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NSR database version of April 26, 2024.

Search: Author = J.Ojala

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2024IL01      Phys.Lett. B 848, 138371 (2024)

A.Illana, R.M.Perez-Vidal, D.Stramaccioni, J.J.Valiente-Dobon, T.R.Rodriguez, L.M.Robledo, A.Poves, K.Auranen, O.Beliuskina, C.Delafosse, T.Eronen, Z.Ge, S.Geldhof, W.Gins, T.Grahn, P.T.Greenlees, H.Joukainen, R.Julin, H.Jutila, A.Kankainen, M.Leino, J.Louko, M.Luoma, D.Nesterenko, J.Ojala, J.Pakarinen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, J.Uusitalo, G.L.Zimba

Octupole correlations in the N = Z + 2 = 56 ¹¹⁰Xe nucleus

NUCLEAR REACTIONS ⁵⁴Fe(⁵⁸Ni, 2n)¹¹⁰Xe, E=255 MeV; measured reaction products, Eγ, Iγ, Eα, Iα; deduced γ-ray energies and intensities, J, π, an octupole band . Comparison with systematics, theoretical calculations using the symmetry-conserving configuration-mixing method, based on a Gogny energy density functional. The Recoil-Decay Tagging (RDT) technique, the Mass Analysing Recoil Apparatus (MARA) vacuum mode-recoil separator, the K130 cyclotron at the Accelerator Laboratory of the University of Jyvaskylaa (JYFL), Finland.

doi: 10.1016/j.physletb.2023.138371
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2023AU03      Phys.Rev. C 108, L011303 (2023)

K.Auranen, P.Siwach, P.Arumugam, A.D.Briscoe, L.S.Ferreira, T.Grahn, P.T.Greenlees, A.Herzan, A.Illana, D.T.Joss, H.Joukainen, R.Julin, H.Jutila, M.Leino, J.Louko, M.Luoma, E.Maglione, J.Ojala, R.D.Page, J.Pakarinen, P.Rahkila, J.Romero, P.Ruotsalainen, M.Sandzelius, J.Saren, A.Tolosa-Delgado, J.Uusitalo, G.Zimba

Probing triaxiality beyond the proton drip line: Spectroscopy of ¹⁴⁷Tm

NUCLEAR REACTIONS ⁹²Mo(⁵⁸Ni, 2np)¹⁴⁷Tm, E=250 MeV; measured Eγ, Iγ, fusion-evaporation residues, recoils, γγ-coin, (recoils)γ-coin, γ(θ). ¹⁴⁷Tm; deduced levels, J, π, angular distribution coefficients, high-spin states, spin-parity of the isomeric proton decaying state, triaxiality evidences for ground-state ans isomeric state, configurations. Comparison to nonadiabatic quasiparticle model calculation. Recoil-decay tagging study using the vacuum-mode recoil separator MARA coupled with the JUROGAM3 g-ray spectrometer at Accelerator Laboratory of University of Jyvaskyla.

RADIOACTIVITY ^147mTm(p) [from ⁹²Mo(⁵⁸Ni, 2np), E=250 MeV]; measured Eγ, Iγ, recoils, γγ-coin, (recoils)γ-coin; deduced T_1/2 of the 5/2⁺ isomeric state proton decay. Recoil-decay tagging study using the vacuum-mode recoil separator MARA coupled with the JUROGAM3 g-ray spectrometer at Accelerator Laboratory of University of Jyvaskyla.

doi: 10.1103/PhysRevC.108.L011303
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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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2023PE05      Eur.Phys.J. A 59, 44 (2023)

