C 88, 041302 (2013) F.Recchia, C.J.Chiara, R.V.F.Janssens, D.Weisshaar, A.Gade, W.B.Walters, M.Albers, M.Alcorta, V.M.Bader, T.Baugher, D.Bazin, J.S.Berryman, P.F.Bertone, B.A.Brown, C.M.Campbell, M.P.Carpenter, J.Chen, H.L.Crawford, H.M.David, D.T.Doherty, C.R.Hoffman, F.G.Kondev, A.Korichi, C.Langer, N.Larson, T.Lauritsen, S.N.Liddick, E.Lunderberg, A.O.Macchiavelli, S.Noji, C.Prokop, A.M.Rogers, D.Seweryniak, S.R.Stroberg, S.Suchyta, S.Williams, K.Wimmer, S.Zhu Configuration mixing and relative transition rates between low-spin states in 68Ni NUCLEAR REACTIONS 208Pb(70Zn, X)68Ni, E=440 MeV; measured Eγ, Iγ, (68Ni)γ-, γγ-coin, prompt and delayed γ rays, level half-life using Gammasphere array at ATLAS-ANL facility. 9Be(70Ni, X)68Ni, E=75 MeV/nucleon, [secondary 70Ni beam from 9Be(82Se, X), E=140 MeV/nucleon primary reaction]; measured Eγ, Iγ, γγ-coin, prompt and delayed γ rays, level half-life using S800 spectrograph, GRETINA and CsI(Na) arrays at NSCL-MSU facility. 68Ni; deduced levels, J, π, B(E2) ratios. Comparison with shell-model calculations using jj44pna, jj44b, JUN45, and LNPS effective interactions. Discussed configuration mixing.
doi: 10.1103/PhysRevC.88.041302
2013SC06 Phys.Rev. C 87, 034306 (2013) J.P.Schiffer, C.R.Hoffman, B.P.Kay, J.A.Clark, C.M.Deibel, S.J.Freeman, M.Honma, A.M.Howard, A.J.Mitchell, T.Otsuka, P.D.Parker, D.K.Sharp, J.S.Thomas Valence nucleon populations in the Ni isotopes NUCLEAR REACTIONS 58,60,62,64Ni(d, p), E=10 MeV; 58,60,62,64Ni(α, 3He), (α, t), E=38 MeV; 58,60,62,64Ni(p, d), E=28 MeV; 58,60,62,64Ni(3He, d), E=18 MeV; 58,60,62,64Ni(3He, α), E=25 MeV; measured proton, deuteron, triton, 3He, α spectra, σ(θ) using Enge-split pole magnetic spectrograph at Yale tandem accelerator facility. 57,59,61,63,65Ni, 59,61,63,65Cu; deduced levels, J, π, l-transfers, spectroscopic factors. DWBA analysis. 58,60,62,64Ni; deduced neutron occupancies, proton vacancies, energy centroids of the neutron, neutron-hole, and proton single-particle excitations. Comparison with shell-model calculations.
doi: 10.1103/PhysRevC.87.034306
2013SH02 Phys.Rev. C 87, 014312 (2013) D.K.Sharp, B.P.Kay, J.S.Thomas, S.J.Freeman, J.P.Schiffer, B.B.Back, S.Bedoor, T.Bloxham, J.A.Clark, C.M.Deibel, C.R.Hoffman, A.M.Howard, J.C.Lighthall, S.T.Marley, A.J.Mitchell, T.Otsuka, P.D.Parker, K.E.Rehm, D.V.Shetty, A.H.Wuosmaa Neutron single-particle strength outside the N=50 core NUCLEAR REACTIONS 88Sr, 90Zr, 92Mo(d, p), E=15 MeV; 88Sr, 90Zr, 92Mo(α, 3He), E=50 MeV; measured proton and 3He spectra, σ(θ) using Enge-split pole magnetic spectrograph at Yale. 2H(86Kr, p), E=10 MeV/nucleon; measured proton spectra, σ(θ) using HELIOS spectrometer at ANL. 87Kr, 89Sr, 91Zr, 93Mo; deduced levels, J, π, absolute σ, L-transfers, spectroscopic factors, centroids of single-particle strengths. DWBA analysis.
