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NSR database version of April 27, 2024.

Search: Author = S.Tusseau-Nenez

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2021CA11      Phys.Rev. C 103, 034308 (2021)

M.A.Cardona, D.Hojman, B.Roussiere, I.Deloncle, N.Barre-Boscher, M.C.Mhamed, E.Cottereau, B.I.Dimitrov, G.Tz.Gavrilov, A.Gottardo, C.Lau, S.Roccia, S.Tusseau-Nenez, D.Verney, M.S.Yavahchova

¹⁴⁵Ba β^- decay: Excited states and half-lives in neutron-rich ¹⁴⁵La

RADIOACTIVITY ¹⁴⁵Ba(β^-)[from ²³⁸U(γ, F), E=bremsstrahlung beam from 50 MeV electrons]; measured Eγ, Iγ, βγ- and γγ-coin, level half-lives by βγ(t) and γγ(t) using fast timing technique with HPGe and LaBr₃(Ce) detectors at the ALTO-PARRNe facility of IPN-Orsay. ¹⁴⁵La; deduced levels, J, π, β feedings, logft, B(M1)/B(E2), configurations. Systematics of d_5/2 to g_7/2 transitions in ^{133,135,137,139,141,143,145}La. Comparison with particle rotor model (PRM) calculations. ¹⁴⁵Cs, ^144,145La, ¹⁴⁵Ce, ¹⁴⁵Pr, ¹⁴⁴Ba, ¹²⁶In; observed γ rays in βγ-coin spectra from β^- decays of these nuclides.

NUCLEAR REACTIONS ²³⁸U(γ, F)¹⁴²Cs/¹⁴²Ba/¹⁴⁴Cs/¹⁴⁵Cs/¹⁴⁵Ba/¹⁴⁶Cs/¹⁴⁶Ba, E=bremsstrahlung beam from 50 MeV electrons]; measured yields.

doi: 10.1103/PhysRevC.103.034308
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2015ET01      Phys.Rev. C 91, 064317 (2015)

A.Etile, D.Verney, N.N.Arsenyev, J.Bettane, I.N.Borzov, M.C.Mhamed, P.V.Cuong, C.Delafosse, F.Didierjean, C.Gaulard, Nguyen Van Giai, A.Goasduff, F.Ibrahim, K.Kolos, C.Lau, M.Niikura, S.Roccia, A.P.Severyukhin, D.Testov, S.Tusseau-Nenez, V.V.Voronov

Low-lying intruder and tensor-driven structures in ⁸²As revealed by β decay at a new movable-tape-based experimental setup

RADIOACTIVITY ⁸²Ge(β^-)[from ²³⁸U(e, F), E=50 MeV followed by online mass separation using PARRNe mass separator at ALTO ISOL facility of IPN-Orsay]; measured Eγ, Iγ, βγ-, γγ-coin, half-life of ⁸²Ge isotope using BEDO detector assembly. ⁸²As; deduced levels, J, three potential 1+ states, π, β feedings, logft. Comparison with experimental and theoretical values of two 1+ states in ⁸²As and ⁸⁰Ga. Comparison with empirical core-particle coupling model and fully microscopic treatment within Skyrme-QRPA (quasiparticle random-phase approximation) approach. Discussed Gamow-Teller fragmentation due to tensor correlations and couplings to 2p-2h excitations. ⁸²Ga(β^-); measured half-life from growth-decay curve for 1348-keV γ ray, and compared with earlier experimental value. ^81,82,82mAs, ^81,81mGe, ⁸²Ga, ^130,132Sb, ¹³²Sn(β^-), ⁸²Ga(β^-n); observed γ rays from fission fragments present in the sample.

NUCLEAR STRUCTURE ⁸¹Ga, ⁸³As, ⁸⁵Br, ⁸⁷Rb; calculated proton QP energies, occupation probabilities. ⁸⁰Ga, ⁸²As, ⁸⁴Br, ⁸⁶Rb; calculated unperturbed energies of neutron-proton 2-qp states. ⁸¹Ge, ^82,83As, ⁸⁵Kr, ^86,87Rb; calculated levels, J, π. ⁸⁰Ga, ⁸²As; calculated energies and structures of the QRPA dipole (1+) neutron-proton 2-qp states. Comparison with experimental data. Empirical core-particle coupling model and fully microscopic treatment within Skyrme-QRPA approach.

doi: 10.1103/PhysRevC.91.064317
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