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NSR database version of April 24, 2024.

Search: Author = A.Astier

Found 141 matches.

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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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2022LV01      Phys.Lett. B 824, 136840 (2022)

B.F.Lv, C.M.Petrache, E.A.Lawrie, S.Guo, A.Astier, K.K.Zheng, H.J.Ong, J.G.Wang, X.H.Zhou, Z.Y.Sun, P.T.Greenlees, H.Badran, T.Calverley, D.M.Cox, T.Grahn, J.Hilton, R.Julin, S.Juutinen, J.Konki, J.Pakarinen, P.Papadakis, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo, B.Cederwall, A.Ertoprak, H.Liu, I.Kuti, J.Timar, A.Tucholski, J.Srebrny, C.Andreoiu

Evidence against the wobbling nature of low-spin bands in ¹³⁵Pr

NUCLEAR REACTIONS ¹⁰⁰Mo(⁴⁰Ar, 4np), E=152 MeV; measured reaction products, Eγ, Iγ, γ-γ-γ-coin.; deduced γ-ray energies and intensities, J, π, level scheme, negative-parity bands, angular correlations, phonon wobbling bands. Quasiparticle-plus-triaxial-rotor model calculations.

doi: 10.1016/j.physletb.2021.136840
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2022LV02      Phys.Rev. C 105, 034302 (2022)

B.F.Lv, C.M.Petrache, R.Budaca, A.Astier, K.K.Zheng, P.Greenlees, H.Badran, T.Calverley, D.M.Cox, T.Grahn, J.Hilton, R.Julin, S.Juutinen, J.Konki, J.Pakarinen, P.Papadakis, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo, B.Cederwall, A.Ertoprak, H.Liu, S.Guo, J.G.Wang, H.J.Ong, X.H.Zhou, Z.Y.Sun, I.Kuti, J.Timar, A.Tucholski, J.Srebrny, C.Andreoiu

Experimental evidence for transverse wobbling bands in ¹³⁶Nd

NUCLEAR REACTIONS ¹⁰⁰Mo(⁴⁰Ar, 4n)¹³⁶Nd, E=152 MeV; analyzed γ-ray measurements reported in their previous articles: 2018Pe07, 2018Lv01, 2019Pe21 and 2020Pe07 (Phys. Rev. C 97, 041304(R); ibid 98, 044304; 100, 054319; 102, 014311). ¹³⁶Nd; deduced levels, J, π, γ-ray asymmetry ratios for 751- and 781-keV γ rays, linear polarization for 751-keV γ ray, multipolarity, B(M1)/B(E2) and B(E2)/B(E2) ratios, transverse one-phonon and zero-phonon wobbling-mode bands, and configurations. Comparison with theoretical calculations using a new particle-rotor model coupling the total angular momentum of two quasiparticles to a triaxial core in an orthogonal geometry.

doi: 10.1103/PhysRevC.105.034302
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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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2022RE10      Phys.Rev. C 106, 014320 (2022)

K.Rezynkina, D.D.Dao, G.Duchene, J.Dudouet, F.Nowacki, E.Clement, A.Lemasson, C.Andreoiu, A.Astier, G.de Angelis, G.de France, C.Delafosse, I.Deloncle, F.Didierjean, Z.Dombradi, C.Ducoin, A.Gadea, A.Gottardo, D.Guinet, B.Jacquot, P.Jones, T.Konstantinopoulos, I.Kuti, A.Korichi, S.M.Lenzi, G.Li, F.Le Blanc, C.Lizarazo, R.Lozeva, G.Maquart, B.Million, C.Michelagnoli, D.R.Napoli, A.Navin, R.M.Perez-Vidal, C.M.Petrache, N.Pietralla, D.Ralet, M.Ramdhane, M.Rejmund, O.Stezowski, C.Schmitt, D.Sohler, D.Verney

Structure of ⁸³As, ⁸⁵As, and ⁸⁷As: From semimagicity to γ softness

NUCLEAR REACTIONS ⁹Be(²³⁸U, X)⁸³As/⁸⁵As/⁸⁷As, E=6.2 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin, γγ-coin using the VAMOS++ spectrometer for particle detection and AGATA array for γ radiation at GANIL facility. ^83,85,87As; deduced levels, J, π, collectivity in a prolate deformed, γ-soft regime in the open shell nuclei. Comparison with shell-model calculations. Systematics of energies of 9/2+ states in ^83,85,87,89As, ^85,87,89,91Br, ^87,89,91,93Rb, ^89,91,93,95Y from experimental data and large-scale shell-model calculations.

NUCLEAR STRUCTURE ^85,87As; calculated levels, J, π, potential energy surfaces (PES) in (β, γ) planes, wave functions amplitudes in K-quantum numbers. Large-scale shell-model calculations, SU3 symmetries, and beyond mean-field calculations.

doi: 10.1103/PhysRevC.106.014320
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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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2021DI09      Phys.Rev. C 104, 064304 (2021)

B.Ding, C.M.Petrache, S.Guo, E.A.Lawrie, I.Wakudyanaye, Z.H.Zhang, H.L.Wang, H.Y.Meng, D.Mengoni, Y.H.Qiang, J.G.Wang, C.Andreoiu, A.Astier, A.Avaa, T.Back, R.A.Bark, D.Bazzacco, A.Boso, T.D.Bucher, B.Cederwall, M.V.Chisapi, H.L.Fan, F.Galtarossa, F.H.Garcia, A.Goasduff, G.Jaworski, P.Jones, I.Kuti, J.J.Lawrie, G.S.Li, R.Li, M.L.Liu, Z.Liu, B.Lomberg, B.F.Lv, T.Marchlewski, L.Mdletshe, L.Msebi, S.H.Mthembu, D.R.Napoli, A.Netshiya, M.F.Nkalanga, J.N.Orce, K.Ortner, F.Recchia, S.Riccetto, A.Rohilla, T.W.Seakamela, M.Siciliano, M.A.Sithole, D.Sohler, J.Srebrny, D.Testov, A.Tucholski, J.J.Valiente-Dobon, F.Wentzel, K.Whitmore, Y.H.Zhang, K.K.Zheng, X.H.Zhou, B.R.Zikhali

Signature splitting of the g_7/2 [404] 7/2⁺ bands in ¹³¹Ba and ¹³³Ce

NUCLEAR REACTIONS ¹²²Sn(¹³C, 4nγ)¹³¹Ba, E=65 MeV from XTU Tandem accelerator at LNL-Legnaro; ¹²⁵Te(¹²C, 4nγ)¹³³Ce, E=57 MeV from separated sector cyclotron of iThemba LABS; measured Eγ, Iγ, γγ-coin, γγ(θ) using GALILEO array of 25 Compton-suppressed HPGe detectors, EUCLIDES silicon ball for charged particles and the Neutron Wall array for neutrons for ¹³¹Ba at Legnaro, and AFRODITE array of eight Compton-suppressed clover detectors for ¹³³Ce at iThemba LABS. ¹³¹Ba, ¹³³Ce; deduced high-spin levels, multipolarities, J, π, bands, quasiparticle alignments, dynamical moments of inertia, signature splittings and configurations. Comparison with cranked shell model and quasiparticle-plus-triaxial-rotor model calculations.

doi: 10.1103/PhysRevC.104.064304
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2021FE09      Phys.Rev. C 104, 054316 (2021)

A.Fernandez, A.Jungclaus, P.Golubev, D.Rudolph, L.G.Sarmiento, A.Gargano, H.Naidja, A.Astier, E.Dupont, A.Gadea, E.Nacher, A.Perea, K.Wimmer, E.Clement, G.Fremont, J.Goupil, C.Houarner, B.Jacquot, A.Korichi, A.Lemasson, H.J.Li, J.Ljungvall, L.Menager, R.M.Perez-Vidal, C.M.Petrache, D.Ralet, J.A.Ropert, F.Saillant, A.Saamark-Roth, G.S.Simpson, C.Spitaels, M.Zielinska, S.Ansari, J.Dudouet, A.Illana, M.Jurado, D.Kocheva, N.Lalovic, Ch.Lorenz, B.Quintana, G.Rainovski, N.Redon, G.Tocabens, D.Barrientos, G.Benzoni, B.Birkenbach, A.J.Boston, H.C.Boston, A.Bracco, M.Ciemala, J.Collado, D.M.Cullen, C.Domingo-Pardo, J.Eberth, V.Gonzalez, L.J.Harkness-Brennan, H.Hess, D.S.Judson, W.Korten, S.Leoni, A.Maj, R.Menegazzo, D.Mengoni, C.Michelagnoli, B.Million, D.R.Napoli, J.Nyberg, Zs.Podolyak, A.Pullia, P.Reiter, E.Sanchis, O.Stezowski, Ch.Theisen, J.J.Valiente-Dobon

Reinterpretation of excited states in ²¹²Po: Shell-model multiplets rather than α-cluster states

NUCLEAR REACTIONS ¹²C(²⁰⁸Pb, ²¹²Po)⁸Be, E=1187 MeV; measured Eγ, Iγ, (particle)γ-coin, (particle)γγ-coin, γγ(linear polarization) using 35 36-fold segmented AGATA crystals arranged in 12 triple clusters for γ detection and double-sided silicon strip detector (DSSSD) for particle detection. ²¹²Po; deduced levels, J, π, multipolarities, configurations, exclusive reaction cross sections. Comparisons with shell-model calculations, with structure of ¹⁴⁸Gd, and with earlier experimental results. Discussed previous interpretation as α-cluster states.

NUCLEAR STRUCTURE ²¹²Po; calculated levels, J, π, configurations, γ-ray branching ratios, B(M1), B(E2), wave-function decomposition for the yrast and yrare states using shell model with KHPE and H208 interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.104.054316
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2021LV01      Phys.Rev. C 103, 044308 (2021)

B.F.Lv, C.M.Petrache, E.A.Lawrie, A.Astier, E.Dupont, K.K.Zheng, P.Greenlees, H.Badran, T.Calverley, D.M.Cox, T.Grahn, J.Hilton, R.Julin, S.Juutinen, J.Konki, J.Pakarinen, P.Papadakis, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo, B.Cederwall, A.Ertoprak, H.Liu, S.Guo, J.G.Wang, H.J.Ong, X.H.Zhou, Z.Y.Sun, I.Kuti, J.Timar, A.Tucholski, J.Srebrny, C.Andreoiu

Tilted precession bands in ¹³⁵Nd

NUCLEAR REACTIONS ¹⁰⁰Mo(⁴⁰Ar, 5n)¹³⁵Nd, E=152 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(two-angle, anisotropy ratio), γ(θ), γγ(linear polarization) using JUROGAM II spectrometer with 39 Compton-suppressed Ge detectors at the K130 Cyclotron facility of the University of Jyvaskyla. ¹³⁵Nd; deduced high-spin levels, J, π, rotational bands, multipolarities, mixing ratios, B(M1)_out/B(E2)_in and B(E2)_out/B(E2)_in ratios, configurations. Comparison with quasiparticle-plus-triaxial-rotor model calculations. Observed bands described as tilted precession (TiP) bands instead of wobbling bands. Discussed nuclear triaxiality, and similarities and differences between tilted precession bands (TiP) and wobbling bands.

doi: 10.1103/PhysRevC.103.044308
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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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Data from this article have been entered in the XUNDL database. For more information, click here.

