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NSR database version of May 20, 2024.

Search: Author = J.Ollier

Found 39 matches.

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2023KU21      Phys.Rev. C 108, 044313 (2023)

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

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

doi: 10.1103/PhysRevC.108.044313
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2023SI08      Phys.Rev. C 107, 054305 (2023)

J.Simpson, M.A.Riley, A.Pipidis, E.S.Paul, X.Wang, P.J.Nolan, J.F.Sharpey-Schafer, A.Aguilar, D.E.Appelbe, A.D.Ayangeakaa, A.J.Boston, H.C.Boston, D.B.Campbell, M.P.Carpenter, C.J.Chiara, P.T.W.Choy, R.M.Clark, M.Cromaz, A.O.Evans, P.Fallon, U.Garg, A.Gorgen, D.J.Hartley, R.V.F.Janssens, D.T.Joss, D.S.Judson, F.G.Kondev, T.Lauritsen, I.Y.Lee, A.O.Macchiavelli, J.T.Matta, J.Ollier, M.Petri, J.P.Revill, L.L.Riedinger, S.V.Rigby, C.Teal, P.J.Twin, C.Unsworth, D.Ward, S.Zhu, I.Ragnarsson

Evolution of structure and shapes in 158Er to ultrahigh spin

NUCLEAR REACTIONS 114Cd(48Ca, 4n)158Er, E=215 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ). 158Er; deduced levels, J, π, high-spin states, angular intensity ratios, δ, B(M1/E2) ratios, nuclear shapes, alignments, rotational bands, configurations, band terminating states and feeding, transition quadrupole moments for triaxial strongly deformed bands, moment of inertia. Comparison with cranked Nilsson-Strutinski calculations. Systematics of triaxial strongly deformed bands in 158Er, 160Er, 152Dy, 163Lu. Gammasphere array of escape-suppressed HPGe detectors at 88-inch cyclotron-LBNL and ATLAS-ANL facilities.

doi: 10.1103/PhysRevC.107.054305
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2022BU22      Phys.Rev. C 106, 054308 (2022)

M.J.Burns, R.Chapman, K.M.Spohr, J.Ollier, M.Labiche, X.Liang, Y.Sun, Y.-X.Liu, E.Farnea, M.Axiotis, T.Martinez, D.R.Napoli, C.Ur, Th.Kroll

Rotational sequences in N = 98 167Tm populated in the 164Dy(7Li, 4nγ)167Tm fusion-evaporation reaction

NUCLEAR REACTIONS 164Dy(7Li, 4nγ), E=5 MeV; measured Eγ, Iγ, γγγ-coin. 167Tm; deduced level, J, π, high-spin states, rotational bands structure, Routhians, quasiparticle alignments, B(M1)/B(E2) ratios. Comparison with the results of the projected shell model calculations and other experimental results. GASP multidetector γ-ray array consisting of 40 escape-suppressed HPGe detectors and 80 element inner BGO ball at XTU Tandem accelerator (INFN Legnaro National Laboratory).

doi: 10.1103/PhysRevC.106.054308
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2019TO10      Eur.Phys.J. A 55, 158 (2019)

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

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

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

doi: 10.1140/epja/i2019-12839-6
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2016CH14      Phys.Rev. C 93, 044318 (2016)

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

Particle-core coupling in 37S

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

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

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

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

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

doi: 10.1103/PhysRevC.94.024325
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2015CH56      Phys.Rev. C 92, 044308 (2015)

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

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

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

doi: 10.1103/PhysRevC.92.044308
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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
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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
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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
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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
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2012RE23      J.Phys.:Conf.Ser. 381, 012066 (2012)

J.P.Revill, E.S.Paul, X.Wang, M.A.Riley, J.Simpson, J.Ollier, A.J.Boston, M.P.Carpenter, C.J.Chiara, C.Hoffman, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, P.J.Nolan, J.M.Rees, S.V.Rigby, C.Unsworth, S.Zhu, I.Ragnarsson