X.Pereira-Lopez, M.A.Bentley, R.Wadsworth, P.Ruotsalainen, S.M.Lenzi, U.Forsberg, K.Auranen, A.Blazhev, B.Cederwall, T.Grahn, P.Greenlees, A.Illana, D.G.Jenkins, R.Julin, H.Jutila, S.Juutinen, X.Liu, R.Llewelyn, M.Luoma, K.Moschner, C.Muller-Gatermann, B.S.Nara Singh, F.Nowacki, J.Ojala, J.Pakarinen, P.Papadakis, P.Rahkila, J.Romero, M.Sandzelius, J.Saren, H.Tann, S.Uthayakumaar, J.Uusitalo, J.G.Vega-Romero, J.M.Vilhena, R.Yajzey, W.Zhang, G.Zimba

In-beam γ-ray spectroscopy of ⁹⁴Ag

NUCLEAR REACTIONS ⁴⁰Ca(⁵⁸Ni, 3np)⁹⁴Ag, E=157-183 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin, Eβ, Iβ; deduced γ-ray energies and relative intensities, T=0 and T=1 analog state transitions. Comparison with shell model calculations. A recoil-beta-tagging experiment using the MARA recoil separator and JUROGAM3 array at the Accelerator Laboratory of the University of Jyvaskyla.

doi: 10.1140/epja/s10050-023-00950-8
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2023PE11      Phys.Rev. C 108, 014317 (2023)

C.M.Petrache, J.Uusitalo, A.D.Briscoe, C.M.Sullivan, D.T.Joss, H.Tann, O.Aktas, B.Alayed, M.A.M.Al-Aqeel, A.Astier, H.Badran, B.Cederwall, C.Delafosse, A.Ertoprak, Z.Favier, U.Forsberg, W.Gins, T.Grahn, P.T.Greenlees, X.T.He, J.Heery, J.Hilton, S.Kalantan, R.Li, P.M.Jodidar, R.Julin, S.Juutinen, M.Leino, M.C.Lewis, J.G.Li, Z.P.Li, M.Luoma, B.F.Lv, A.McCarter, S.Nathaniel, J.Ojala, R.D.Page, J.Pakarinen, P.Papadakis, E.Parr, J.Partanen, E.S.Paul, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, J.Smallcombe, J.Sorri, S.Szwec, L.J.Wang, Y.Wang, L.Waring, F.R.Xu, J.Zhang, Z.H.Zhang, K.K.Zheng, G.Zimba

High-K three-quasiparticle isomers in the proton-rich nucleus ¹²⁹Nd

doi: 10.1103/PhysRevC.108.014317
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2023SA36      Phys.Lett. B 845, 138114 (2023)

J.Saiz-Lomas, M.Petri, I.Y.Lee, I.Syndikus, S.Heil, J.M.Allmond, L.P.Gaffney, J.Pakarinen, H.Badran, T.Calverley, D.M.Cox, U.Forsberg, T.Grahn, P.Greenlees, K.Hadynska-Klek, J.Hilton, M.Jenkinson, R.Julin, J.Konki, A.O.Macchiavelli, M.Mathy, J.Ojala, P.Papadakis, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, S.Stolze, J.Uusitalo, R.Wadsworth

The spectroscopic quadrupole moment of the 2⁺₁ state of ¹²C: A benchmark of theoretical models

NUCLEAR REACTIONS ²⁰⁸Pb(¹²C, ¹²C'), E=47.65 MeV; measured reaction products, Eγ, Iγ. ¹²C; deduced γ-ray energies, quadrupole moments, B(E2). Comparison with state-of-the-art shell-model, mean-field, ab initio calculations, cluster-based and geometrical-like theories, which show varying degrees of emergent quadrupole collectivity. The jurogam array, JYFL accelerator laboratory at the University of Jyvaskyla, Finland.

doi: 10.1016/j.physletb.2023.138114
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2023WI05      Phys.Lett. B 847, 138249 (2023)