2020DU01      Phys.Rev. C 101, 014309 (2020)

E.Dupont, A.Astier, C.M.Petrache, B.F.Lv, I.Deloncle, J.Kiener, R.Orlandi, H.Makii, K.Nishio, K.Hirose, M.Asai, T.K.Sato, K.Tsukada, Y.Ito, K.R.Kean, R.Yanagihara, G.Scamps

New excited 2⁺ and 3^- two-proton states in ²¹⁰₈₄Po₁₂₆ populated by two-proton transfer

NUCLEAR REACTIONS ²⁰⁸Pb(¹²C, ¹⁰Be)⁹Be/¹⁰Be/¹¹B/¹²C/¹³C, ¹⁴C/²¹⁰Po, E=58, 60, 62, 63.7 MeV; measured reaction products, light beamlike ejectiles, Eγ, Iγ, (charged particles)γ-coin at the 18 MV tandem of JAEA Tokai. ²¹⁰Po; deduced six 2+ and three 3- levels in two-proton stripping reaction, configurations.

doi: 10.1103/PhysRevC.101.014309
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2020GU16      Phys.Lett. B 807, 135572 (2020)

S.Guo, C.M.Petrache, D.Mengoni, Y.H.Qiang, Y.P.Wang, Y.Y.Wang, J.Meng, Y.K.Wang, S.Q.Zhang, P.W.Zhao, A.Astier, J.G.Wang, H.L.Fan, E.Dupont, B.F.Lv, D.Bazzacco, A.Boso, A.Goasduff, F.Recchia, D.Testov, F.Galtarossa, G.Jaworski, D.R.Napoli, S.Riccetto, M.Siciliano, J.J.Valiente-Dobon, M.L.Liu, G.S.Li, X.H.Zhou, Y.H.Zhang, C.Andreoiu, F.H.Garcia, K.Ortner, K.Whitmore, A.Atac Nyberg, T.Back, B.Cederwall, E.A.Lawrie, I.Kuti, D.Sohler, T.Marchlewski, J.Srebrny, A.Tucholski

Evidence for pseudospin-chiral quartet bands in the presence of octupole correlations

NUCLEAR STRUCTURE ¹³¹Ba; analyzed available data; calculated B(E1), three pairs of nearly degenerate doublet bands using the reflection-asymmetric triaxial particle rotor model.

doi: 10.1016/j.physletb.2020.135572
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2020GU21      Phys.Rev. C 102, 044320 (2020)

S.Guo, C.M.Petrache, D.Mengoni, Y.X.Liu, Q.B.Chen, Y.H.Qiang, A.Astier, E.Dupont, K.K.Zheng, J.G.Wang, B.Ding, B.F.Lv, M.L.Liu, Y.D.Fang, X.H.Zhou, D.Bazzacco, A.Boso, A.Goasduff, F.Recchia, D.Testov, F.Galtarossa, G.Jaworski, D.R.Napoli, S.Riccetto, M.Siciliano, J.J.Valiente-Dobon, C.Andreoiu, F.H.Garcia, K.Ortner, K.Whitmore, B.Cederwall, E.A.Lawrie, I.Kuti, D.Sohler, T.Marchlewski, J.Srebrny, A.Tucholski

Pseudospin partner bands in ¹³⁰Ba

NUCLEAR REACTIONS ¹²²Sn(¹³C, 5n), E=65 MeV; measured Eγ, Iγ, γγ-, (particle)γ, nγ-coin, γγ(θ) at two points using the GALILEO array coupled to the EUCLIDES and Neutron Wall detector arrays at the XTU Tandem accelerator of LNL-Legnaro. ¹³⁰Ba; deduced high-spin levels, J, π, multipolarities, mixing ratios, bands, B(M1)/B(E2), alignment plots, moments of inertia, signature and pseudospin splittings of bands, configurations. Comparison with projected shell model (PSM) and the particle rotor model (PRM) calculations.

doi: 10.1103/PhysRevC.102.044320
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2020PE07      Phys.Rev. C 102, 014311 (2020)

C.M.Petrache, N.Minkov, T.Nakatsukasa, B.F.Lv, A.Astier, E.Dupont, K.K.Zheng, P.Greenlees, H.Badran, T.Calverley, D.M.Cox, T.Grahn, J.Hilton, R.Julin, S.Juutinen, J.Konki, J.Pakarinen, P.Papadakis, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo, B.Cederwall, A.Ertoprak, H.Liu, S.Guo, M.L.Liu, J.G.Wang, X.H.Zhou, I.Kuti, J.Timar, A.Tucholski, J.Srebrny, C.Andreoiu

Signatures of enhanced octupole correlations at high spin in ¹³⁶Nd

NUCLEAR REACTIONS ¹⁰⁰Mo(⁴⁰Ar, 4n), E=152 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO) using the JUROGAM II array at the University of Jyvaskyla. Enriched target. ¹³⁶Nd; deduced high-spin levels, J, π, multipolarities, bands, B(E1)/B(E2) ratios, electric dipole moments D₀, configurations, alignments, enhanced octupole correlations at high spins. Comparison with cranked quasiparticle random phase approximation (QRPA) calculations, and with quadrupole-octupole rotations model (QORM).

doi: 10.1103/PhysRevC.102.014311
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2020PE10      Eur.Phys.J. A 56, 208 (2020)

C.M.Petrache, B.F.Lv, Q.B.Chen, J.Meng, A.Astier, E.Dupont, K.K.Zheng, P.T.Greenlees, H.Badran, T.Calverley, D.M.Cox, T.Grahn, J.Hilton, R.Julin, S.Juutinen, J.Konki, J.Pakarinen, P.Papadakis, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo, B.Cederwall, A.Ertoprak, H.Liu, S.Guo, J.G.Wang, X.H.Zhou, I.Kuti, J.Timar, A.Tucholski, J.Srebrny, C.Andreoiu

Multiple chiral bands in ¹³⁷Nd

NUCLEAR REACTIONS ¹⁰⁰Mo(⁴⁰Ar, 3n), E=152 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced γ-ray energies and intensities, B(M1)/B(E2), quasi-particle alignments for the chiral rotational bands, angular momenta. Comparison with theoretical calculations.

doi: 10.1140/epja/s10050-020-00218-5
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2019DU18      Phys.Rev. C 100, 011301 (2019)

J.Dudouet, A.Lemasson, G.Maquart, F.Nowacki, D.Verney, M.Rejmund, G.Duchene, O.Stezowski, E.Clement, C.Michelagnoli, A.Korichi, C.Andreoiu, A.Astier, G.de Angelis, G.de France, C.Delafosse, I.Deloncle, F.Didierjean, Z.Dombradi, C.Ducoin, A.Gadea, A.Gottardo, D.Guinet, B.Jacquot, P.Jones, T.Konstantinopoulos, I.Kuti, F.Le Blanc, S.M.Lenzi, G.Li, R.Lozeva, B.Million, D.R.Napoli, A.Navin, R.M.Perez-Vidal, C.M.Petrache, D.Ralet, M.Ramdhane, N.Redon, C.Schmitt, D.Sohler

Excitations of the magic N=50 neutron-core revealed in ⁸¹Ga

NUCLEAR REACTIONS ⁹Be(²³⁸U, F)⁷²Ga/⁷³Ga/⁷⁴Ga/⁷⁵Ga/⁷⁶Ga/⁷⁷Ga/⁷⁸Ga/⁷⁹Ga/⁸⁰Ga/⁸¹Ga/⁸²Ga/⁸³Ga/⁸¹Ge/⁸¹As/⁸¹Se, E=6.2 MeV/nucleon; measured yields of fission fragments, Eγ, Iγ, (fragment)γ- and γγ-coin using the VAMOS++ spectrometer for fragment identification and AGATA array for γ detection at GANIL. ⁸¹Ga; deduced high-spin levels, J, π. Systematics of shell gap in N=50 isotones: ⁷⁸Ni, ⁷⁹Cu, ⁸⁰Zn, ⁸¹Ga, ⁸²Ge, ⁸³As, ⁸⁴Se. Comparison with state-of-the-art large-scale shell model (LSSM) calculations.

NUCLEAR STRUCTURE ⁷⁸Ni, ⁸¹Ga; calculated levels, J, π and decomposition of the wave functions for states in the two nuclide. Large-scale shell model (LSSM) calculations.

doi: 10.1103/PhysRevC.100.011301
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2019LV01      Phys.Rev. C 100, 024314 (2019), Erratum Phys.Rev. C 103, 019901 (2021)

B.F.Lv, C.M.Petrache, Q.B.Chen, J.Meng, A.Astier, E.Dupont, P.Greenlees, H.Badran, T.Calverley, D.M.Cox, T.Grahn, J.Hilton, R.Julin, S.Juutinen, J.Konki, J.Pakarinen, P.Papadakis, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo, B.Cederwall, A.Ertoprak, H.Liu, S.Guo, M.L.Liu, J.G.Wang, X.H.Zhou, I.Kuti, J.Timar, A.Tucholski, J.Srebrny, C.Andreoiu

Chirality of ¹³⁵Nd reexamined: Evidence for multiple chiral doublet bands

NUCLEAR REACTIONS ¹⁰⁰Mo(⁴⁰Ar, 5n), E=152 MeV from the K130 cyclotron at the University of Jyvaskyla; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), angular distribution ratios using the JUROGAM-II array, with 39 Compton-suppressed Ge detectors. ¹³⁵Nd; deduced high-spin levels, J, π, multipolarities, rotational and two sets of chiral-doublet bands, alignments, B(M1)/B(E2) ratios, configurations. Comparison with constrained density functional theory (CDFT) and particle-rotor model (PRM) calculations.

doi: 10.1103/PhysRevC.100.024314
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2019MA71      Phys.Rev. C 100, 044610 (2019)

H.Makii, K.Nishio, K.Hirose, R.Orlandi, R.Leguillon, T.Ogawa, T.Soldner, U.Koster, A.Pollitt, F.-J.Hambsch, I.Tsekhanovich, M.Aiche, S.Czajkowski, L.Mathieu, C.M.Petrache, A.Astier, S.Guo, T.Ohtsuki, S.Sekimoto, K.Takamiya, R.J.W.Frost, T.Kawano

Effects of the nuclear structure of fission fragments on the high-energy prompt fission γ-ray spectrum in ²³⁵U(n_th, f)

NUCLEAR REACTIONS ²³⁵U(n, F), E=cold neutrons; measured fission fragments, Eγ, Iγ, prompt fission γ-ray spectra (PFGS), (fragment)(fragment)- and (fragment)γ-coin, time of flight using two MWPCs and two LaBr3(Ce) scintillators at the PF1B cold-neutron beam facility of ILL-Grenoble; deduced fission-fragment mass distribution, average γ and neutron multiplicities as function of fragment mass. Comparison of the present and previous experimental data with statistical Hauser-Feshbach model calculations for PFGS.

doi: 10.1103/PhysRevC.100.044610
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2019PE06      Phys.Rev. C 99, 024303 (2019)

C.M.Petrache, J.-M.Regis, C.Andreoiu, M.Spieker, C.Michelagnoli, P.E.Garrett, A.Astier, E.Dupont, F.Garcia, S.Guo, G.Hafner, J.Jolie, F.Kandzia, V.Karayonchev, Y.-H.Kim, L.Knafla, U.Koster, B.F.Lv, N.Marginean, C.Mihai, P.Mutti, K.Ortner, C.Porzio, S.Prill, N.Saed-Samii, W.Urban, J.R.Vanhoy, K.Whitmore, J.Wisniewski, S.W.Yates

Collectivity of the 2p-2h proton intruder band of ¹¹⁶Sn

NUCLEAR REACTIONS ¹¹⁵Sn(n, γ), E=thermal; measured Eγ, Iγ, γγ-coin, half-lives of levels using γγ-coin fast timing technique at ILL-Grenoble. ¹¹⁶Sn; deduced levels, J, π, B(E2) values of states in the normal and intruder configurations. Comparison with previous measurements, and with theoretical predictions using IBM-2. Systematics of levels, J, π and half-lives in ^{110,112,114,116,118,120,122}Sn.

doi: 10.1103/PhysRevC.99.024303
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2019PE08      Phys.Rev. C 99, 041301 (2019)

C.M.Petrache, S.Frauendorf, B.F.Lv, A.Astier, E.Dupont, S.Guo, M.L.Liu, X.H.Zhou, K.L.Wang, P.T.Greenlees, H.Badran, D.M.Cox, T.Grahn, R.Julin, S.Juutinen, J.Konki, J.Pakarinen, P.Papadakis, J.Partanen, P.Rahkila, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo, B.Cederwall, O.Aktas, A.Ertoprak, H.Liu, I.Kuti, J.Timar, A.Tucholski, J.Srebrny, C.Andreoiu

Collective rotation of an oblate nucleus at very high spin

NUCLEAR REACTIONS ¹⁰⁰Mo(⁴⁰Ar, X), E=152 MeV; measured Eγ, Iγ, γγ-coin using the JUROGAM II array at the University of Jyvaskyla. ¹³⁷Nd; deduced levels, J, π, extremely regular rotational band, highly-deformed band and a triaxial band, antimagnetic rotational band, alignments; calculated deformation trajectories, potential energy surfaces, and single particle Routhians for different bands using Cranked mean-field calculations of the Nilsson-Strutinsky type.

doi: 10.1103/PhysRevC.99.041301
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2019PE12      Phys.Lett. B 795, 241 (2019)

C.M.Petrache, P.M.Walker, S.Guo, Q.B.Chen, S.Frauendorf, Y.X.Liu, R.A.Wyss, D.Mengoni, Y.H.Qiang, A.Astier, E.Dupont, R.Li, B.F.Lv, K.K.Zheng, D.Bazzacco, A.Boso, A.Goasduff, F.Recchia, D.Testov, F.Galtarossa, G.Jaworski, D.R.Napoli, S.Riccetto, M.Siciliano, J.J.Valiente-Dobon, M.L.Liu, X.H.Zhou, J.G.Wang, C.Andreoiu, F.H.Garcia, K.Ortner, K.Whitmore, T.Back, B.Cederwall, E.A.Lawrie, I.Kuti, D.Sohler, J.Timar, T.Marchlewski, J.Srebrny, A.Tucholski

Diversity of shapes and rotations in the γ-soft ¹³⁰Ba nucleus: First observation of a t-band in the A = 130 mass region

NUCLEAR REACTIONS ¹²²Sn(¹³C, 5n), E=65 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, B(M1)/B(E2), quasiparticle t-band and the odd-spin partners of the S-bands built on prolate 2qp-proton and oblate 2qp-neutron configurations. Comparison with theoretical calculations.

doi: 10.1016/j.physletb.2019.06.040
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2019PE21      Phys.Rev. C 100, 054319 (2019)

C.M.Petrache, B.F.Lv, A.Astier, E.Dupont, K.K.Zheng, P.T.Greenlees, H.Badran, T.Calverley, D.M.Cox, T.Grahn, J.Hilton, R.Julin, S.Juutinen, J.Konki, J.Pakarinen, P.Papadakis, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo, B.Cederwall, O.Aktas, A.Ertoprak, H.Liu, S.Guo, M.L.Liu, J.G.Wang, X.H.Zhou, I.Kuti, J.Timar, A.Tucholski, J.Srebrny, C.Andreoiu