Relative quadrupole moments of exotic shapes at ultrahigh spin in 154Er: calibrating the TSD/SD puzzle

NUCLEAR REACTIONS 110Pd(48Ti, X), E=215 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere, Doppler shift. 154Er deduced high spin (ultrahigh) transition quadrupole moment using DSAAM (Doppler shift attenuation method), axial superdeformed shape, triaxial strongly deformed shape, rotational bands, inertia moments.Inertia moments compared with those obtained in 152Dy and 153Ho.

doi: 10.1088/1742-6596/381/1/012066
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2012SA46      Nucl.Phys. A893, 1 (2012)

E.Sahin, G.de Angelis, G.Duchene, T.Faul, A.Gadea, A.F.Lisetskiy, D.Ackermann, A.Algora, S.Aydin, F.Azaiez, D.Bazzacco, G.Benzoni, M.Bostan, T.Byrski, I.Celikovic, R.Chapman, L.Corradi, S.Courtin, D.Curien, U.Datta Pramanik, F.Didierjean, O.Dorvaux, M.N.Erduran, S.Erturk, E.Farnea, E.Fioretto, G.de France, S.Franchoo, B.Gall, A.Gottardo, B.Guiot, F.Haas, F.Ibrahim, E.Ince, A.Khouaja, A.Kusoglu, G.La Rana, M.Labiche, D.Lebhertz, S.Lenzi, S.Leoni, S.Lunardi, P.Mason, D.Mengoni, C.Michelagnoli, V.Modamio, G.Montagnoli, D.Montanari, R.Moro, B.Mouginot, D.R.Napoli, D.O'Donnell, J.R.B.Oliveira, J.Ollier, R.Orlandi, G.Pollarolo, F.Recchia, J.Robin, M.-D.Salsac, F.Scarlassara, R.P.Singh, R.Silvestri, J.F.Smith, I.Stefan, A.M.Stefanini, K.Subotic, S.Szilner, D.Tonev, D.A.Torres, M.Trotta, P.Ujic, C.Ur, J.J.Valiente-Dobon, D.Verney, M.Yalcinkaya, P.T.Wady, K.T.Wiedemann, K.Zuber

Structure of the N=50 As, Ge, Ga nuclei

NUCLEAR REACTIONS 238U(82Se, 81Ga), (82Se, 82Ge), (82Se, 83As), E=515 MeV; measured Eγ, Iγ(θ), γγ-coin, reaction fragments, (fragment)γ-coin using PRISMA magnetic spectrometer and γ after deexcitation using Ge Compton-suppressed detectors of CLARA array, thin and thick target. 81Ga, 82Ge, 83As; deduced σ(θ), levels, J, π; calculated levels, J, π using shell model.

doi: 10.1016/j.nuclphysa.2012.08.007
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2011MU19      Phys.Rev. C 84, 054320 (2011)

M.Mustafa, J.Ollier, J.Simpson, M.A.Riley, E.S.Paul, X.Wang, A.Aguilar, M.P.Carpenter, I.G.Darby, D.J.Hartley, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, P.J.Nolan, M.Petri, J.M.Rees, J.P.Revill, S.V.Rigby, C.Teal, J.Thomson, C.Unsworth, S.Zhu, B.G.Carlsson, H.L.Ma, T.Mufti, I.Ragnarsson

Diverse collective excitations in 159Er up to high spin

NUCLEAR REACTIONS 116Cd(48Ca, 5n), E=215 MeV; measured Eγ, Iγ, γγ-coin, γ(θ) using Gammasphere array. 159Er; deduced levels, J, π, multipolarities, bands, triaxial SD band, configurations, alignment plots, band termination, oblate structures, unpaired band crossings; calculated potential energy surfaces. Comparison with cranked Nilsson-Strutinsky (CNS) calculations. systematics of γ-vibrational states in N=88-94 Er nuclei.