K.Wimmer, P.Ruotsalainen, S.M.Lenzi, A.Poves, T.Huyuk, F.Browne, P.Doornenbal, T.Koiwai, T.Arici, K.Auranen, M.A.Bentley, M.L.Cortes, C.Delafosse, T.Eronen, Z.Ge, T.Grahn, P.T.Greenlees, A.Illana, N.Imai, H.Joukainen, R.Julin, A.Jungclaus, H.Jutila, A.Kankainen, N.Kitamura, B.Longfellow, J.Louko, R.Lozeva, M.Luoma, B.Mauss, D.R.Napoli, M.Niikura, J.Ojala, J.Pakarinen, X.Pereira-Lopez, P.Rahkila, F.Recchia, M.Sandzelius, J.Saren, R.Taniuchi, H.Tann, S.Uthayakumaar, J.Uusitalo, V.Vaquero, R.Wadsworth, G.Zimba, R.Yajzey

Isospin symmetry in the T = 1, A=62 triplet

NUCLEAR REACTIONS ¹²C(⁶²Zn, ⁶²Zn'), (⁶²Ga, ⁶²Ga'), (⁶²Ge, ⁶²Ge'), E ∼ 165 MeV/nucleon; ²⁴Mg(⁴⁰Ca, 2n)⁶²Ge, E=106 MeV; measured reaction products, Eγ, Iγ. ⁶²Zn, ⁶²Ga, ⁶²Ge; deduced γ-ray energies, J, π, level schemes, mirror energy differences as a function of the spin of the state. Comparison with the shell-model calculations with the K3BGR (GXPF1A) effective interactions. The Radioactive Isotope Beam Facility operated by the RIKEN Nishina Center and CNS, University of Tokyo, and the Accelerator Laboratory of the University of Jyvaskyla (JYFL-ACCLAB).

doi: 10.1016/j.physletb.2023.138249
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2022AU01      Phys.Rev.Lett. 128, 112501 (2022)

K.Auranen, A.D.Briscoe, L.S.Ferreira, T.Grahn, P.T.Greenlees, A.Herzan, A.Illana, D.T.Joss, H.Joukainen, R.Julin, H.Jutila, M.Leino, J.Louko, M.Luoma, E.Maglione, J.Ojala, R.D.Page, J.Pakarinen, P.Rahkila, J.Romero, P.Ruotsalainen, M.Sandzelius, J.Saren, A.Tolosa-Delgado, J.Uusitalo, G.Zimba

Nanosecond-Scale Proton Emission from Strongly Oblate-Deformed ¹⁴⁹Lu

RADIOACTIVITY ¹⁴⁹Lu(p) [from ⁹⁶Ru(⁵⁸Ni, 4np)¹⁴⁹Lu, E=310, 320 MeV]; measured decay products, Eγ, Iγ, Ep, Ip; deduced energy spectrum of the protons, proton decay T_1/2, Q-value. Comparison with theoretical calculations. The MARA vacuum-mode recoil separator, the K130 cyclotron of University of Jyvaskyla.

doi: 10.1103/PhysRevLett.128.112501
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2022LV04      Phys.Rev. C 105, 044319 (2022)

B.F.Lv, C.M.Petrache, K.K.Zheng, Z.H.Zhang, W.Sun, Z.P.Li, X.T.He, J.Zhang, A.Astier, P.Greenlees, T.Grahn, R.Julin, S.Juutinen, M.Luoma, J.Ojala, J.Pakarinen, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, H.Tann, J.Uusitalo, G.Zimba, B.Cederwall, O.Aktas, A.Ertoprak, W.Zhang, S.Guo, M.L.Liu, H.J.Ong, Z.Y.Sun, J.G.Wang, X.H.Zhou, I.Kuti, B.M.Nyako, D.Sohler, J.Timar, C.Andreoiu, M.Doncel, D.T.Joss, R.D.Page

Refined description of the positive-parity bands and the extent of octupole correlations in ¹²⁰Ba