Highly deformed bands in Nd nuclei: New results and consistent interpretation within the cranked Nilsson-Strutinsky formalism

NUCLEAR REACTIONS ¹⁰⁰Mo(⁴⁰Ar, 4n), (⁴⁰Ar, 3n), E=152 MeV; measured Eγ, Iγ, γγ-coin using the JUROGAM II array at the K130 Cyclotron at the University of Jyvaskyla. ^136,137Nd; deduced high-spin levels, J, π, highly-deformed rotational bands, configurations; calculated single-particle neutron Routhians. Comparison with extended cranked Nilsson-Strutinsky (CNS) calculations.

doi: 10.1103/PhysRevC.100.054319
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2019QI01      Phys.Rev. C 99, 014307 (2019)

Y.H.Qiang, C.M.Petrache, S.Guo, P.M.Walker, D.Mengoni, Q.B.Chen, B.F.Lv, A.Astier, E.Dupont, M.L.Liu, X.H.Zhou, J.G.Wang, D.Bazzacco, A.Boso, A.Goasduff, F.Recchia, D.Testov, F.Galtarossa, G.Jaworski, D.R.Napoli, S.Riccetto, M.Siciliano, J.J.Valiente-Dobon, C.Andreoiu, F.H.Garcia, K.Ortner, K.Whitmore, B.Cederwall, E.A.Lawrie, I.Kuti, D.Sohler, T.Marchlewski, J.Srebrny, A.Tucholski, A.C.Dai, F.R.Xu

Identification of high-K rotation in ¹³⁰Ba: Testing the consistency of electromagnetic observables

NUCLEAR REACTIONS ¹²²Sn(¹³C, 5n), E=65 MeV; measured Eγ, Iγ, γγ- and (particle)γ-coin, γγ(θ) using GALILEO array of 25 Compton-suppressed Ge detectors for γ detection, EUCLIDES silicon detector array for charged particles, and the Neutron Wall for neutron detection at the XTU Tandem accelerator facility of INFN-LNL-Legnaro. ¹³⁰Ba; deduced high-spin levels, J, π, bands, band built on a millisecond Kπ=8- isomer, multipolarities, mixing ratios, configuration, B(E2) ratios, (g_K-g_R)/Q₀ ratios, alignments for the g.s. and Kπ=8- bands, moment of inertia for the 8- band. Systematics of energies relative to a rigid rotor for the bands built on the Kπ=8- isomers in N=74 isotones: ¹²⁸Xe, ¹³⁰Ba, ¹³²Ce, ¹³⁴Nd, ¹³⁶Sm, ¹³⁸Gd. Comparison with particle-rotor model calculations.

doi: 10.1103/PhysRevC.99.014307
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2019TU09      Phys.Rev. C 100, 014330 (2019)

A.Tucholski, Ch.Droste, J.Srebrny, C.M.Petrache, J.Skalski, P.Jachimowicz, M.Fila, T.Abraham, M.Kisielinski, A.Kordyasz, M.Kowalczyk, J.Kownacki, T.Marchlewski, P.J.Napiorkowski, L.Prochniak, J.Samorajczyk-Pysk, A.Stolarz, A.Astier, B.F.Lv, E.Dupont, S.Lalkovski, P.Walker, E.Grodner, Z.Patyk

Lifetime of the recently identified 10⁺ isomeric state at 3279 keV in the ¹³⁶Nd nucleus

NUCLEAR REACTIONS ¹²⁰Sn(²⁰Ne, 4n), E=85 MeV; measured Eγ, Iγ, γγ-coin, level half-lives using recoil-distance Doppler shift (RDDS) method with a plunger device using the EAGLE array of 16 HPGe detector at the U-200P cyclotron facility of the Heavy Ion Laboratory in Warsaw. ¹³⁶Nd; deduced levels, B(E1), B(E2), reduced hindrance factor for the 10+ state at 3279 keV; calculated energy surface contour in (β₂₀, β₂₂) plane, neutron and proton single-particle energies using microscopic-macroscopic approach, based on deformed Woods-Saxon single-particle potential and the Yukawa-plus-exponential macroscopic energy.

doi: 10.1103/PhysRevC.100.014330
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2018LV01      Phys.Rev. C 98, 044304 (2018)

B.F.Lv, C.M.Petrache, A.Astier, E.Dupont, A.Lopez-Martens, P.T.Greenlees, H.Badran, T.Calverley, D.M.Cox, T.Grahn, J.Hilton, R.Julin, S.Juutinen, J.Konki, M.Leino, J.Pakarinen, P.Papadakis, J.Partanen, P.Rahkila, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo, A.Herzan, B.Cederwall, A.Ertoprak, H.Liu, S.Guo, M.L.Liu, Y.H.Qiang, J.G.Wang, X.H.Zhou, I.Kuti, J.Timar, A.Tucholski, J.Srebrny, C.Andreoiu

Evolution from γ-soft to stable triaxiality in ¹³⁶Nd as a prerequisite of chirality

NUCLEAR REACTIONS ¹⁰⁰Mo(⁴⁰Ar, 4n), E=152 MeV; measured Eγ, Iγ, recoils, γγ-coin, and γγ(θ)(DCO) using JUROGAM II array for prompt γ detection, RITU separator for recoils, and GREAT detector array for recoil and delayed γ detection at the K130 cyclotron of the University of Jyvaskyla. ¹³⁶Nd; deduced high-spin levels, J, π, multipolarities, bands, dipole bands, configurations, alignments, single-particle and collective excitations, and deformation of bands. Comparison with cranked Nilsson-Strutinski (CNS) calculations.

doi: 10.1103/PhysRevC.98.044304
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2018MA12      Phys.Scr. 93, 039701 (2018)

G.Maquart, A.Astier, C.Ducoin, D.Guinet, O.Stezowski, L.Augey, L.Chaix, I.Companis, J.Dudouet, G.Lehaut, C.Mancuso, N.Redon, A.Vancraeyenest

Retraction: Backbending in the ²²³₉₀Th nucleus: presentation of the consistency of two different experiments

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, 3n)²²³Th, E=85 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, yrast bands, sharp backbending occuring at the highest spins. Please see 2017MA12 and 2017MA24.

doi: 10.1088/1402-4896/aaa84f
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2018PE07      Phys.Rev. C 97, 041304 (2018)

C.M.Petrache, B.F.Lv, A.Astier, E.Dupont, Y.K.Wang, S.Q.Zhang, P.W.Zhao, Z.X.Ren, J.Meng, P.T.Greenlees, H.Badran, D.M.Cox, T.Grahn, R.Julin, S.Juutinen, J.Konki, J.Pakarinen, P.Papadakis, J.Partanen, P.Rahkila, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo, B.Cederwall, O.Aktas, A.Ertoprak, H.Liu, S.Matta, P.Subramaniam, S.Guo, M.L.Liu, X.H.Zhou, K.L.Wang, I.Kuti, J.Timar, A.Tucholski, J.Srebrny, C.Andreoiu

Evidence of chiral bands in even-even nuclei

NUCLEAR REACTIONS ¹⁰⁰Mo(⁴⁰Ar, 4n), E=152 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO) using JUROGAM II array at the K130 Cyclotron facility of the University of Jyvaskyla. ¹³⁶Nd; deduced high-spin levels, J, π, bands, five pairs of nearly degenerate chiral doublet bands, B(M1)/B(E2), configurations, quasiparticle alignments. Comparison with theoretical calculations using three-dimensional tilted axis cranking covariant density functional theory (3D TAC-CDFT), TAC-CDFT, and multi-quasiparticle particle-rotor model (MQ-PRM). Complete level scheme and bands to appear in a forthcoming paper.

doi: 10.1103/PhysRevC.97.041304
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2017DU05      Phys.Rev.Lett. 118, 162501 (2017)

J.Dudouet, A.Lemasson, G.Duchene, M.Rejmund, E.Clement, C.Michelagnoli, F.Didierjean, A.Korichi, G.Maquart, O.Stezowski, C.Lizarazo, R.M.Perez-Vidal, C.Andreoiu, G.de Angelis, A.Astier, C.Delafosse, I.Deloncle, Z.Dombradi, G.de France, A.Gadea, A.Gottardo, B.Jacquot, P.Jones, T.Konstantinopoulos, I.Kuti, F.Le Blanc, S.M.Lenzi, G.Li, R.Lozeva, B.Million, D.R.Napoli, A.Navin, C.M.Petrache, N.Pietralla, D.Ralet, M.Ramdhane, N.Redon, C.Schmitt, D.Sohler, D.Verney, D.Barrientos, B.Birkenbach, I.Burrows, L.Charles, J.Collado, D.M.Cullen, P.Desesquelles, C.Domingo Pardo, V.Gonzalez, L.Harkness-Brennan, H.Hess, D.S.Judson, M.Karolak, W.Korten, M.Labiche, J.Ljungvall, R.Menegazzo, D.Mengoni, A.Pullia, F.Recchia, P.Reiter, M.D.Salsac, E.Sanchis, Ch.Theisen, J.J.Valiente-Dobon, M.Zielinska

⁹⁶₃₆Kr₆₀-Low-Z Boundary of the Island of Deformation at N=60

NUCLEAR REACTIONS ⁹Be(²³⁸U, X)⁹⁶Kr, E=6.2 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, R4/2. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.118.162501
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2017KO03      Phys.Rev. C 95, 014309 (2017)

T.Konstantinopoulos, P.Petkov, A.Goasduff, T.Arici, A.Astier, L.Atanasova, M.Axiotis, D.Bonatsos, P.Detistov, A.Dewald, M.J.Eller, V.Foteinou, A.Gargano, G.Georgiev, K.Gladnishki, A.Gottardo, S.Harissopulos, H.Hess, S.Kaim, D.Kocheva, A.Kusoglu, A.Lagoyannis, J.Ljungvall, R.Lutter, I.Matea, B.Melon, T.J.Mertzimekis, A.Nannini, C.M.Petrache, A.Petrovici, G.Provatas, P.Reiter, M.Rocchini, S.Roccia, M.Seidlitz, B.Siebeck, D.Suzuki, N.Warr, H.De Witte, T.Zerrouki

Lifetime measurements in ¹⁰⁰Ru

NUCLEAR REACTIONS ⁸⁸Sr(¹⁴C, 2n), E=40, 46 MeV; measured Eγ, half-lives of 2+, 4+, 6+ and 8+ yrast levels by recoil-distance Doppler shift (RDDS) and Doppler-shift attenuation method (DSAM) using ORGAM array and eight detectors from Miniball array at 15 MV Tandem accelerator of the ALTO laboratory in Orsay. ¹⁰⁰Ru; deduced levels, B(E2), not the best candidate for E(5) symmetry. Comparison with excited Vampir, shell-model calculations, and theoretical E(5) level scheme.

doi: 10.1103/PhysRevC.95.014309
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2017KO34      Eur.Phys.J. A 53, 175 (2017)

D.Kocheva, G.Rainovski, J.Jolie, N.Pietralla, A.Blazhev, A.Astier, R.Altenkirch, S.Ansari, Th.Braunroth, M.L.Cortes, A.Dewald, F.Diel, M.Djongolov, C.Fransen, K.Gladnishki, A.Hennig, V.Karayonchev, J.M.Keatings, E.Kluge, J.Litzinger, C.Muller-Gatermann, P.Petkov, M.Rudigier, M.Scheck, Ph.Scholz, P.Spagnoletti, M.Spieker, C.Stahl, R.Stegmann, M.Stoyanova, P.Thole, N.Warr, V.Werner, W.Witt, D.Wolk, K.O.Zell, P.Van Isacker, V.Yu.Ponomarev

A revised B(E2;2⁺₁ → 0⁺₁) value in the semi-magic nucleus ²¹⁰Po

NUCLEAR REACTIONS ²⁰⁸Pb(¹²C, ¹⁰Be), E=62 MeV; measured Eγ, Iγ(θ), γγ-coin, (particle)γ-coin using 11 HPGe, light reaction fragments using solar cells array. ²¹⁰Po; deduced 2⁺₁ state T_1/2 using the line shape of the transition, branching ratios to this state from upper states, B(E1), B(E2), B(E3), B(M1), T_1/2 of three states and transitions; calculated low-lying states energy, structure, B(E1), B(E2), B(E3), B(M1) using QPM (Quasiparticle Phonon Model). Compared with data.

doi: 10.1140/epja/i2017-12367-5
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2017KO38      Phys.Rev. C 96, 044305 (2017)

D.Kocheva, G.Rainovski, J.Jolie, N.Pietralla, A.Blazhev, R.Altenkirch, S.Ansari, A.Astier, M.Bast, M.Beckers, Th.Braunroth, M.Cappellazzo, A.Dewald, F.Diel, M.Djongolov, C.Fransen, K.Gladnishki, A.Goldkuhle, A.Hennig, V.Karayonchev, J.M.Keatings, E.Kluge, Th.Kroll, J.Litzinger, K.Moschner, C.Muller-Gatermann, P.Petkov, M.Scheck, Ph.Scholz, T.Schmidt, P.Spagnoletti, C.Stahl, R.Stegmann, A.Stolz, A.Vogt, N.Warr, V.Werner, D.Wolk, J.C.Zamora, K.O.Zell, V.Yu.Ponomarev, P.Van Isacker