doi: 10.1103/PhysRevC.84.054320
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2011OL02      Phys.Rev. C 83, 044309 (2011)

J.Ollier, J.Simpson, M.A.Riley, E.S.Paul, X.Wang, A.Aguilar, M.P.Carpenter, I.G.Darby, D.J.Hartley, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, P.J.Nolan, M.Petri, J.M.Rees, S.V.Rigby, C.Teal, J.Thomson, C.Unsworth, S.Zhu, A.Kardan, I.Ragnarsson

Structure changes in 160Er from low to ultrahigh spin

NUCLEAR REACTIONS 116Cd(48Ca, 4n), E=215 MeV; measured Eγ, Iγ, γγ-coin, angular distributions using Gammasphere Spectrometer. 160Er; deduced levels, J, π, rotational bands, triaxial strongly-deformed (TSD) bands, multipolarity, configurations, angular momentum alignments, B(M1)/B(E2) ratios, potential energy surfaces, dynamic moment of inertia plots, ultra-high spin regime. Comparison with cranked Nilsson-Strutinsky (CNS) calculations.

doi: 10.1103/PhysRevC.83.044309
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2011OL03      Phys.Rev. C 84, 027302 (2011)

J.Ollier, J.Simpson, M.A.Riley, E.S.Paul, X.Wang, A.Aguilar, M.P.Carpenter, I.G.Darby, D.J.Hartley, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, P.J.Nolan, M.Petri, S.V.Rigby, C.Teal, J.Thomson, C.Unsworth, S.Zhu

High-spin yrast structure of 159Ho

NUCLEAR REACTIONS 116Cd(48Ca, 4np), E=215 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array and ATLAS facility at ANL. 159Ho; deduced levels, J, π, rotational bands, configurations, alignments, signature splitting. Comparison with systematics of signature splittings in N=92 isotones 155Eu, 157Tb, 159Ho, 161Tm, 163Lu, 165Ta; and alignments in 160Er, 155,157,159,161,163,165Ho.

doi: 10.1103/PhysRevC.84.027302
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2011RE06      Phys.Rev. C 83, 044314 (2011)

J.M.Rees, E.S.Paul, M.A.Riley, J.Simpson, A.D.Ayangeakaa, H.C.Boston, M.P.Carpenter, C.J.Chiara, U.Garg, D.J.Hartley, R.V.F.Janssens, D.S.Judson, F.G.Kondev, T.Lauritsen, N.M.Lumley, J.Matta, P.J.Nolan, J.Ollier, M.Petri, J.P.Revill, L.L.Riedinger, S.V.Rigby, C.Unsworth, X.Wang, S.Zhu

Non-yrast positive-parity structures in the γ -soft nucleus 156Er

NUCLEAR REACTIONS 114Cd(48Ca, 6n), E=215 MeV; measured Eγ, Iγ, γγ-coin, angular distributions using Gammasphere spectrometer. 156Er; deduced levels, J, π, rotational bands, multipolarity, alignments, staggering parameter, configurations. Comparison with predictions of γ-rigid and γ-soft rotor model. Systematics of γ-vibrational bands for Z=68 isotopes and N=88 isotones.

doi: 10.1103/PhysRevC.83.044314
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2011WA13      Phys.Rev. C 83, 061304 (2011)

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

Collectivity in 41S

NUCLEAR REACTIONS 208Pb(36S, X), E=215 MeV; measured Eγ, Iγ, (particle)γ-coin using PRISMA spectrometer and CLARA array. 41S; deduced levels, J, π, multipolarity, configurations. Comparison with previous Coulomb excitation study and large-scale shell-model calculations using SDPF-U effective interaction.

doi: 10.1103/PhysRevC.83.061304
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2011WA14      Phys.Lett. B 702, 127 (2011)