NUCLEAR REACTIONS ⁵⁸Ni(⁶⁴Zn, 2p), E=255 MeV; measured Eγ, Iγ, γγγ-coin, γγ-coin, γ(θ). ¹²⁰Ba; deduced levels, J, π, DCO ratios, two-point angular correlation (anisotropy) ratios, multipolarity, B(E1), B(E2), B(E3), high-spin states, bands, configurations, alignments, moments of inertia. Comparison with unpaired cranked shell model (CNS), particle number conserving cranked shell-model (PNC-CSM), and Quadrupole and Octupole Collective Hamiltonian based on the Relativistic Hartree-Bogoliubov Model calculations (QOCH-RHB). Systematics of B(E1)/B(E2) of 7^- and 9^- states in even-even Xe and Ba (A=116-124). JUROGAM3 array and MARA at K130 cyclotron (JYFL).

doi: 10.1103/PhysRevC.105.044319
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2022OJ01      Commun. Phys. 5, 213 (2022)

J.Ojala, J.Pakarinen, P.Papadakis, J.Sorri, M.Sandzelius, D.M.Cox, K.Auranen, H.Badran, P.J.Davies, T.Grahn, P.T.Greenlees, J.Henderson, A.Herzan, R.-D.Herzberg, J.Hilton, U.Jakobsson, D.G.Jenkins, D.T.Joss, R.Julin, S.Juutinen, T.Kibedi, J.Konki, G.J.Lane, M.Leino, J.Liimatainen, C.G.McPeake, O.Neuvonen, R.D.Page, E.Parr, J.Partanen, P.Peura, P.Rahkila, J.Revill, P.Ruotsalainen, J.Saren, C.Scholey, S.Stolze, J.Uusitalo, A.Ward, R.Wadsworth

Reassigning the shapes of the 0⁺ states in the ¹⁸⁶Pb nucleus

NUCLEAR REACTIONS ¹⁰⁶Pd(⁸³Kr, 3n)¹⁸⁶Pb, E=365 MeV; measured reaction products, Eγ, Iγ, Eβ, Iβ; deduced γ-ray energies and intensities, J, π, partial level scheme, conversion-electron energy spectra, electric monopole transitions, B(E2), transitional quadrupole moments, triple shape coexistence. Sage+ritu+great instrumentation, the recoil-decay tagging technique. The Accelerator Laboratory of the University of Jyvaskyla.

doi: 10.1038/s42005-022-00990-4
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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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2022ZH17      Eur.Phys.J. A 58, 50 (2022)

K.K.Zheng, C.M.Petrache, Z.H.Zhang, A.Astier, B.F.Lv, P.T.Greenlees, T.Grahn, R.Julin, S.Juutinen, M.Luoma, J.Ojala, J.Pakarinen, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, H.Tann, J.Uusitalo, G.Zimba, B.Cederwall, O.Aktas, A.Ertoprak, W.Zhang, S.Guo, M.L.Liu, X.H.Zhou, I.Kuti, B.M.Nyako, D.Sohler, J.Timar, C.Andreoiu, M.Doncel, D.T.Joss, R.D.Page

Candidate revolving chiral doublet bands in ¹¹⁹Cs

NUCLEAR REACTIONS ⁵⁸Ni(⁶⁴Zn, 3p)¹¹⁹Cs, E=255 MeV; measured reaction products, Eγ, Iγ, γ-γ-γ-coin.; deduced γ-ray energies, levels, rotational and chiral bands, moments of inertia, single-particle angular momenta, J, π. JUROGAM 3+MARA setup at the Accelerator Laboratory of the University of Jyvaskyla, Finland.

doi: 10.1140/epja/s10050-022-00704-y
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2022ZH76      Commun. Phys. 5, 285 (2022)

W.Zhang, B.Cederwall, O.Aktas, X.Liu, A.Ertoprak, A.Nyberg, K.Auranen, B.Alayed, H.Badran, H.Boston, M.Doncel, U.Forsberg, T.Grahn, P.T.Greenlees, S.Guo, J.Heery, J.Hilton, D.Jenkins, R.Julin, S.Juutinen, M.Luoma, O.Neuvonen, J.Ojala, R.D.Page, J.Pakarinen, J.Partanen, E.S.Paul, C.Petrache, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, S.Szwec, H.Tann, J.Uusitalo, R.Wadsworth