Low collectivity of the 2⁺₁ state of ²¹²Po

NUCLEAR REACTIONS ²⁰⁸Pb(¹²C, ⁸Be)²¹²Po, E=64 MeV; measured Eγ, Iγ, (particle)γ-coin, half-life of the first 2+ state by recoil-distance Doppler-shift (RDDS) method at the FN Tandem facility of the University of Cologne. ²¹²Po; deduced levels, J, π, B(E2). Comparisons with levels and B(E2) of ²¹⁰Po and ²¹⁰Pb, and with theoretical calculations using shell model. Systematics of B(E2) values for the first 2+ states in ²⁰Ne, ⁴⁴Ti, ⁵²Ti, ¹³⁶Te, ²¹²Po, nuclei with two valence protons and two valence neutrons.

doi: 10.1103/PhysRevC.96.044305
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2017MA12      Phys.Rev. C 95, 034304 (2017); Erratum Phys.Rev. C 98, 019902 (2018)

G.Maquart, L.Augey, L.Chaix, I.Companis, C.Ducoin, J.Dudouet, D.Guinet, G.Lehaut, C.Mancuso, N.Redon, O.Stezowski, A.Vancraeyenest, A.Astier, F.Azaiez, S.Courtin, D.Curien, I.Deloncle, O.Dorvaux, G.Duchene, B.Gall, T.Grahn, P.Greenlees, A.Herzan, K.Hauschild, U.Jakobsson, P.Jones, R.Julin, S.Juutinen, S.Ketelhut, M.Leino, A.Lopez-Martens, P.Nieminen, P.Petkov, P.Peura, M.-G.Porquet, P.Rahkila, S.Rinta-Antila, M.Rousseau, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo

Backbending in the pear-shaped ²²³₉₀Th nucleus: Evidence of a high-spin octupole to quadrupole shape transition in the actinides

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, 3n), E=85 MeV; measured Eγ, Iγ, γγ-coin, angular distribution ADO ratios using EUROBALL IV array at IReS-Strasbourg Vivitron facility. ²²³Th; deduced high-spin levels, J, π, multipolarity, alternating-parity reflection-symmetric bands classified in terms of simplex quantum numbers, backbending, alignments, high-spin octupole to quadrupole shape transition. Systematics of splitting between states with opposite parity within the same rotational band in ^221,223,225Th.

doi: 10.1103/PhysRevC.95.034304
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2017MA24      Phys.Scr. 92, 064004 (2017) see keynumber 2018MA12

G.Maquart, A.Astier, C.Ducoin, D.Guinet, O.Stezowski, L.Augey, L.Chaix, I.Companis, J.Dudouet, G.Lehaut, C.Mancuso, N.Redon, A.Vancraeyenest

Backbending in the ²²³₉₀Th nucleus: presentation of the consistency of two different experiments

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, 3n), E=85 MeV; measured reaction products, Eγ, Iγ, γ-γ-γ-coin.; deduced energy levels, J, π, kinematic moment of inertia for both positive and negative parity states.

doi: 10.1088/1402-4896/aa6e8b
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2016KO03      Phys.Rev. C 93, 011303 (2016)

D.Kocheva, G.Rainovski, J.Jolie, N.Pietralla, C.Stahl, P.Petkov, A.Blazhev, A.Hennig, A.Astier, Th.Braunroth, M.L.Cortes, A.Dewald, M.Djongolov, C.Fransen, K.Gladnishki, V.Karayonchev, J.Litzinger, C.Muller-Gatermann, M.Scheck, Ph.Scholz, R.Stegmann, P.Thole, V.Werner, W.Witt, D.Wolk, P.Van Isacker

Low-lying isovector 2⁺ valence-shell excitations of ²¹²Po

NUCLEAR REACTIONS ²⁰⁸Pb(¹²C, 2α)²¹²Po, E=62 MeV; measured Eγ, Iγ, (particle)γ-, γγ-coin, enriched target, level half-lives by DSAM and line-shape analysis using an array of 12 HPGe detectors for γ detection, and solar cell array for reaction products at FN Tandem facility of the University of Cologne. ²¹²Po; deduced levels, J, π, B(M1), B(E2) of second and third 2+ states as candidates for one-phonon mixed-symmetry states (MSS). Comparison with simple single-j shell model calculation. ²¹¹Po; observed γ rays. ^209,210Po, ²⁰⁸Pb, ²⁰⁹Bi; reaction products measured in coincidence with γ rays.

doi: 10.1103/PhysRevC.93.011303
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2015KA06      Phys.Rev. C 91, 024318 (2015)

S.Kaim, C.M.Petrache, A.Gargano, N.Itaco, T.Zerrouki, R.Leguillon, A.Astier, I.Deloncle, T.Konstantinopoulos, J.M.Regis, D.Wilmsen, B.Melon, A.Nannini, C.Ducoin, D.Guinet, T.Bhattacharjee

High-spin spectroscopy of ¹³⁹Ce

NUCLEAR REACTIONS ¹³⁰Te(¹⁴C, 5n), E=82 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(θ)(anisotropy ratio) using ORGAM array at IPN-Orsay tandem accelerator facility. ¹³⁹Ce; deduced high-spin levels, J, π, multipolarity, magnetic-dipole rotational band, configuration, B(M1)/B(E2). Comparison with Tilted-axis (TAC) and cranked Nilsson Strutinsky (CNS) calculations. ^139,140Ce; calculated levels, J, π using shell model with OSLO code; comparison with experimental data.

doi: 10.1103/PhysRevC.91.024318
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2014AS01      Eur.Phys.J. A 50, 2 (2014)

A.Astier, M.-G.Porquet, Ts.Venkova, Ch.Theisen, G.Duchene, F.Azaiez, G.Barreau, D.Curien, I.Deloncle, O.Dorvaux, B.J.P.Gall, M.Houry, R.Lucas, N.Redon, M.Rousseau, O.Stezowski

High-spin structures of ^124-131Te: Competition of proton- and neutron-pair breakings

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, X), E=85 MeV;²³⁸U(¹²C, X), E=90 MeV; measured thick target prompt Eγ, Iγ, γγ-coin using unsuppressed Ge detectors, delayed and off-line Eγ, Iγ, γγ-coin. ^{124,125,126,127,128,129,130,131,132,134}Te deduced levels, J, π, γ transitions. ^128,130Te deduced isomeric transitions, T_1/2. ^{126,128,130,132}Te deduced isomeric and/or some other states B(E1), B(E2). ^125,126Sn, ^{128,129,130,131}Te calculated high-spin states using shell model. Compared with data.

doi: 10.1140/epja/i2014-14002-5
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2014AS02      Phys.Rev. C 89, 034310 (2014)

A.Astier, T.Konstantinopoulos, M.-G.Porquet, M.Houry, R.Lucas, Ch.Theisen

High-spin structures of ¹³⁸₅₇La₈₁

NUCLEAR REACTIONS ²³⁸U(¹²C, F), E=90 MeV; measured Eγ, Iγ, γγγ-coin, Eγ from complementary ^101,102Nb fragments, isomer half-life using Euroball array at Legnaro XTU Tandem accelerator facility. ¹³⁸La; deduced high-spin levels, isomer, J, π, multipolarity, configurations. Comparison with shell-model (SM) calculations, and with previous experimental data. ^101,102Nb; measured intensity ratios of two γ rays in doubly gated spectra with ^137,138,139La γ rays.

NUCLEAR STRUCTURE ¹³⁸La; calculated levels, J, π, seniority-2 basis states using shell model with SN100PN effective interaction. Comparison with experimental data from this paper and previous data from ¹³⁹La(d, t) reaction.

doi: 10.1103/PhysRevC.89.034310
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2014RE15      Phys.Rev. C 90, 067301 (2014)

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

B(E2;2⁺₁ → 0⁺₁) value in ⁹⁰Kr

NUCLEAR REACTIONS ²³⁵U(n, F), E=cold; measured prompt-fission Eγ, γγγ-coin, half-life of first 2+ state in ⁹⁰Kr by fast timing technique using segmented array of Ge and Ce-doped LaBr3 detectors (EXILL and FATIMA) at ILL, Grenoble facility. ⁹⁰Kr; deduced level, B(E2) of first 2+ state. Systematics of B(E2) values of first 2+ states in ^{86,88,90,92,94,96}Kr. Comparison with IBM-2 calculations.

doi: 10.1103/PhysRevC.90.067301
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2013AS01      Phys.Rev. C 87, 014309 (2013)

A.Astier, M.-G.Porquet

First proton-pair breaking in semi-magic nuclei beyond ¹³²Sn and ²⁰⁸Pb: Configuration of the long-lived isomer of ²¹⁷Pa

NUCLEAR STRUCTURE ²¹⁷Pa; analyzed level, J, π, g factor systematics of N=126 isotones with Z=84-92, N=82 isotones with Z=52-58, and 17/2+ ¹³⁹La isomeric state; deduced configuration of 23/2- isomeric state in ²¹⁷Pa.

doi: 10.1103/PhysRevC.87.014309
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2013AS05      Phys.Rev. C 87, 054316 (2013)

A.Astier, M.-G.Porquet, G.Duchene, F.Azaiez, D.Curien, I.Deloncle, O.Dorvaux, B.J.P.Gall, M.Houry, R.Lucas, P.C.Srivastava, N.Redon, M.Rousseau, O.Stezowski, Ch.Theisen

High-spin structures of ¹³⁶₅₅Cs₈₁

NUCLEAR REACTIONS ²³⁸U(¹²C, F), E=90 MeV; ²⁰⁸Pb(¹⁸O, X), E=85 MeV; measured Eγ, Iγ, (fragment)γ-, γγ-coin, conversion coefficients using Euroball array at Legnaro XTU Tandem accelerator and IReS, Strasbourg facilities. ¹³⁶Cs; deduced high-spin levels, J, π, conversion coefficients, multipolarity, configurations. Comparison with shell-model calculations using SN100PN interaction.

doi: 10.1103/PhysRevC.87.054316
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2013AS07      Phys.Rev. C 88, 024321 (2013)

A.Astier, M.-G.Porquet, Ts.Venkova, G.Duchene, F.Azaiez, D.Curien, I.Deloncle, O.Dorvaux, B.J.P.Gall, N.Redon, M.Rousseau, O.Stezowski

High-spin structures of ₃₆⁸⁸Kr₅₂ and ₃₇⁸⁹Rb₅₂ Evolution from collective to single-particle behavior

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁶O, X), E=85 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ) using Euroball array at IReS, Strasbourg facility. ⁸⁸Kr, ⁸⁹Rb; deduced high-spin levels, J, π, bands, multipolarity, energy vs angular momentum plots, configurations, seniority classification, collectivity of N=52 isotones. Comparison with shell-model calculations.

NUCLEAR STRUCTURE ⁸⁷Br, ⁸⁸Kr, ⁸⁹Rb; calculated levels, J, π, configurations, energy vs angular momentum plots, decomposition of total angular momenta. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.024321
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2013KU07      Phys.Rev. C 87, 044323 (2013)

I.Kuti, J.Timar, D.Sohler, E.S.Paul, K.Starosta, A.Astier, D.Bazzacco, P.Bednarczyk, A.J.Boston, N.Buforn, H.J.Chantler, C.J.Chiara, R.M.Clark, M.Cromaz, M.Descovich, Zs.Dombradi, P.Fallon, D.B.Fossan, C.Fox, A.Gizon, J.Gizon, A.A.Hecht, N.Kintz, T.Koike, I.Y.Lee, S.Lunardi, A.O.Macchiavelli, P.J.Nolan, B.M.Nyako, C.M.Petrache, J.A.Sampson, H.C.Scraggs, T.G.Tornyi, R.Wadsworth, A.Walker, L.Zolnai

Medium- and high-spin band structure of the chiral candidate ¹³²La

NUCLEAR REACTIONS ¹⁰⁰Mo(³⁶S, 3np), E=160 MeV; ¹¹⁶Cd(²³Na, 3nα), E=115 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γ(θ, lin pol), conversion coefficients using the EUROBALL array at IReS, Strasbourg, and Gammasphere array. ¹³²La; deduced high-spin levels, J, π, multipolarity, bands, B(M1)/B(E2), alignments, Routhians, configurations, chiral partners. Comparison with band structure in ¹³⁴Pr.

doi: 10.1103/PhysRevC.87.044323
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2013LE27      Phys.Rev. C 88, 044309 (2013)

R.Leguillon, H.Nishibata, Y.Ito, C.M.Petrache, A.Odahara, T.Shimoda, N.Hamatani, K.Tajiri, J.Takatsu, R.Yokoyama, E.Ideguchi, H.Watanabe, Y.Wakabayashi, K.Yoshinaga, T.Suzuki, S.Nishimura, D.Beaumel, G.Lehaut, D.Guinet, P.Desesquelles, D.Curien, A.Astier, T.Konstantinopoulos, T.Zerrouki