X.Wang, M.A.Riley, J.Simpson, E.S.Paul, J.Ollier, R.V.F.Janssens, A.D.Ayangeakaa, H.C.Boston, M.P.Carpenter, C.J.Chiara, U.Garg, D.J.Hartley, D.S.Judson, F.G.Kondev, T.Lauritsen, N.M.Lumley, J.Matta, P.J.Nolan, M.Petri, J.P.Revill, L.L.Riedinger, S.V.Rigby, C.Unsworth, S.Zhu, I.Ragnarsson

Quadrupole moments of collective structures up to spin ∼ 65h in 157Er and 158Er: A challenge for understanding triaxiality in nuclei

NUCLEAR REACTIONS 114Cd(48Ca, X)157Er/158Er, E=215 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced transition quadrupole moments for weakly populated collective bands, large deformations, stable triaxial shapes. Comparison with Nilsson-Strutinsky calculations.

doi: 10.1016/j.physletb.2011.07.007
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2011WA37      Phys.Rev. C 84, 051302 (2011)

H.Watkins, D.T.Joss, T.Grahn, R.D.Page, R.J.Carroll, A.Dewald, P.T.Greenlees, M.Hackstein, R.-D.Herzberg, U.Jakobsson, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, T.Kroll, R.Krucken, M.Labiche, M.Leino, N.Lumley, P.Maierbeck, M.Nyman, P.Nieminen, D.O'Donnell, J.Ollier, J.Pakarinen, P.Peura, T.Pissulla, P.Rahkila, J.P.Revill, W.Rother, P.Ruotsalainen, S.V.Rigby, J.Saren, P.J.Sapple, M.Scheck, C.Scholey, J.Simpson, J.Sorri, J.Uusitalo, M.Venhart

Lifetime measurements probing triple shape coexistence in 175Au

NUCLEAR REACTIONS 92Mo(86Sr, 2np), E=401 MeV; measured Eγ, Iγ, αγ-, (evaporation residues)αγ-coin, half-lives by recoil-distance Doppler-shift (RDDS) and differential decay curve methods using Cologne plunger device and JUROGAM array. Recoil-decay tagging method using Gamma Recoil Electron Alpha Tagging (GREAT) spectrometer. 175Au; deduced level, J, π, B(E2), B(E1), transition quadrupole moment. Systematics of transition quadrupole moments in 175Au, 178Pt, 180,182Hg, 186Pb, 187Tl. Spherical, prolate, and mixed oblate-prolate configurations.

RADIOACTIVITY 175mAu(α); measured Eα, half-life of 11/2- isomer by correlations between recoil implantations and α decays.

doi: 10.1103/PhysRevC.84.051302
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2010DE26      Phys.Rev. C 82, 034305 (2010)

A.N.Deacon, J.F.Smith, S.J.Freeman, R.V.F.Janssens, M.P.Carpenter, B.Hadinia, C.R.Hoffman, B.P.Kay, T.Lauritsen, C.J.Lister, D.O'Donnell, J.Ollier, T.Otsuka, D.Seweryniak, K.-M.Spohr, D.Steppenbeck, S.L.Tabor, V.Tripathi, Y.Utsuno, P.T.Wady, S.Zhu

Cross-shell excitations near the "island of inversion": Structure of 30Mg

NUCLEAR REACTIONS 14C(18O, 2p), E=37 MeV; measured Eγ, Iγ, γγ-, (30Mg)γ-coin, γ(θ) using Gammasphere array, enriched 14C target. 30Mg; deduced levels, J, π, multipolarities. Comparison with shell-model calculations using the USD and SDPF-M interactions, and the Monte Carlo shell model. Systematics of first 2+ and 4+ states in 24,26,28,30,32,34Mg.