Observation of the proton emitter ¹¹⁶₅₇La₅₉

RADIOACTIVITY ^116,117La(p), (IT) [from ⁵⁸Ni(⁶⁴Zn, 5np), E=330 MeV]; measured decay products, Eγ, Iγ; deduced proton energies or Q-value, T_1/2. The Accelerator Laboratory of the University of Jyvaskyla, the mass spectrometer MARA (Mass Analysing Recoil Apparatus) and the silicon detectors placed at its focal plane.

doi: 10.1038/s42005-022-01069-w
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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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2021ZH38      Phys.Rev. C 104, 014326 (2021)

K.K.Zheng, C.M.Petrache, Z.H.Zhang, A.Astier, B.F.Lv, P.T.Greenlees, T.Grahn, R.Julin, S.Juutinen, M.Luoma, J.Ojala, J.Pakarinen, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, H.Tann, J.Uusitalo, G.Zimba, B.Cederwall, O.Aktas, A.Ertoprak, W.Zhang, S.Guo, M.L.Liu, X.H.Zhou, I.Kuti, B.M.Nyako, D.Sohler, J.Timar, C.Andreoiu, M.Doncel, D.T.Joss, R.D.Page

Neutron excitations in ¹¹⁹Ba

NUCLEAR REACTIONS ⁵⁸Ni(⁶⁴Zn, n2p)¹¹⁹Ba, E=255 MeV; measured Eγ, Iγ, prompt and delayed γγ-coin, T_1/2 of (5/2-) isomer by γγ(t) using the JUROGAM 3 array for γ rays, and MARA recoil-mass separator setup. ¹¹⁹Ba; deduced high-spin levels, J, π, rotational bands, Nilsson configurations, alignments, moment of inertia plots. Comparison with particle number conserving cranked shell model (PNC-CSM) calculations.

doi: 10.1103/PhysRevC.104.014326
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2021ZH54      Phys.Lett. B 822, 136645 (2021)

K.K.Zheng, C.M.Petrache, Z.H.Zhang, P.W.Zhao, Y.K.Wang, A.Astier, B.F.Lv, P.T.Greenlees, T.Grahn, R.Julin, S.Juutinen, M.Luoma, J.Ojala, J.Pakarinen, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, H.Tann, J.Uusitalo, G.Zimba, B.Cederwall, O.Aktas, A.Ertoprak, W.Zhang, S.Guo, M.L.Liu, I.Kuti, B.M.Nyako, D.Sohler, J.Timar, C.Andreoiu, M.Doncel, D.T.Joss, R.D.Page

Evidence of oblate-prolate shape coexistence in the strongly-deformed nucleus ¹¹⁹Cs

NUCLEAR REACTIONS ⁵⁸Ni(⁶⁴Zn, 3p), E=255 MeV; measured reaction products, Eγ, Iγ, γ-γ-γ-coin.; deduced γ-ray energies, J, π, partial level scheme, bands, oblate-prolate shape coexistence, level T_1/2. Comparison with the particle-number conserving cranked shell model and two dimensional tilted axis cranking covariant density functional theory. JUROGAM 3+MARA setup at the Accelerator Laboratory of the University of Jyvaskyla, Finland.

doi: 10.1016/j.physletb.2021.136645
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2021ZH56      Phys.Rev. C 104, 044305 (2021)

K.K.Zheng, C.M.Petrache, Z.H.Zhang, A.Astier, B.F.Lv, P.T.Greenlees, T.Grahn, R.Julin, S.Juutinen, M.Luoma, J.Ojala, J.Pakarinen, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, H.Tann, J.Uusitalo, G.Zimba, B.Cederwall, O.Aktas, A.Ertoprak, W.Zhang, S.Guo, M.L.Liu, X.H.Zhou, I.Kuti, B.M.Nyako, D.Sohler, J.Timar, C.Andreoiu, M.Doncel, D.T.Joss, R.D.Page