Spectroscopy of ¹³⁵La

NUCLEAR REACTIONS ¹²⁴Sn(¹⁷N, 6n), [¹⁷N secondary beam from ⁹Be(¹⁸O, ¹⁷N)¹⁰B, E=9.2 MeV/nucleon primary reaction], E not given; measured Eγ, Iγ, γγ-coin, isomer half-lives by γγ(t) using array of 12 HPGe detectors at RCNP, Osaka facility. ¹³⁵La; deduced levels, J, π, bands, configuration. Comparison with previous experimental results. Systematics of low-lying states in ^{127,129,131,133,135,137,139}La. Comparison of low-lying states in ¹³⁵La with N=78 isotones ¹³⁴Ba and ¹³⁶Ce.

doi: 10.1103/PhysRevC.88.044309
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2012AS05      Phys.Rev. C 85, 054316 (2012)

A.Astier, M.-G.Porquet, Ch.Theisen, D.Verney, I.Deloncle, M.Houry, R.Lucas, F.Azaiez, G.Barreau, D.Curien, O.Dorvaux, G.Duchene, B.J.P.Gall, N.Redon, M.Rousseau, O.Stezowski

High-spin states with seniority v=4, 5, and 6 in ^119-126Sn

NUCLEAR REACTIONS ²³⁸U(¹²C, F), E=90 MeV; ²⁰⁸Pb(¹⁸O, X), E=85 MeV; measured Eγ, Iγ, γγ-coin, γγ-coin with γ rays from complementary fragments of ^96,98,100Zr, ^{114,116,118,120,122}Cd, γγ(θ), isomer half-lives by γγ(t) using Euroball array, fission fragment spectra using SAPhIR detector. ^{119,120,121,122,123,124,125,126}Sn; deduced high-spin levels, J, π, isomers, configurations, B(E2), high-seniority states. ¹¹⁸Cd, ¹¹⁸Sn; measured Eγ. ^{114,116,118,120,122}Cd; measured relative yields. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.85.054316
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2012AS06      Phys.Rev. C 85, 064316 (2012)

A.Astier, M.-G.Porquet, Ts.Venkova, D.Verney, Ch.Theisen, G.Duchene, F.Azaiez, G.Barreau, D.Curien, I.Deloncle, O.Dorvaux, B.J.P.Gall, M.Houry, R.Lucas, N.Redon, M.Rousseau, O.Stezowski

High-spin structures of five N=82 isotopes ₅₄¹³⁶Xe, ₅₅¹³⁷Cs, ₅₆¹³⁸Ba, ₅₇¹³⁹La, and ₅₈¹⁴⁰Ce

NUCLEAR REACTIONS ²³⁸U(¹²C, F), E=90 MeV; ²⁰⁸Pb(¹⁸O, X), E=85 MeV; measured Eγ, Iγ, γγ(θ), γγ-coin, γγ-coin with complementary fragments of ^{101,102,103,104}Mo and ^103,104,105Tc using the Euroball array. ¹³⁶Xe, ¹³⁷Cs, ¹³⁸Ba, ¹³⁹La, ¹⁴⁰Ce; deduced high-spin levels, J, π, band-like structures, configurations, multipolarity. ¹³⁹La; measured isomer half-life by (fragment)(fragment)γ(t) using SAPhIR system; deduced B(E2). Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.85.064316
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2012AS07      Prog.Theor.Phys.(Kyoto), Suppl. 196, 263 (2012)

A.Astier, M.G.Porquet

High-Spin States of ^{212, 213, 214}Po: Probing the Valence Space beyond ²⁰⁸Pb

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, X)²¹²Po/²¹³Po/²¹⁴Po, E=85 MeV; measured reaction products, Eγ, Iγ, γ-γ-γ coin.; deduced level scheme, J, π, high-spin states. Comparison with available data.

doi: 10.1143/PTPS.196.263
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2012DE10      Phys.Rev. C 85, 064306 (2012)

D.S.Delion, R.J.Liotta, P.Schuck, A.Astier, M.-G.Porquet

Shell model plus cluster description of negative parity states in ²¹²Po

NUCLEAR STRUCTURE ²¹²Po; calculated negative-parity levels, J, π, B(E1), B(E2), octupole TDA amplitudes, α-decay widths. ^208,210Pb, ²¹⁰Po; calculated interaction energies, B(E2). Shell-model with α cluster approach. Comparison with experimental data.

doi: 10.1103/PhysRevC.85.064306
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2011AS02      Phys.Rev. C 83, 014311 (2011)

A.Astier, M.Porquet

First observation of high-spin states in ²¹⁴Po: Probing the valence space beyond ²⁰⁸Pb

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, X), E=85 MeV; measured Eγ, Iγ, (x ray)γ-, γγγ-coin, γ(θ), ADO ratios, level half-life by γγ(t) using Euroball IV array. ²¹⁴Po; deduced levels, J, π, yrast structure, internal conversion electron coefficients, multipolarities, configurations. Comparison with empirical shell model predictions and with systematics (levels and B(E2)) of ²¹⁰Pb, ^{210,212,214,216,218}Po.

doi: 10.1103/PhysRevC.83.014311
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2011AS05      Phys.Rev. C 83, 034302 (2011), Erratum Phys.Rev. C 86, 049905 (2012)

A.Astier, M.-G.Porquet

High-spin states in the five-valence-particle nucleus ²¹³Po

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, X), E=85 MeV; measured Eγ, Iγ, γ(θ), γγ-coin, cross section using Euroball IV array. ²¹³Po; deduced levels, J, π, conversion coefficients, multipolarity, configurations, yrast states. Comparison with empirical shell model predictions, and with level systematics of ²¹¹Pb and ²¹¹Po.

doi: 10.1103/PhysRevC.83.034302
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2011AS06      Int.J.Mod.Phys. E20, 785 (2011)

A.Astier, P.Petkov, M.-G.Porquet, D.S.Delion, P.Schuck

Pure α-²⁰⁸Pb states in ²¹²Po revealed by their enhanced E1 decays, A novel α clustering

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, ¹⁴C)²¹²Po, E=85 MeV; measured reaction products, Eγ, Iγ, γ-γ-γ-coin.; deduced energies, states, J, π, yrast states, B(E1), α-²⁰⁸Pb states.

doi: 10.1142/S0218301311018678
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2011AS09      J.Phys.:Conf.Ser. 312, 092014 (2011)

A.Astier, P.Petkov, M.-G.Porquet, D.S.Delion, P.Schuck

A novel manifestation of α clustering in ²¹²Po: Pure α-²⁰⁸Pb states revealed by their enhanced E1 decays

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, ¹⁴C), E=85 MeV; measured Eγ, Iγ(θ), γγ-coin using Eurobal array of Ge crystals. ²¹²Po deduced γ yrast transitions angular distribution, T_1/2 using Doppler shift, B(E1), α-core.

doi: 10.1088/1742-6596/312/9/092014
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2011PO13      Phys.Rev. C 84, 054305 (2011)

M.-G.Porquet, A.Astier, D.Verney, Ts.Venkova, I.Deloncle, F.Azaiez, A.Buta, D.Curien, O.Dorvaux, G.Duchene, B.J.P.Gall, F.Khalfallah, I.Piqueras, M.Rousseau, M.Meyer, N.Redon, O.Stezowski, A.Bogachev

Medium-spin states in neutron-rich ⁸³As and ⁸¹As

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, X), E=85 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ). ^81,83As; deduced levels, J, π, multipolarity, configurations; calculated spectra and wave function decompositions based on quasiparticle + rotor model.

doi: 10.1103/PhysRevC.84.054305
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2011WI12      J.Phys.:Conf.Ser. 312, 092065 (2011)

A.N.Wilson, A.Korichi, S.Siem, A.Astier, D.Bazzacco, P.Bednarczyk, M.H.Bergstrom, S.Chmel, D.M.Cullen, P.M.Davidson, A.Gorgen, F.Hannachi, H.Hubel, N.Kintz, T.Lauritsen, A.Lopez-Martens, S.Lunardi, S.Naguleswaran, B.M.Nyako, M.Rejmund, G .Schonwasser, C.Schuck, J.F.Sharpey-Schafer, J.Timar, R.Wadsworth, J.Libert

Two-Particle Separation Energies in the Superdeformed Well

NUCLEAR STRUCTURE ^190,192,194Hg, ^192,194,196Pb; calculated superdeformed quasi-vacuum states using HFB with Skyrme and Gogny forces and GCM. ^{188,190,192,194,196}Hg, ^{190,192,194,196,198}Pb; calculated mass excess, 2n and 2p separation energies. Compared with data.

doi: 10.1088/1742-6596/312/9/092065
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2010AS01      Phys.Rev.Lett. 104, 042701 (2010)

A.Astier, P.Petkov, M.-G.Porquet, D.S.Delion, P.Schuck

Novel Manifestation of α-Clustering Structures: New "α+ ²⁰⁸Pb" States in ²¹²Po Revealed by Their Enhanced E1 Decays

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, ¹⁴C), E=85 MeV; measured Eγ, Iγ; deduced ²¹²Po level scheme, yrast state, lifetimes, B(E1). Doppler-shift attenuation method.

doi: 10.1103/PhysRevLett.104.042701
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2010AS03      Eur.Phys.J. A 46, 165 (2010)

A.Astier, P.Petkov, M.-G.Porquet, D.S.Delion, P.Schuck

Coexistence of "a + ²⁰⁸Pb" cluster structures and single-particle excitations in ²¹²84Po128

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, ¹⁴C), E=85 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin. ²¹²Po; deduced level scheme, transition energies, γ-ray intensities, J, π, angular-distribution coefficients, internal conversion coefficients, yrast states, lifetimes, B(E1), B(E2), B(E3). EUROBALL project, DSAM method, comparison with low-lying cluster structure models.

RADIOACTIVITY ²¹²Po(α); measured decay products, Eγ, Iγ, alpha spectrum; deduced branching ratios, partial T_1/2 for yrast states.

doi: 10.1140/epja/i2010-11053-6
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2010DO13      Phys.Rev. C 82, 067306 (2010)

Q.T.Doan, A.Vancraeyenest, O.Stezowski, D.Guinet, D.Curien, J.Dudek, Ph.Lautesse, G.Lehaut, N.Redon, Ch.Schmitt, G.Duchene, B.Gall, H.Molique, J.Piot, P.T.Greenlees, U.Jakobsson, R.Julin, S.Juutinen, P.Jones, S.Ketelhut, M.Nyman, P.Peura, P.Rahkila, A.Gozdz, K.Mazurek, N.Schunck, K.Zuber, P.Bednarczyk, A.Maj, A.Astier, I.Deloncle, D.Verney, G.de Angelis, J.Gerl

Spectroscopic information about a hypothetical tetrahedral configuration in ¹⁵⁶Gd

NUCLEAR REACTIONS ¹⁵⁴Sm(⁴He, 2n), E=27 MeV; measured Eγ, Iγ, γγ-coin, γ(θ) using JUROGAM array. ¹⁵⁶Gd; deduced levels, J, π, bands, multipolarity, mixing ratio. Search for evidence of hypothetical tetrahedral configuration in ¹⁵⁶Gd.

doi: 10.1103/PhysRevC.82.067306
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2010WI02      Phys.Rev.Lett. 104, 162501 (2010)

A.N.Wilson, A.Korichi, S.Siem, A.Astier, D.Bazzacco, P.Bednarczyk, M.H.Bergstrom, S.Chmel, D.M.Cullen, P.M.Davidson, A.Gorgen, F.Hannachi, H.Hubel, N.Kintz, T.Lauritsen, A.Lopez-Martens, S.Lunardi, S.Naguleswaran, B.M.Nyako, M.Rejmund, G.Schonwasser, C.Schuck, J.F.Sharpey-Schafer, J.Timar, R.Wadsworth, J.Libert

Two-Particle Separation Energy Trends in the Superdeformed Well

NUCLEAR REACTIONS ¹⁶⁰Gd(³⁴S, 4n), E=156 MeV; measured Eγ, Iγ, γγ-coin.; ¹⁹⁰Hg deduced energy and J of superdeformed and normal states, two-proton separation energies, critical tests of nuclear models.

doi: 10.1103/PhysRevLett.104.162501
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2009DO08      Acta Phys.Pol. B40, 725 (2009)

Q.T.Doan, D.Curien, O.Stezowski, J.Dudek, K.Mazurek, A.Gozdz, J.Piot, G.Duchene, B.Gall, H.Molique, M.Richet, P.Medina, D.Guinet, N.Redon, Ch.Schmitt, P.Jones, P.Peura, S.Ketelhut, M.Nyman, U.Jakobsson, P.T.Greenlees, R.Julin, S.Juutinen, P.Rahkila, A.Maj, K.Zuber, P.Bednarczyk, N.Schunck, J.Dobaczewski, A.Astier, I.Deloncle, D.Verney, G.de Angelis, J.Gerl

Search for Fingerprints of Tetrahedral Symmetry in ¹⁵⁶Gd

NUCLEAR REACTIONS ¹⁵⁴Sm(α, 2n), E=27 MeV; measured Eγ, Iγ, γγ-coin; deduced B(E2)/B(E1).