NUCLEAR REACTIONS 14C(18O, 2p)26Mg/30Mg/30Al/30Si, E=37 MeV; measured Eγ and yields.

doi: 10.1103/PhysRevC.82.034305
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2010OD01      Phys.Rev. C 81, 024318 (2010)

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

γ-ray spectroscopy of 1738Cl using grazing reactions

NUCLEAR REACTIONS 208Pb(36S, X)36Cl/37Cl/38Cl/39Cl/40Cl/41Cl/42Cl, E=215 MeV; measured Eγ, Iγ, γγ-coin using PRISMA magnetic spectrometer and the CLARA γ-ray detector array. 38Cl; deduced levels, J, π, and configurations. 34,36,38,40Cl; systematics of 5- and 7+ states. Comparison with shell model calculations.

doi: 10.1103/PhysRevC.81.024318
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2010SO03      Phys.Rev. C 81, 034310 (2010)

P.-A.Soderstrom, J.Nyberg, P.H.Regan, A.Algora, G.de Angelis, S.F.Ashley, S.Aydin, D.Bazzacco, R.J.Casperson, W.N.Catford, J.Cederkall, R.Chapman, L.Corradi, C.Fahlander, E.Farnea, E.Fioretto, S.J.Freeman, A.Gadea, W.Gelletly, A.Gottardo, E.Grodner, C.Y.He, G.A.Jones, K.Keyes, M.Labiche, X.Liang, Z.Liu, S.Lunardi, N.Marginean, P.Mason, R.Menegazzo, D.Mengoni, G.Montagnoli, D.Napoli, J.Ollier, S.Pietri, Zs.Podolyak, G.Pollarolo, F.Recchia, E.Sahin, F.Scarlassara, R.Silvestri, J.F.Smith, K.-M.Spohr, S.J.Steer, A.M.Stefanini, S.Szilner, N.J.Thompson, G.M.Tveten, C.A.Ur, J.J.Valiente-Dobon, V.Werner, S.J.Williams, F.R.Xu, J.Y.Zhu

Spectroscopy of neutron-rich 168, 170Dy: Yrast band evolution close to the NpNn valence maximum

NUCLEAR REACTIONS 170Er(82Se, X)168Dy/170Dy, E=460 MeV; measured mass yields, distributions of product nuclei using PRISMA spectrometer, Eγ, Iγ, γγ-, (particle)γ-coin using CLARA HPGe array. 168Dy; deduced levels, J, π, rotational bands, moments of inertia. 170Dy; deduced 4+ to 2+ transition. 170Er; measured Eγ. Z=64-72, N=94-108; systematics of levels and moments of inertia for even-even isotopes, and total Routhian surface calculations. 81,82,83,84,85,86,87,88,89,90Kr, 162,163,164,165,166,167,168,169,170,171Dy; measured yields of complementary beam-like and target-like fragments through 2pxn channels.

doi: 10.1103/PhysRevC.81.034310
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2010ST13      Nucl.Phys. A847, 149 (2010)

D.Steppenbeck, A.N.Deacon, S.J.Freeman, R.V.F.Janssens, M.P.Carpenter, C.R.Hoffman, B.P.Kay, T.Lauritsen, C.J.Lister, D.O'Donnell, J.Ollier, D.Seweryniak, J.F.Smith, K.-M.Spohr, S.L.Tabor, V.Tripathi, P.T.Wady, S.Zhu

Cross-shell excitations in 30Al and 30Si at high spin

NUCLEAR REACTIONS 14C(18O, X), E=37 MeV; measured Eγ, Iγ, (residual)γ-, γγ-coin, γ(θ), DCO ratios using the Gammasphere array and Fragment Mass Analyzer. 30Al, 30Si; deduced levels, J, π, multipolarities. Comparison with shell-model calculations.

doi: 10.1016/j.nuclphysa.2010.07.010
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2010WA12      Phys.Rev. C 81, 054305 (2010)

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

γ-ray spectroscopy of neutron-rich 40S

NUCLEAR REACTIONS 208Pb(36S, X), E=215 MeV; measured Eγ, Iγ, (particle)γ-, γγ-coin using PRISMA spectrometer and CLARA array. 40S; deduced levels, J, π, B(E2), configurations. Comparison with previous work and large-scale sd-pf shell model calculations. Systematics of energies of first 2+ and 4+ states and B(E2) for 38,40,42,44S nuclei. 38S; measured Eγ, Iγ.