doi: 10.1103/PhysRevC.87.014312
2013WI01 Acta Phys.Pol. B44, 381 (2013) E.Wilson, Zs.Podolyak, B.Fornal, R.V.F.Janssens, M.Bowry, M.Bunce, M.P.Carpenter, C.J.Chiara, N.Cieplicka, A.Y.Deo, G.D.Dracoulis, H.Grawe, C.R.Hoffman, R.S.Kempley, F.G.Kondev, G.J.Lane, T.Lauritsen, M.W.Reed, P.H.Regan, C.Rodriguez Triguero, B.Szpak, P.M.Walker, S.Zhu Core Excitations Across the Neutron Shell Gap in 207Tl NUCLEAR REACTIONS 208Pb(208Pb, X)207Tl/209Bi, E=1446 MeV; measured reaction products, Eγ, Iγ, γ-γ-γ-coin.; deduced transition energies and intensities. Comparison with available data.
doi: 10.5506/APhysPolB.44.381
2012BE11 Phys.Rev. C 85, 044305 (2012) P.C.Bender, S.L.Tabor, V.Tripathi, C.R.Hoffman, L.Hamilton, A.Volya, R.M.Clark, P.Fallon, A.O.Macchiavelli, S.Paschalis, M.Petri, M.P.Carpenter, R.V .F.Janssens, T.Lauritsen, E.A.McCutchan, D.Seweryniak, S.Zhu, C.J.Chiara, X.Chen, W.Reviol, D.G.Sarantites, Y.Toh Multi-intruder structures in 34P NUCLEAR REACTIONS 18O(18O, np), E=24 MeV; measured Eγ, Iγ, γ(θ), γγ-, (proton)γ-coin, half-lives by DSA using Gammasphere array and Microball. 34P; deduced levels, J, π, branching ratios, multipolarity, mixing ratio, B(M1), B(E1), B(E2), B(M2), B(E3) strengths. Comparisons with shell-model calculations.
doi: 10.1103/PhysRevC.85.044305
2012CH39 Phys.Rev. C 86, 041304 (2012) C.J.Chiara, R.Broda, W.B.Walters, R.V.F.Janssens, M.Albers, M.Alcorta, P.F.Bertone, M.P.Carpenter, C.R.Hoffman, T.Lauritsen, A.M.Rogers, D.Seweryniak, S.Zhu, F.G.Kondev, B.Fornal, W.Krolas, J.Wrzesinski, N.Larson, S.N.Liddick, C.Prokop, S.Suchyta, H.M.David, D.T.Doherty Low-spin states and the non-observation of a proposed 2202-keV, o+ isomer in 68Ni NUCLEAR REACTIONS 197Au, 208Pb, 238U(70Zn, X), E=430, 440 MeV; measured Eγ, Iγ, (particle)γ-, γγ-coin, γγ(θ), prompt and delayed γ using Gammasphere array at ATLAS facility in ANL. 68Ni; deduced levels, J, π, T1/2, multipolarity and mixing ratio. Non-observation of a previously reported 0+ isomer in 68Ni.
doi: 10.1103/PhysRevC.86.041304
2012CI05 Phys.Rev. C 86, 054322 (2012) N.Cieplicka, K.H.Maier, B.Fornal, B.Szpak, R.V.F.Janssens, M.Alcorta, R.Broda, M.P.Carpenter, C.J.Chiara, C.R.Hoffman, B.P.Kay, F.G.Kondev, W.Krolas, T.Lauritsen, C.J.Lister, E.A.McCutchan, T.Pawlat, A.M.Rogers, D.Seweryniak, N.Sharp, W.B.Walters, J.Wrzesinski, S.Zhu Yrast structure of 206Bi: Isomeric states and one-proton-particle, three-neutron-hole excitations NUCLEAR REACTIONS 208Pb(76Ge, X), E=450 MeV; measured Eγ, Iγ, γ(θ), γγ-coin. 206Bi; deduced levels, J, π, T1/2, multipolarity, mixing ratio, configurations. Comparison with shell-model calculations.