2009PO04      Eur.Phys.J. A 39, 295 (2009)

M.-G.Porquet, A.Astier, Ts.Venkova, A.Prevost, I.Deloncle, F.Azaiez, A.Buta, D.Curien, O.Dorvaux, G.Duchene, B.J.P.Gall, F.Khalfallah, I.Piqueras, M.Rousseau, M.Meyer, N.Redon, O.Stezowski, R.Lucas, A.Bogachev

High-spin excitations of ^{81, 82, 83, 85}Se; Competing single-particle and collective structures around N = 50

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, X)⁸¹Se/⁸²Se/⁸³Se/⁸⁵Se, E=85 MeV; measured Eγ, Iγ, γγ-coin. ^81,82,83,85Se; deduced high-spin levels, J, π, configurations. Comparison with systematics. Euroball IV array.

doi: 10.1140/epja/i2008-10723-2
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2009PO10      Eur.Phys.J. A 40, 131 (2009)

M.-G.Porquet, A.Astier, Ts.Venkova, I.Deloncle, F.Azaiez, A.Buta, D.Curien, O.Dorvaux, G.Duchene, B.J.P.Gall, F.Khalfallah, I.Piqueras, M.Rousseau, M.Meyer, N.Redon, O.Stezowski, R.Lucas, A.Bogachev

High-spin excitations of the odd-odd ⁸⁸₃₇Rb₅₁ and ⁸⁶₃₅Br₅₁ nuclei: πp_3/2νd_5/2 and πf_5/2νd_5/2 residual interactions

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, X)⁸⁶Br/⁸⁸Rb, E=85 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), γ(t) using the Euroball IV array; deduced high-spin levels, J, π, multipolarities, configurations. Comparison with systematics.

doi: 10.1140/epja/i2008-10740-1
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2009RI14      Eur.Phys.J. A 42, 307 (2009)

L.Risegari, A.Astier, G.Audi, S.Cabaret, C.Gaulard, G.Georgiev, N.J.Stone, J.R.Stone

POLAREX; Study of polarized exotic nuclei at millikelvin temperatures

doi: 10.1140/epja/i2009-10779-4
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2007BO40      Eur.Phys.J. A 34, 23 (2007)

A.Bogachev, L.Krupa, O.Dorvaux, E.Kozulin, M.Itkis, M.-G.Porquet, A.Astier, D.Curien, I.Deloncle, G.Duchene, B.J.P.Gall, F.Hanappe, F.Khalfallah, M.Rousseau, L.Stuttge, N.Redon, O.Stezowski

Fission fragment properties obtained in the ψ-ψ-ψ coincidence method in the reaction ²⁰⁸Pb(¹⁸O, f)

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, F), E=85 MeV; measured Eγ, Iγ, γγ-coin using EUROBALL IV; deduced fission fragment yields, neutron multiplicities and average angular momenta.

doi: 10.1140/epja/i2007-10485-3
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2007VE14      Eur.Phys.J. A 34, 349 (2007)

Ts.Venkova, M.-G.Porquet, I.Deloncle, P.Petkov, A.Astier, A.Prevost, F.Azaiez, A.Bogachev, A.Buta, D.Curien, O.Dorvaux, G.Duchene, J.Durell, B.J.P.Gall, M.Houry, F.Khalfallah, R.Lucas, M.Meyer, I.Piqueras, N.Redon, A.Roach, M.Rousseau, O.Stezowski, Ch.Theisen

New high-spin states of ¹⁴²₅₈Ce and ¹⁴⁰₅₆Ba from fusion-fission reactions: Proton excitations in the N = 84 isotones

NUCLEAR REACTIONS ²³⁸U(¹²C, X)¹⁴⁰Ba/¹⁴²Ce, E=90 MeV; ²⁰⁸Pb(¹⁸O, X)¹⁴⁰Ba/¹⁴²Ce, E=85 MeV; measured Eγ, Iγ, γγ-coin. ¹⁴⁰Ba, ¹⁴²Ce deduced high-spin levels, J, π, configurations. Euroball III and IV arrays.

doi: 10.1140/epja/i2007-10526-y
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2006AS07      Eur.Phys.J. A 30, 541 (2006)

A.Astier, M.-G.Porquet, Ts.Venkova, I.Deloncle, F.Azaiez, A.Buta, D.Curien, O.Dorvaux, G.Duchene, B.J.P.Gall, F.Khalfallah, I.Piqueras, M.Rousseau, M.Meyer, N.Redon, O.Stezowski, R.Lucas, A.Bogachev

High-spin excitations of ⁸⁴₃₅Br₄₉ and ⁸⁵₃₅Br₅₀: Mapping the proton sub-shells towards ⁷⁸Ni

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, X)⁸⁴Br/⁸⁵Br, E=85 MeV; measured Eγ, Iγ, γγ-coin. ^84,85Br deduced high-spin levels, J, π, configurations. Euroball IV array.

doi: 10.1140/epja/i2006-10151-4
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2006PA37      Phys.Scr. T125, 115 (2006)

E.S.Paul, P.T.W.Choy, C.Andreoiu, A.J.Boston, A.O.Evans, C.Fox, S.Gros, P.J.Nolan, G.Rainovski, J.A.Sampson, H.C.Scraggs, A.Walker, D.E.Appelbe, D.T.Joss, J.Simpson, J.Gizon, A.Astier, N.Buforn, A.Prevost, N.Redon, O.Stezowski, B.M.Nyako, D.Sohler, J.Timar, L.Zolnai, D.Bazzacco, S.Lunardi, C.M.Petrache, P.Bednarczyk, D.Curien, N.Kintz, I.Ragnarsson

The highest spin discrete levels in ^{131, 132}Ce

NUCLEAR REACTIONS ¹⁰⁰Mo(³⁶S, 4n), (³⁶S, 5n), E=160, 165 MeV; measured Eγ, Iγ, γγ-coin. ^131,132Ce deduced superdeformed band transitions. Euroball IV array.

doi: 10.1088/0031-8949/2006/T125/026
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2006PE32      Phys.Scr. T125, 214 (2006)

M.Petri, E.S.Paul, P.J.Nolan, A.J.Boston, R.J.Cooper, M.R.Dimmock, S.Gros, B.M.McGuirk, H.C.Scraggs, G.Turk, B.Rosse, M.Meyer, N.Redon, Ch.Schmitt, O.Stezowski, D.Guinet, Ph.Lautesse, G.De France, S.Bhattacharyya, G.Mukherjee, F.Rejmund, M.Rejmund, H.Savajols, J.N.Scheurer, A.Astier, I.Deloncle, A.Prevost, B.M.Nyako, J.Gal, J.Molnar, J.Timar, L.Zolnai, K.Juhasz, V.F.E.Pucknell, R.Wadsworth, P.Joshi, G.La Rana, R.Moro, M.Trotta, E.Vardaci, G.Hackman, G.Ball

Probing the maximally deformed light rare-earth region around the drip-line nucleus ¹³⁰Sm

doi: 10.1088/0031-8949/2006/T125/057
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2006PO09      Eur.Phys.J. A 28, 153 (2006)

M.-G.Porquet, Ts.Venkova, A.Astier, I.Deloncle, A.Prevost, F.Azaiez, A.Buta, D.Curien, O.Dorvaux, G.Duchene, B.J.P.Gall, F.Khalfallah, I.Piqueras, M.Rousseau, M.Meyer, N.Redon, O.Stezowski, R.Lucas, A.Bogachev

Beyond the N = 50 shell closure: High-spin excitations of ⁸⁷Kr and ground-state spin of ⁸⁷Br

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, X), E=85 MeV; measured Eγ, Iγ, γγ-coin. ⁸⁷Kr deduced high-spin levels, J, π, configurations. ⁸⁷Br deduced ground state J, π. Euroball IV array.

doi: 10.1140/epja/i2006-10050-8
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2005PA30      Phys.Rev. C 71, 054309 (2005)

E.S.Paul, P.T.W.Choy, C.Andreoiu, A.J.Boston, A.O.Evans, C.Fox, S.Gros, P.J.Nolan, G.Rainovski, J.A.Sampson, H.C.Scraggs, A.Walker, D.E.Appelbe, D.T.Joss, J.Simpson, J.Gizon, A.Astier, N.Buforn, A.Prevost, N.Redon, O.Stezowski, B.M.Nyako, D.Sohler, J.Timar, L.Zolnai, D.Bazzacco, S.Lunardi, C.M.Petrache, P.Bednarczyk, D.Curien, N.Kintz, I.Ragnarsson

Highest spin discrete levels in ^{131, 132}Ce: Spin generation near the mesoscopic limit

NUCLEAR REACTIONS ¹⁰⁰Mo(³⁶S, 4n), (³⁶S, 5n), E=160, 165 MeV; measured Eγ, Iγ, γγ-coin. ^131,132Ce deduced high-spin levels, J, π, superdeformed bands, configurations, band termination features. Euroball IV array, cranked mean-field calculations.

doi: 10.1103/PhysRevC.71.054309
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2005PA48      Phys.Rev. C 72, 024304 (2005)

D.Pantelica, I.Gh.Stefan, N.Nica, M.-G.Porquet, G.Duchene, A.Astier, S.Courtin, I.Deloncle, F.Hoellinger, A.Bauchet, N.Buforn, L.Donadille, O.Dorvaux, J.Duprat, B.J.P.Gall, C.Gautherin, T.Kutsarova, S.Lalkovski, R.Lucas, M.Meyer, A.Minkova, A.Prevost, N.Redon, N.Schulz, H.Sergolle, O.Stezowski, Ts.Venkova, A.Wilson

High-spin states in ^92-96Zr nuclei

NUCLEAR REACTIONS ¹⁷⁶Yb(²⁸Si, X)⁹²Zr/⁹³Zr/⁹⁴Zr/⁹⁵Zr/⁹⁶Zr, E=145 MeV; ¹⁷⁶Yb(³¹P, X)⁹²Zr/⁹³Zr/⁹⁴Zr/⁹⁵Zr/⁹⁶Zr, E=152 MeV; measured Eγ, Iγ, γγ-coin. ^{92,93,94,95,96}Zr deduced high-spin levels, J, π, configurations. Eurogam II and Euroball IV arrays, comparisons with shell-model predictions.

doi: 10.1103/PhysRevC.72.024304
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2005PO03      Eur.Phys.J. A 24, 39 (2005)

M.-G.Porquet, Ts.Venkova, R.Lucas, A.Astier, A.Bauchet, I.Deloncle, A.Prevost, F.Azaiez, G.Barreau, A.Bogachev, N.Buforn, A.Buta, D.Curien, T.P.Doan, L.Donadille, O.Dorvaux, G.Duchene, J.Durell, Th.Ethvignot, B.P.J.Gall, D.Grimwood, M.Houry, F.Khalfallah, W.Korten, S.Lalkovski, Y.Le Coz, M.Meyer, A.Minkova, I.Piqueras, N.Redon, A.Roach, M.Rousseau, N.Schulz, A.G.Smith, O.Stezowski, Ch.Theisen, B.J.Varley

High-spin structures of ^{121, 123, 125, 127}₅₁Sb nuclei: Single proton and core-coupled states

NUCLEAR REACTIONS ²³⁸U(¹²C, X), E=90 MeV; ²⁰⁸Pb(¹⁸O, X), E=85 MeV; ¹⁷⁶Yb(³¹P, X), E=152 MeV; measured prompt and delayed Eγ, Iγ, γγ-coin. ^{121,123,125,127}Sb deduced high-spin levels, J, π, configurations. ^123,125,127Sb deduced isomeric states energies, T_1/2. Euroball III and IV arrays.

doi: 10.1140/epja/i2004-10119-4
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2005VE09      Eur.Phys.J. A 26, 315 (2005)

Ts.Venkova, M.-G.Porquet, A.Astier, I.Deloncle, P.Petkov, A.Prevost, F.Azaiez, A.Bogachev, A.Buta, D.Curien, O.Dorvaux, G.Duchene, J.Durell, B.J.P.Gall, M.Houry, F.Khalfallah, R.Lucas, M.Meyer, I.Piqueras, N.Redon, A.Roach, M.Rousseau, O.Stezowski, Ch.Theisen

New high-spin states of ¹⁴⁷Nd and ¹⁴⁵Ce: Octupole correlation in the N = 87 isotones

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, X)¹⁴⁵Ce, E=85 MeV; ²³⁸U(¹²C, X)¹⁴⁷Nd, E=90 MeV; measured Eγ, Iγ, γγ-coin. ¹⁴⁷Nd, ¹⁴⁵Ce deduced high-spin levels, J, π, configurations. Euroball III and IV arrays.

doi: 10.1140/epja/i2005-10181-4
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2005WI21      Phys.Rev.Lett. 95, 182501 (2005)

A.N.Wilson, A.K.Singh, H.Hubel, P.M.Davidson, A.Gorgen, D.Rossbach, A.Korichi, A.Astier, F.Azaiez, D.Bazzacco, C.Bourgeois, N.Buforn, A.P.Byrne, G.D.Dracoulis, F.Hannachi, K.Hauschild, W.Korten, T.Kroll, G.J.Lane, A.Lopez-Martens, N.Redon, P.Reiter, C.Rossi-Alvarez, G.Schonwasser, O.Stezowski, P.G.Thirolf

Excitation Energies of Superdeformed States in ¹⁹⁶Pb: Towards a Systematic Study of the Second Well in Pb Isotopes

NUCLEAR REACTIONS ¹⁷⁰Er(³⁰Si, 4n), E=144 MeV; measured prompt and delayed Eγ, Iγ, γγ-coin. ¹⁹⁶Pb deduced superdeformed band excitation energy, J, π. Euroball IV array, time-correlated spectroscopy.