NUCLEAR REACTIONS 208Pb(36S, X)34S/35S/36S/37S/38S/39S/40S/41S, E=215 MeV; measured yields.

doi: 10.1103/PhysRevC.81.054305
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2010WA20      Phys.Rev. C 81, 064301 (2010)

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

Intruder negative-parity states of neutron-rich 33Si

NUCLEAR REACTIONS 208Pb(36S, X)30Si/31Si/32Si/33Si/34Si/35Si/36Si, E=215 MeV; measured mass spectrum of Si fragments, Eγ, Iγ, (fragment)γ-, γγ-coin with CLARA array and PRISMA spectrometer. 33Si; deduced levels, J, π, multipolarity, shell-model configurations. Comparison with large-scale shell model calculations using PSDPFB effective interaction.

doi: 10.1103/PhysRevC.81.064301
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2009MA23      Acta Phys.Pol. B40, 489 (2009)

P.Mason, L.Corradi, E.Fioretto, B.Guiot, R.Silvestri, A.M.Stefanini, S.Beghini, G.Montagnoli, F.Scarlassara, N.Marginean, S.Szilner, G.Pollarolo, E.Farnea, A.Gadea, D.Mengoni, D.R.Napoli, F.Recchia, E.Sahin, C.A.Ur, J.J.Valiente-Dobon, R.Chapman, S.Freeman, A.Hodsdon, G.Jones, M.Labiche, D.O'Donnell, J.Ollier, R.Orlandi, J.Smith, K.Spohr, N.Thompson, P.Wady, Z.Wang

Exploring the Performance of the Spectrometer PRISMA in Heavy Zirconium and Xenon Mass Regions

NUCLEAR REACTIONS 96Zr(124Sn, X), 136Xe(208Pb, X), E=500, 930 MeV;136Cs, 134I; measured Eγ, Iγ, γγ-coin.


2009OL09      Phys.Rev. C 80, 064322 (2009)

J.Ollier, J.Simpson, X.Wang, M.A.Riley, A.Aguilar, C.Teal, E.S.Paul, P.J.Nolan, M.Petri, S.V.Rigby, J.Thomson, C.Unsworth, M.P.Carpenter, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, S.Zhu, D.J.Hartley, I.G.Darby, I.Ragnarsson

Ultrahigh-spin spectroscopy of 159, 160Er: Observation of triaxial strongly deformed structures

NUCLEAR REACTIONS 116Cd(48Ca, X), E=215 MeV; measured Eγ, Iγ, γγ using Gammasphere array. 159,160Er; deduced levels, J, π, triaxial strongly deformed (TSD) bands, dynamical moment of inertia plots, and configurations. Calculated potential energy surfaces and single-particle proton and neutron energies (Routhians) with Cranked Nilsson-Strutinsky approach.

doi: 10.1103/PhysRevC.80.064322
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2009RI05      Acta Phys.Pol. B40, 513 (2009)

M.A.Riley, A.Aguilar, A.O.Evans, D.J.Hartley, K.Lagergren, J.Ollier, E.S.Paul, A.Pipidis, J.Simpson, C.Teal, P.J.Twin, X.Wang, D.E.Appelbe, D.B.Campbell, M.P.Carpenter, R.M.Clark, M.Cromaz, I.G.Darby, P.Fallon, U.Garg, R.V.F.Janssens, D.T.Joss, F.G.Kondev, T.Lauritsen, I.Y.Lee, C.J.Lister, A.O.Macchiavelli, P.J.Nolan, M.Petri, S.V.Rigby, J.Thompson, C.Unsworth, D.Ward, S.Zhu, I.Ragnarsson

Strongly Deformed Nuclear Shapes at Ultra-High Spin and Shape Coexistence in ∼ 90 Nuclei