doi: 10.1103/PhysRevC.86.054322
2012HO11 Phys.Rev. C 85, 054318 (2012) C.R.Hoffman, B.B.Back, B.P.Kay, J.P.Schiffer, M.Alcorta, S.I.Baker, S.Bedoor, P.F.Bertone, J.A.Clark, C.M.Deibel, B.DiGiovine, S.J.Freeman, J.P.Greene, J.C.Lighthall, S.T.Marley, R.C.Pardo, K.E.Rehm, A.Rojas, D.Santiago-Gonzalez, D.K.Sharp, D.V.Shetty, J.S.Thomas, I.Wiedenhover, A.H.Wuosmaa Experimental study of the 19O(d, p)20O reaction in inverse kinematics NUCLEAR REACTIONS 2H(19O, p), [19O secondary beam from 2H(18O, 19O), E=8.06 MeV/nucleon primary reaction], E=6.61 MeV/nucleon; measured E(p), I(p), 19,20O spectra, (recoils)p-coin, energy loss, cross sections, proton yields, σ(θ) using HELIOS spectrometer at Atlas facility. 20O; deduced levels, L-transfers, J, π, spectroscopic factors, T=1 diagonal two-body matrix elements. DWBA analysis. Comparison with shell-model calculations.
doi: 10.1103/PhysRevC.85.054318
2012HO15 Eur.Phys.J. A 48, 83 (2012) D.Hojman, M.A.Cardona, B.Roussiere, J.Sauvage, M.A.Riley, S.L.Tabor, C.R.Hoffman, A.Aguilar, W.T.Cluff, T.Hinners, K.Lagergren, S.Lee, M.Perry, A.Pipidis, V.Tripathi Band structures and shape coexistence in 187Pt NUCLEAR REACTIONS 181Ta(11B, 5n), E=71 MeV; measured Eγ, Iγ, γγ-coin. 187Pt deduced levels, J, π, γ transitions, bands, backbending, high-spin states, γ linear polarization, shape coexistence; calculated E2/M1, M2/E1 mixing ratio.
doi: 10.1140/epja/i2012-12083-8
2012HO16 Phys.Rev. C 86, 014328 (2012) A.R.Howe, R.A.Haring-Kaye, J.Doring, N.R.Baker, S.J.Kuhn, S.L.Tabor, S.R.Arora, J.K.Bruckman, C.R.Hoffman Competing single-particle and collective behavior in 71Se NUCLEAR REACTIONS 54Fe(23Na, npα), E=80 MeV; measured Eγ, Iγ, γγ-coin, DCO, level half-lives by Doppler-shift attenuation method. 71Se; deduced high-spin levels, J, π, multipolarities, bands, B(E2), transition quadrupole moments, moment of inertia plots; calculated total Routhian surfaces in β2-γ plane using cranked Woods-Saxon (CWS) calculations. Shape competition and γ softness.
doi: 10.1103/PhysRevC.86.014328
2012KA44 J.Phys.:Conf.Ser. 381, 012095 (2012) B.P.Kay, M.Alcorta, B.B.Back, S.I.Baker, S.Bedoor, T.Bloxham, J.A.Clark, C.M.Deibel, S.J.Freeman, C.R.Hoffman, A.M.Howard, J.C.Lighthall, S.T.Marley, A.J.Mitchell, K.E.Rehm, J.P.Schiffer, D.K.Sharp, D.V.Shetty, J.S.Thomas, A.H.Wuosmaa, S.Zhu HELIOS - progress and possibilities
doi: 10.1088/1742-6596/381/1/012095
2012MC03 Phys.Rev. C 86, 014312 (2012) E.A.McCutchan, C.J.Lister, StevenC.Pieper, R.B.Wiringa, D.Seweryniak, J.P.Greene, P.F.Bertone, M.P.Carpenter, C.J.Chiara, G.Gurdal, C.R.Hoffman, R.V.F.Janssens, T.L.Khoo, T.Lauritsen, S.Zhu Lifetime of the 21+ state in 10C NUCLEAR REACTIONS 1H(10B, n)10C, E=95 MeV; measured Eγ, Iγ, (10C)γ-coin, energy loss versus total energy plot, DSA, half-life of first 2+ state using Gammasphere array and FMA at ANL facility; deduced B(E2). Comparison with B(E2) value for 10Be, and with calculations using VMC and GFMC methods. NUCLEAR STRUCTURE 10Be, 10B, 10C; calculated energies of ground states and first two 2+ states, ground-state charge radii, quadrupole moments, B(E2) values. VMC and GFMC methods with AV18+IL7 interactions. Comparison with experimental data.
doi: 10.1103/PhysRevC.86.014312
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