NUCLEAR STRUCTURE ^192,194,196Pb; analyzed superdeformed bands level energies, binding energies. Several models compared with data.

doi: 10.1103/PhysRevLett.95.182501
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2004PO10      Eur.Phys.J. A 20, 245 (2004)

M.-G.Porquet, A.Astier, I.Deloncle, O.Dorvaux, B.J.P.Gall, R.Lucas, M.Meyer, A.Prevost, N.Redon, N.Schulz, O.Stezowski

Evolution of the πg_9/2νh²_11/2 multiplet in the neutron-rich ₄₉In isotopes: Evidence for the gradual filling of the neutron sub-shell

NUCLEAR STRUCTURE ^{113,115,117,119,121,123,125,127}In; calculated levels, J, π, configurations. ^123,125,127In; deduced isomeric states features. Shell model.

doi: 10.1140/epja/i2003-10161-8
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2004PR10      Eur.Phys.J. A 22, 391 (2004)

A.Prevost, M.G.Porquet, A.Astier, I.Deloncle, F.Azaiez, A.Buta, D.Curien, O.Dorvaux, G.Duchene, B.J.P.Gall, F.Khalfallah, I.Piqueras, M.Rousseau, M.Meyer, N.Redon, O.Stezowski, Ts.Venkova, R.Lucas, A.Bogachev

Medium-spin excitations of the neutron-rich ⁸⁴Se isotope: Possible decrease in energy of the N = 50 neutron-core excitation

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, F)⁸⁴Se/⁸⁶Kr/¹³⁶Ba/¹³⁷Ba/¹³⁸Ba/¹³⁹Ba, E=85 MeV; measured Eγ, Iγ, γγ-coin. ⁸⁴Se, ⁸⁶Kr deduced levels, J, π. Euroball IV array, level systematics in neighboring nuclides discussed.

doi: 10.1140/epja/i2004-10063-3
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2004RE08      Eur.Phys.J. A 20, 31 (2004)

N.Redon, N.Buforn, R.Duffait, P.Lautesse, M.Meyer, A.Prevost, O.Stezowski, A.Astier, A.Bauchet, I.Deloncle, M.G.Porquet, J.Domscheit, A.Goergen, H.Hubel, E.Mergel, S.Neumann, D.Rossbach, N.Nenoff, G.Schoenwasser, A.N.Wilson, R.Lucas, F.A.Beck, P.Bednarczyk, D.Curien, G.Duchene, O.Dorvaux, B.J.P.Gall, N.Kintz, J.P.Vivien, D.M.Cullen

Superdeformed nuclear matter in nuclei with Z ≥ 82: Magnetic properties and neutron shell gap

NUCLEAR REACTIONS ¹⁸⁶W(¹⁸O, 7n), (¹⁸O, 6n), E=117 MeV; measured Eγ, Iγ, γγ-coin. ^197,198Pb deduced superdeformed bands, B(M1)/B(E2), configurations. Euroball IV array.

doi: 10.1140/epja/i2002-10314-3
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2004RO09      Int.J.Mod.Phys. E13, 47 (2004)

B.Rosse, O.Stezowski, M.Meyer, A.Prevost, N.Redon, J.Styczen, M.Brekiesz, J.Grebosz, A.Maj, W.Meczynski, T.Pawlat, M.Zieblinski, K.Zuber, P.Bednarczyk, D.Curien, O.Dorvaux, B.Gall, P.Papka, J.Robin, J.P.Vivien, A.Astier, I.Deloncle, M.-G.Porquet, K.Keyes, A.Papenberg, K.M.Spohr, H.Hubel, A.Bracco, F.Camera, J.Bastin, M.Gorska

Structure of polonium isotopes at high spin with RFD + Euroball IV

NUCLEAR REACTIONS ¹⁷⁶Yb(³⁰Si, 5n), (³⁰Si, 6n), E=160 MeV; measured Eγ, Iγ, γγ-, (recoil)γ-coin. Euroball IV array, recoil filter detector.

doi: 10.1142/S0218301304001710
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2003LA23      Eur.Phys.J. A 18, 589 (2003)

S.Lalkovski, A.Minkova, M.-G.Porquet, A.Bauchet, I.Deloncle, A.Astier, N.Buforn, L.Donadille, O.Dorvaux, B.P.J.Gall, R.Lucas, M.Meyer, A.Prevost, N.Redon, N.Schulz, O.Stezowski

Two-quasiparticle and collective excitations in transitional ^{108, 110}Pd nuclei

NUCLEAR REACTIONS ¹⁷⁶Yb(³¹P, F)¹⁰⁸Pd/¹¹⁰Pd, E=152 MeV; measured Eγ, Iγ, γγ-coin. ^108,110Pd deduced high-spin levels, J, π, configurations. Euroball4 array.

doi: 10.1140/epja/i2003-10098-x
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2003PO11      Eur.Phys.J. A 18, 25 (2003)

M.-G.Porquet, Ts.Venkova, A.Astier, A.Bauchet, I.Deloncle, N.Buforn, L.Donadille, O.Dorvaux, B.J.P.Gall, S.Lalkovski, R.Lucas, M.Meyer, A.Minkova, A.Prevost, N.Redon, N.Schulz, O.Stezowski

Evolution of the πg_9/2 (X) νh_11/2 configuration in the neutron-rich ^{110, 112}₄₅Rh and ^{114, 116}₄₇Ag isotopes

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, X)¹¹⁰Rh/¹¹²Rh/¹¹⁴Ag/¹¹⁶Ag, E=85 MeV; measured Eγ, Iγ, γγ-coin. ^110,112Rh, ^114,116Ag deduced high-spin levels, J, π, configurations. Euroball IV array.

doi: 10.1140/epja/i2003-10062-x
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2003TI02      Eur.Phys.J. A 16, 1 (2003)

J.Timar, D.Sohler, B.M.Nyako, L.Zolnai, Zs.Dombradi, E.S.Paul, A.J.Boston, C.Fox, P.J.Nolan, J.A.Sampson, H.C.Scraggs, A.Walker, J.Gizon, A.Gizon, D.Bazzacco, S.Lunardi, C.M.Petrache, A.Astier, N.Buforn, P.Bednarczyk, N.Kintz

Experimental evidence for signature inversion in ¹³²La from a revisited level scheme

NUCLEAR REACTIONS ¹⁰⁰Mo(³⁶S, 3np), E=160 MeV; measured Eγ, Iγ, γγ-coin. ¹³²La deduced levels, J, π, configurations. Euroball IV array, comparison with earlier results.

doi: 10.1140/epja/i2002-10106-9
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2002LU15      Eur.Phys.J. A 15, 315 (2002)

R.Lucas, M.-G.Porquet, Ts.Venkova, I.Deloncle, M.Houry, Ch.Theisen, A.Astier, A.Bauchet, S.Lalkovski, G.Barreau, N.Buforn, T.P.Doan, L.Donadille, O.Dorvaux, J.Durell, Th.Ethvignot, B.P.J.Gall, D.Grimwood, W.Korten, Y.Le Coz, M.Meyer, A.Minkova, A.Prevost, N.Redon, A.Roach, N.Schulz, A.G.Smith, O.Stezowski, B.J.Varley

High-Spin study of odd-A ₄₉In isotopes beyond the neutron mid-shell

NUCLEAR REACTIONS ²³⁸U(¹²C, X)¹¹⁷In/¹¹⁹In/¹²¹In, E=90 MeV; ²⁰⁸Pb(¹⁸O, X)¹¹⁷In/¹¹⁹In/¹²¹In, E=85 MeV; ¹⁷⁶Yb(³¹P, X)¹¹³In/¹¹⁵In/¹¹⁷In/¹¹⁹In, E=152 MeV; measured Eγ, Iγ, γγ-, (fragment)γ-coin following fusion-fission reaction; deduced relative yields. ^{115,117,119,121}In deduced high-spin levels, J, π, configurations. ^119,121In deduced isomeric states T_1/2. Euroball III and Euroball IV arrays.

doi: 10.1140/epja/i2002-10042-8
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2002ME25      Eur.Phys.J. A 15, 417 (2002)

E.Mergel, C.M.Petrache, G.Lo Bianco, H.Hubel, J.Domscheit, D.Rossbach, G.Schonwasser, N.Nenoff, A.Neusser, A.Gorgen, F.Becker, E.Bouchez, M.Houry, A.Hurstel, Y.Le Coz, R.Lucas, Ch.Theisen, W.Korten, A.Bracco, N.Blasi, F.Camera, S.Leoni, F.Hannachi, A.Lopez-Martens, M.Rejmund, D.Gassmann, P.Reiter, P.G.Thirolf, A.Astier, N.Buforn, M.Meyer, N.Redon, O.Stezowski

Candidates for chiral doublet bands in ¹³⁶Nd

NUCLEAR REACTIONS ¹²⁵Te(¹⁶O, 5n), E=100 MeV; measured Eγ, Iγ, γγ-coin. ¹³⁶Nd deduced high-spin levels, J, π, configurations, dipole transitions. Euroball array.

doi: 10.1140/epja/i2002-10081-1
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2002PO11      Eur.Phys.J. A 15, 463 (2002)

M.-G.Porquet, Ts.Venkova, P.Petkov, A.Bauchet, I.Deloncle, A.Astier, N.Buforn, J.Duprat, B.J.P.Gall, C.Gautherin, E.Gueorguieva, F.Hoellinger, T.Kutsarova, R.Lucas, M.Meyer, A.Minkova, N.Redon, N.Schulz, H.Sergolle, A.Wilson

High-spin structure of the neutron-rich odd-odd ^{106, 108}₄₅Rh and ^{110, 112}₄₇Ag isotopes

NUCLEAR REACTIONS ¹⁷⁶Yb(²⁸Si, X)¹⁰⁴Rh/¹⁰⁶Rh/¹⁰⁸Rh/¹¹⁰Ag/¹¹²Ag, E=145 MeV; measured Eγ, Iγ, γγ-coin following compound nucleus fission. ^104,106,108Rh, ^110,112Ag deduced high-spin levels, J, π, configurations. Eurogam2 array, particle-rotor model analysis.

doi: 10.1140/epja/i2001-10269-9
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2002RO30      Phys.Rev. C66, 024316 (2002)

D.Rossbach, A.Gorgen, H.Hubel, E.Mergel, G.Schonwasser, F.Azaiez, C.Bourgeois, F.Hannachi, A.Korichi, A.Lopez-Martens, A.Astier, N.Buforn, N.Redon, O.Stezowski, D.Bazzacco, T.Kroll, C.Rossi-Alvarez, K.Hauschild, W.Korten, R.Lucas, H.J.Maier, P.Reiter, P.G.Thirolf

Lifetimes in the yrast and an octupole-vibrational superdeformed band in ¹⁹⁶Pb

NUCLEAR REACTIONS ¹⁷⁰Er(³⁰Si, 4n), E=144 MeV; measured Eγ, Iγ, γγ-coin, DSA. ¹⁹⁶Pb deduced superdeformed band transitions T_1/2, B(E2), transition quadrupole moments, configuration. Euroball array.

doi: 10.1103/PhysRevC.66.024316
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2002SI20      Nucl.Phys. A707, 3 (2002)

A.K.Singh, N.Nenoff, D.Rossbach, A.Gorgen, S.Chmel, F.Azaiez, A.Astier, D.Bazzacco, M.Belleguic, S.Bouneau, C.Bourgeois, N.Buforn, B.Cederwall, I.Deloncle, J.Domscheit, F.Hannachi, K.Hauschild, H.Hubel, A.Korichi, W.Korten, T.Kroll, Y.LeCoz, A.Lopez-Martens, R.Lucas, S.Lunardi, H.J.Maier, E.Mergel, M.Meyer, C.M.Petrache, N.Redon, P.Reiter, C.Rossi-Alvarez, G.Schonwasser, O.Stezowski, P.G.Thirolf, A.N.Wilson

Detailed Study of Magnetic Rotation in ¹⁹⁶Pb

NUCLEAR REACTIONS ¹⁸⁶W(¹⁶O, 6n), E=110 MeV; ¹⁷⁰Er(³⁰Si, 4n), E=144 MeV; measured γγ-coin, Eγ, Iγ, DCO ratios, linear polarization. ¹⁹⁶Pb deduced levels, magnetic dipole bands. Shears bands, magnetic rotation, tilted-axis cranking calculations.

doi: 10.1016/S0375-9474(02)00966-1
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2002SI29      Phys.Rev. C 66, 064314 (2002)

A.K.Singh, H.Hubel, D.Rossbach, S.Chmel, A.Gorgen, E.Mergel, G.Schonwasser, F.Azaiez, C.Bourgeois, F.Hannachi, A.Korichi, A.Lopez-Martens, A.Astier, N.Buforn, N.Redon, O.Stezowski, D.Bazzacco, T.Kroll, C.Rossi-Alvarez, K.Hauschild, W.Korten, R.Lucas, H.J.Maier, P.Reiter, P.G.Thirolf, A.N.Wilson