Complete set of proton excitations in ¹¹⁹Cs

NUCLEAR REACTIONS ⁵⁸Ni(⁶⁴Zn, 3p)¹¹⁹Cs, E=255 MeV; measured Eγ, Iγ, (recoils)γγ- and γγγ-coin, γ(θ), γγ(θ)(DCO), γγ(angular anisotropy), γγ(linear polarization) using JUROGAM 3 array for γ detection and recoil mass separator MARA at the K130 cyclotron of University of Jyvaskyla. ¹¹⁹Cs; deduced high-spin levels, J, π, multipolarities, multipole mixing ratios, rotational bands, configurations, band crossings, chiral doublet bands, revolving chiral doublet bands, moment of inertia plots; calculated neutron occupation probabilities, single-particle Routhians, and moments of inertia plots using particle number conserving cranked shell model (PNC-CSM). Comparison between experimental results and theoretical model calculations.

doi: 10.1103/PhysRevC.104.044305
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2021ZH57      Phys.Rev. C 104, 044325 (2021)

K.K.Zheng, C.M.Petrache, Z.H.Zhang, A.Astier, B.F.Lv, P.T.Greenlees, T.Grahn, R.Julin, S.Juutinen, M.Luoma, J.Ojala, J.Pakarinen, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, H.Tann, J.Uusitalo, G.Zimba, B.Cederwall, O.Aktas, A.Ertoprak, W.Zhang, S.Guo, M.L.Liu, X.H.Zhou, I.Kuti, B.M.Nyako, D.Sohler, J.Timar, C.Andreoiu, M.Doncel, D.T.Joss, R.D.Page

Rich band structure and multiple long-lived isomers in the odd-odd ¹¹⁸Cs nucleus

NUCLEAR REACTIONS ⁵⁸Ni(⁶⁴Zn, n3p)¹¹⁸Cs, E=255 MeV; measured Eγ, Iγ, (recoils)γγ- and γγγ-coin, γ(θ), γγ(θ)(DCO), γγ(angular anisotropy), γγ(linear polarization), half-life of the 7+ isomer by γγ(t) using JUROGAM 3 array for γ detection and recoil mass separator MARA at the K130 cyclotron of University of Jyvaskyla. ¹¹⁸Cs; deduced high-spin levels, J, π, multipolarities, multipole mixing ratios, rotational bands, alignments, moments of inertia plots, two-quasiparticle configurations, moment of inertia plots; calculated single-particle Routhians, and moments of inertia plots using particle number conserving cranked shell model (PNC-CSM). Comparison between experimental results and theoretical model calculations.

doi: 10.1103/PhysRevC.104.044325
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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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2020PA20      Eur.Phys.J. A 56, 149 (2020)

J.Pakarinen, J.Ojala, P.Ruotsalainen, H.Tann, H.Badran, T.Calverley, J.Hilton, T.Grahn, P.T.Greenlees, M.Hytonen, A.Illana, A.Kauppinen, M.Luoma, P.Papadakis, J.Partanen, K.Porras, M.Puskala, P.Rahkila, K.Ranttila, J.Saren, M.Sandzelius, S.Szwec, J.Tuunanen, J.Uusitalo, G.Zimba

The jurogam 3 spectrometer

doi: 10.1140/epja/s10050-020-00144-6
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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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2019HI06      Phys.Rev. C 100, 014305 (2019)

J.Hilton, J.Uusitalo, J.Saren, R.D.Page, D.T.Joss, M.A.M.AlAqeel, H.Badran, A.D.Briscoe, T.Calverley, D.M.Cox, T.Grahn, A.Gredley, P.T.Greenlees, R.Harding, A.Herzan, E.Higgins, R.Julin, S.Juutinen, J.Konki, M.Labiche, M.Leino, M.C.Lewis, J.Ojala, J.Pakarinen, P.Papadakis, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, C.Scholey, J.Sorri, L.Sottili, S.Stolze, F.Wearing