2009RO17      Phys.Rev. C 80, 024323 (2009); Erratum Phys.Rev. C 80, 049901 (2009)

N.Rowley, J.Ollier, J.Simpson

Natural reference for nuclear high-spin states

NUCLEAR STRUCTURE 154,156,157,158,159,160,162,164,166,168,170,172Er, 164,166,168,170,172,174,176,178,180,182,184,186Os, 157Ho, 159Tm, 176W, 178Yb; Z=62-80, N=82-126; analyzed energies, routhians, alignments, integrated angular momentum, kinematic and dynamic moments of inertia for high-spin levels of even-even nuclides using variable moment of inertia (VMI) model. Comparisons with experimental data.

doi: 10.1103/PhysRevC.80.024323
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2007HO08      Phys.Rev. C 75, 034313 (2007)

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

Spectroscopy of neutron-rich 37P

NUCLEAR REACTIONS 208Pb(36S, X)32P/33P/34P/35P/36P/37P, E=215 MeV; measured particle yields, Eγ, Iγ, (particle)γ-coin. 37P deduced levels, J, π, configurations. Clara array.

doi: 10.1103/PhysRevC.75.034313
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2006LI32      Phys.Rev. C 74, 014311 (2006)

X.Liang, F.Azaiez, R.Chapman, F.Haas, D.Bazzacco, S.Beghini, B.R.Behera, L.Berti, M.Burns, E.Caurier, L.Corradi, D.Curien, A.Deacon, G.de Angelis, Zs.Dombradi, E.Farnea, E.Fioretto, A.Hodsdon, A.Gadea, F.Ibrahim, A.Jungclaus, K.Keyes, A.Latina, S.Lunardi, N.Marginean, R.Menegazzo, G.Montagnoli, D.R.Napoli, F.Nowacki, J.Ollier, A.Papenberg, G.Pollarolo, V.F.E.Pucknell, M.-D.Salsac, F.Scarlassara, J.F.Smith, K.Spohr, M.Stanoiu, A.M.Stefanini, S.Szilner, N.Toniolo, M.Trotta, D.Verney, Z.Wang, J.Wrzesinski

Study of the neutron-rich nucleus 36Si

NUCLEAR REACTIONS 208Pb(36S, X), E=215 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin, yields. 36Si deduced levels, J, π, B(E2). Comparison with shell model predictions, level systematics in neighboring nuclides discussed.

doi: 10.1103/PhysRevC.74.014311
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2005BU37      J.Phys.(London) G31, S1827 (2005)

M.J.Burns, R.Chapman, K.M.Spohr, J.Ollier, M.Labiche, X.Liang, E.Farnea, M.Axiotis, T.Martinez, D.R.Napoli, C.A.Ur, Th.Kroll

High spin studies of the Er and Tm isotopes around A = 166

NUCLEAR REACTIONS 164Dy(7Li, xnyp), E=55 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin. 167Tm deduced high-spin levels, J, π, configurations. 166Er deduced rotational band features. GASP, ISIS arrays.

doi: 10.1088/0954-3899/31/10/081
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2005KE08      J.Phys.(London) G31, S1903 (2005)

K.L.Keyes, A.Papenberg, R.Chapman, J.Ollier, X.Liang, M.J.Burns, M.Labiche, K.M.Spohr, N.Amzal, C.Beck, P.Bednarczyk, F.Haas, G.Duchene, P.Papka, B.Gebauer, T.Kokalova, S.Thummerer, W.von Oertzen, C.Wheldon

Spectroscopy of Ne, Na and Mg isotopes approaching the Island of Inversion

NUCLEAR REACTIONS 150Nd(26Ne, X)22Ne/23Na/28Mg, E=160 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin. 22Ne, 23Na, 28Mg deduced levels, J, π. Euroball IV array, fragment separator.

doi: 10.1088/0954-3899/31/10/098
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2005KE11      Eur.Phys.J. A 25, Supplement 1, 431 (2005)