Lifetimes of magnetic-rotational bands in ¹⁹⁶Pb

NUCLEAR REACTIONS ¹⁷⁰Er(³⁰Si, 4n), E=144 MeV; measured Eγ, Iγ, γγ-coin, DSA. ¹⁹⁶Pb deduced rotational bands transitions T_1/2, B(M1). Euroball array. Comparison with model predictions.

doi: 10.1103/PhysRevC.66.064314
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2002SO03      Phys.Rev.Lett. 88, 092501 (2002)

O.Sorlin, S.Leenhardt, C.Donzaud, J.Duprat, F.Azaiez, F.Nowacki, H.Grawe, Zs.Dombradi, F.Amorini, A.Astier, D.Baiborodin, M.Belleguic, C.Borcea, C.Bourgeois, D.M.Cullen, Z.Dlouhy, E.Dragulescu, M.Gorska, S.Grevy, D.Guillemaud-Mueller, G.Hagemann, B.Herskind, J.Kiener, R.Lemmon, M.Lewitowicz, S.M.Lukyanov, P.Mayet, F.de Oliveira Santos, D.Pantalica, Yu.-E.Penionzhkevich, F.Pougheon, A.Poves, N.Redon, M.G.Saint-Laurent, J.A.Scarpaci, G.Sletten, M.Stanoiu, O.Tarasov, Ch.Thelsen

₂₈⁶⁸Ni₄₀: Magicity versus superfluidity

NUCLEAR REACTIONS ²⁰⁸Pb(⁶⁶Ni, ⁶⁶Ni'), (⁶⁸Ni, ⁶⁸Ni'), E ≈ 50 MeV/nucleon; ²⁰⁸Pb(⁷⁰Zn, ⁷⁰Zn'), E=65.9 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. ⁷⁰Zn, ^66,68Ni deduced transitions B(E2). Comparison with shell model calculations.

doi: 10.1103/PhysRevLett.88.092501
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2002VE08      Eur.Phys.J. A 15, 429 (2002)

Ts.Venkova, M.-G.Porquet, A.Astier, A.Bauchet, I.Deloncle, S.Lalkovski, N.Buforn, L.Donadille, O.Dorvaux, B.J.P.Gall, R.Lucas, M.Meyer, A.Minkova, A.Prevost, N.Redon, N.Schulz, O.Stezowski

High-spin structure of the neutron-rich ^{109, 111, 113}₄₅Rh isotopes

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁸O, X)¹⁰⁹Rh/¹¹¹Rh/¹¹³Rh, E=85 MeV; measured Eγ, Iγ, γγ-coin. ^109,111,113Rh deduced high-spin levels, J, π, configurations. Euroball IV array.

doi: 10.1140/epja/i2002-10090-0
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2001BA39      Eur.Phys.J. A 10, 145 (2001)

A.Bauchet, I.Deloncle, M.-G.Porquet, A.Astier, N.Buforn, M.Meyer, S.Perries, N.Redon, B.J.P.Gall, F.Hoellinger, N.Schulz, G.Duchene, S.Courtin, Ts.Venkova, P.A.Butler, N.Amzal, R.D.Herzberg, A.Chewter, R.Cunningham, M.Houry, R.Lucas, W.Urban, A.Nowak, E.Piasecki, J.Duprat, C.Petrache, T.Kroll

First Identification of Rotational Bands in ¹⁰³Tc: Evolution of intrinsic proton states of the ₄₃^97-105Tc Isotopes

NUCLEAR REACTIONS ¹⁷⁶Yb(³⁷Cl, F), E=170 MeV; measured Eγ, Iγ, γγ-coin. ¹⁰³Tc deduced high-spin levels, possible J, π. Level systematics in neighboring nuclides discussed. Euroball III array.

NUCLEAR STRUCTURE ^{97,98,99,100,101,102,103,104,105}Tc; analyzed levels, J, π; deduced band head configurations.

doi: 10.1007/s100500170126
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2001BA76      Acta Phys.Hung.N.S. 13, 189 (2001)

A.Bauchet, I.Deloncle, M.-G.Porquet, A.Astier, N.Buforn, M.Meyer, S.Perries, N.Redon, B.J.P.Gall, F.Hoellinger, N.Schulz, G.Duchene, S.Courtin, Ts.Venkova, P.A.Butler, N.Amzal, R.Herzberg, A.Chewter, R.Cunningham, M.Houry, R.Lucas, A.Nowak, E.Piasecki, W.Urban, J.Duprat, C.Petrache, T.Kroll

High-Spin Structures of Odd-A ₄₃^97-105Tc Isotopes

NUCLEAR REACTIONS ¹⁷⁶Yb(³⁷Cl, xn), E=170 MeV; measured Eγ, Iγ, γγ-coin following residual nucleus fission. ^{97,99,101,103,105}Tc deduced high-spin levels, J, π. Euroball 3 array, fusion-fission reaction.

doi: 10.1556/APH.13.2001.1-3.25
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2001HA15      Acta Phys.Pol. B32, 1083 (2001)

F.Hannachi, A.Korichi, A.N.Wilson, A.Lopez-Martens, M.Rejmund, C.Schuck, Ch.Vieu, G.Chmel, A.Gorgen, H.Hubel, D.Rossbach, G.Schonwasser, M.Bergstrom, B.M.Nyako, J.Timar, D.Bazzacco, S.Lunardi, C.Rossi-Alvarez, P.Bednarczyk, N.Kintz, S.Naguleswaran, A.Astier, D.M.Cullen, J.F.Sharpey-Schafer, T.Lauritsen, R.Wadsworth

Collective Excitations in the Superdeformed Well

NUCLEAR REACTIONS ¹⁶⁰Gd(³⁴S, 4n), E=156 MeV; measured Eγ, Iγ, γγ-coin, γ-ray polarization. ¹⁹⁰Hg deduced superdeformed bands, multipolarity of inter-band transitions, collective excitation of excited band. Euroball-IV array.

2001KO16      Phys.Rev.Lett. 86, 2746 (2001)

A.Korichi, A.N.Wilson, F.Hannachi, A.Lopez-Martens, M.Rejmund, C.Schuck, Ch.Vieu, G.Chmel, A.Gorgen, H.Hubel, D.Rossbach, G.Schonwasser, M.Bergstrom, B.M.Nyako, J.Timar, D.Bazzacco, S.Lunardi, C.Rossi-Alvarez, P.Bednarczyk, N.Kintz, S.Naguleswaran, A.Astier, D.M.Cullen, J.F.Sharpey-Schafer, T.Lauritsen, R.Wadsworth

Linear Polarization Measurement of Interband Transitions in Superdeformed ¹⁹⁰Hg: Model-independent evidence for octupole vibrational structures

NUCLEAR REACTIONS ¹⁶⁰Gd(³⁴S, 4n), E=156 MeV; measured Eγ, Iγ, γγ-coin, γ-ray polarization. ¹⁹⁰Hg deduced superdeformed bands, multipolarity of interband transitions, octupole collective nature of excited superdeformed band. Euroball IV array.

doi: 10.1103/PhysRevLett.86.2746
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2001PR06      Eur.Phys.J. A 10, 13 (2001)

A.Prevost, N.Buforn, A.Astier, R.Duffait, M.Meyer, S.Perries, N.Redon, O.Stezowski, A.Bauchet, I.Deloncle, M.G.Porquet, A.Gorgen, H.Hubel, E.Mergel, S.Neumann, D.Rossbach, N.Nenoff, G.Schonwasser, A.N.Wilson, R.Lucas, F.A.Beck, D.Curien, G.Duchene, B.J.P.Gall, N.Kintz, J.P.Vivien, D.M.Cullen

New Excited Superdeformed Bands in Heavy Pb Nuclei: Clue for an octupole softness near the N = 118 gap at large deformation

NUCLEAR REACTIONS ¹⁸⁶W(¹⁸O, 6n), (¹⁸O, 7n), E=117 MeV; measured Eγ, Iγ, γγ-coin. ^197,198Pb deduced superdeformed bands, configurations. Euroball IV array, cranked mean-field calculations.

doi: 10.1007/s100500170139
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2001RO20      Phys.Lett. 513B, 9 (2001)

D.Rossbach, A.Gorgen, H.Hubel, E.Mergel, G.Schonwasser, A.N.Wilson, F.Azaiez, A.Astier, D.Bazzacco, M.Bergstrom, C.Bourgeois, N.Buforn, F.Hannachi, K.Hauschild, A.Korichi, W.Korten, T.Kroll, A.Lopez-Martens, R.Lucas, H.J.Maier, N.Redon, P.Reiter, C.Rossi-Alvarez, O.Stezowski, P.Thirolf

Evidence for Octupole Vibration in Superdeformed ¹⁹⁶Pb

NUCLEAR REACTIONS ¹⁷⁰Er(³⁰Si, 4n), E=144 MeV; measured Eγ, Iγ, γγ-coin, γ-ray polarization. ¹⁹⁶Pb deduced high-spin levels, superdeformed bands, octupole vibration. Euroball IV array.

doi: 10.1016/S0370-2693(01)00749-3
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2001WI11      Phys.Lett. 505B, 6 (2001)

A.N.Wilson, J.Timar, I.Ahmad, A.Astier, F.Azaiez, M.H.Bergstrom, D.J.Blumenthal, B.Crowell, M.P.Carpenter, L.Ducroux, B.J.P.Gall, F.Hannachi, H.Hubel, T.L.Khoo, R.V.F.Janssens, A.Korichi, T.Lauritsen, A.Lopez-Martens, M.Meyer, D.Nisius, E.S.Paul, M.G.Porquet, N.Redon, J.F.Sharpey-Schafer, R.Wadsworth, J.N.Wilson, I.Ragnarsson

Magnetic Dipole Bands in ¹⁹⁰Hg: First evidence of excitations across the Z=82 sub-shell in Hg nuclei

NUCLEAR REACTIONS ¹⁶⁰Gd(³⁴S, 4n), E=153 MeV; measured Eγ, Iγ, γγ-coin, γ-ray polarization. ¹⁹⁰Hg deduced high-spin levels, J, π, B(M1)/B(E2), magnetic dipole bands. Eurogam II array, cranked mean-field calculations.

doi: 10.1016/S0370-2693(01)00332-X
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2000BU06      Eur.Phys.J. A 7, 347 (2000)

N.Buforn, A.Astier, J.Meyer, M.Meyer, S.Perries, N.Redon, O.Stezowski, M.G.Porquet, I.Deloncle, A.Bauchet, J.Duprat, B.J.P.Gall, C.Gautherin, E.Gueorguieva, F.Hoellinger, T.Kutsarova, R.Lucas, A.Minkova, N.Schulz, H.Sergolle, Ts.Venkova, A.N.Wilson

Evidence for Deformation in ^113-116Cd Isotopes

NUCLEAR REACTIONS ¹⁷⁶Yb(²⁸Si, F), E=145 MeV; measured Eγ, Iγ(θ), γγ-coin. ^{113,114,115,116}Cd deduced high-spin levels J, π, alignments, deformation. Comparison with theoretical calculations. Eurogam2 array.

doi: 10.1007/s100500050401
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2000BU23      Phys.Scr. T88, 45 (2000)

N.Buforn, A.Astier, J.Meyer, M.Meyer, S.Perries, N.Redon, M.G.Porquet, I.Deloncle, A.Bauchet, F.Azaiez, S.Bouneau, C.Bourgeois, J.Duprat, B.J.P.Gall, C.Gautherin, E.Gueorguieva, F.Hoellinger, T.Kutsarova, R.Lucas, A.Minkova, N.Schulz, H.Sergolle, T.Venkova, A.N.Wilson

High-Spin Structure of the ^113-116Cd Isotopes Produced by Heavy-Ion Induced Fission Reaction

NUCLEAR REACTIONS ¹⁷⁶Yb(²⁸Si, F)¹¹³Cd/¹¹⁴Cd/¹¹⁵Cd/¹¹⁶Cd/, E=165 MeV; measured Eγ, Iγ, γγ-coin. ^{113,114,115,116}Cd deduced high-spin levels, J, π. Level systematics in neighboring isotopes discussed. Eurogam II array.

doi: 10.1238/Physica.Topical.088a00045
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2000BU28      Eur.Phys.J. A 9, 29 (2000)

N.Buforn, A.Astier, R.Duffait, M.Meyer, S.Perries, A.Prevost, N.Redon, O.Stezowski, A.Gorgen, H.Hubel, E.Mergel, S.Neumann, D.Rossbach, N.Nenoff, G.Schonwasser, A.Bauchet, I.Deloncle, M.G.Porquet, A.N.Wilson, R.Lucas, F.A.Beck, D.Curien, G.Duchene, B.J.P.Gall, N.Kintz, J.P.Vivien, D.M.Cullen

Magnetic Properties of the νj_15/2 Intruder Orbital in the Superdeformed Minimum of ¹⁹⁷Pb

NUCLEAR REACTIONS ¹⁸⁶W(¹⁸O, 7n), E=117 MeV; measured Eγ, Iγ, γγ-coin. ¹⁹⁷Pb deduced high-spin levels, superdeformed bands interband transitions, multipolarity, B(M1)/B(E2). Euroball IV array.

doi: 10.1007/s100500070052
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