α-spectroscopy studies of the new nuclides ¹⁶⁵Pt and ¹⁷⁰Hg

RADIOACTIVITY ¹⁶⁵Pt(α)[new nuclide from ⁹²Mo(⁷⁸Kr, 5n), E=418 MeV]; ¹⁷⁰Hg(α)[new nuclide from ⁹⁶Ru(⁷⁸Kr, 4n), E=390, 418 MeV]; ¹⁶⁷Pt(α)[from ⁹⁶Ru(⁷⁸Kr, 3nα), E=390, 418 MeV]; ¹⁶⁶Pt(α)[from ⁹⁶Ru(⁷⁸Kr, 4n), E=390, 418 MeV]; ^161,162,163Os, ^158,159W, ¹⁵⁷Ta, ^154,155Hf(α)[from α-decay chains of ¹⁶⁵Pt, ¹⁶⁷Pt and ¹⁷⁰Hg]; measured Eα, Iα, α-α correlated plots, half-lives of ground states, production cross sections of parent nuclei using the MARA spectrometer with multiwire proportional counter for recoil identification, and double-sided silicon strip detector for α detection at the University of Jyvaskyla accelerator facility; deduced Q(α), reduced α-decay widths. ¹⁶⁵Pt, ¹⁷⁰Hg(2p); no evidence found for this decay mode in this experiment, although, Q(2p) is positive for both the nuclides. Systematics of Qα and Q(2p) values for A=156-180, and α-decay reduced widths for N=83-102, for W, Os, Pt and Hg isotopes.

doi: 10.1103/PhysRevC.100.014305
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2018HE13      Acta Phys.Pol. B49, 529 (2018)

C.Henrich, Th.Kroll, K.Arnswald, C.Berger, C.Berner, T.Berry, V.Bildstein, J.Cederkall, D.Cox, G.de Angelis, H.De Witte, G.Fernandez-Martinez, L.Gaffney, G.Georgiev, S.Ilieva, A.Illana Sison, R.Lozeva, M.Matejska-Minda, P.J.Napiorkowski, J.Ojala, J.Pakarinen, G.Rainovski, M.Ramdhane, P.Reiter, H.-B.Rhee, D.Rosiak, M.Seidlitz, B.Siebeck, G.Simpson, J.Snall, V.Vaquero Soto, M.Thurauf, M.von Schmid, N.Warr, L.Werner, M.Zielinska

Coulomb Excitation of ¹⁴²Xe

NUCLEAR REACTIONS ²⁰⁶Pb(¹⁴²Xe, ¹⁴²Xe'), E=4.5 MeV/nucleon; measured reaction particle ejectiles using C-REX particle detector (segmented Si detectors) to detect both beam and recoiling target (Si detector array of 2 DSSSDs and 4 barrel Si detectors, Doppler-corrected Eγ, Iγ); deduced B(E2), B(E3) from prompt fission fragment spectroscopy following the ²⁴⁸Cm(SF), full statistics Doppler-corrected γ-ray spectrum in coincidence with backwards-facing DSSSD.

doi: 10.5506/aphyspolb.49.529
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2018PA15      Eur.Phys.J. A 54, 42 (2018)

P.Papadakis, D.M.Cox, G.G.O'Neill, M.J.G.Borge, P.A.Butler, L.P.Gaffney, P.T.Greenlees, R.-D.Herzberg, A.Illana, D.T.Joss, J.Konki, T.Kroll, J.Ojala, R.D.Page, P.Rahkila, K.Ranttila, J.Thornhill, J.Tuunanen, P.Van Duppen, N.Warr, J.Pakarinen

The SPEDE spectrometer

doi: 10.1140/epja/i2018-12474-9
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