K.L.Keyes, A.Papenberg, R.Chapman, J.Ollier, X.Liang, M.J.Burns, M.Labiche, K.-M.Spohr, N.Amzal, C.Beck, P.Bednarczyk, F.Haas, G.Duchene, P.Papka, B.Gebauer, T.Kokalova, S.Thummerer, W.von Oertzen, C.Wheldon

Spectroscopy of Ne and Na isotopes: Preliminary results from a EUROBALL + Binary Reaction Spectrometer experiment

NUCLEAR REACTIONS 150Nd(26Mg, X), E=160 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin. 22Ne, 23Na deduced levels, J, π. Euroball IV array, binary reaction spectrometer.

doi: 10.1140/epjad/i2005-06-155-4
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2005OL02      Phys.Rev. C 71, 034316 (2005)

J.Ollier, R.Chapman, X.Liang, M.Labiche, K.-M.Spohr, M.Davison, G.de Angelis, M.Axiotis, T.Kroll, D.R.Napoli, T.Martinez, D.Bazzacco, E.Farnea, S.Lunardi, A.G.Smith, F.Haas

Intruder configurations in neutron-rich 34P

NUCLEAR REACTIONS 176Yb(36S, X)34P, E=230 MeV; measured Eγ, Iγ, γγ-coin. 34P deduced levels, J, π, configurations. GASP array, level systematics in neighboring isotopes discussed.

doi: 10.1103/PhysRevC.71.034316
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2005OL04      J.Phys.(London) G31, S1935 (2005)

J.Ollier, A.Hodsdon, R.Chapman, X.Liang, M.Burns, K.Keyes, M.Labiche, A.Papenberg, K.-M.Spohr, M.Davison, G.de Angelis, M.Axiotis, B.Behera, L.Corradi, A.Gadea, A.Latina, T.Kroll, N.Marginean, T.Martinez, D.R.Napoli, A.Stefanini, M.Trotta, S.Beghini, D.Bazzacco, E.Farnea, S.Lunardi, G.Montagnoli, F.Scarlassara, A.Deacon, A.G.Smith, J.F.Smith, D.Curien, F.Haas, D.Verney, A.Jungclaus, F.Azaiez, F.Ibrahim, M.Stanoiu, Zs.Dombradi

Intruder configurations in neutron-rich P and S isotopes

NUCLEAR REACTIONS 176Yb(36S, X)34P, E=230 MeV; 208Pb(36S, X)36S/38S/34P/36P, E=215 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin. 34P deduced levels, J, π, configurations.

doi: 10.1088/0954-3899/31/10/105
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2004OL05      Eur.Phys.J. A 20, 111 (2004)

J.Ollier, R.Chapman, X.Liang, M.Labiche, K.-M.Spohr, M.Davison, G.de Angelis, M.Axiotis, T.Kroll, D.R.Napoli, T.Martinez, D.Bazzacco, E.Farnea, S.Lunardi, A.G.Smith

The yrast spectroscopy of neutron-rich nuclei produced in deep-inelastic processes

NUCLEAR REACTIONS 176Yb(36S, X), E=230 MeV; measured Eγ, Iγ, γγ-coin. 176Hf deduced transitions. 41Cl deduced levels, J, π.

doi: 10.1140/epja/i2002-10334-y
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2003OL03      Phys.Rev. C 67, 024302 (2003)

J.Ollier, R.Chapman, X.Liang, M.Labiche, K.-M.Spohr, M.Davison, G.de Angelis, M.Axiotis, T.Kroll, D.R.Napoli, T.Martinez, D.Bazzacco, E.Farnea, S.Lunardi, A.G.Smith

Yrast states in neutron-rich 41Cl

NUCLEAR REACTIONS 176Yb(36S, X)41Cl, E=230 MeV; measured Eγ, Iγ, γγ-coin. 41Cl deduced levels, possible J, π. GASP array.

doi: 10.1103/PhysRevC.67.024302
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