Phys.Rev. C 92, 014328 (2015)

M.Czerwinski, T.Rzaca-Urban, W.Urban, P.Baczyk, K.Sieja, B.M.Nyako, J.Timar, I.Kuti, T.G.Tornyi, L.Atanasova, A.Blanc, M.Jentschel, P.Mutti, U.Koster, T.Soldner, G.de France, G.S.Simpson, C.A.Ur

Neutron-proton multiplets in the nucleus ⁸⁸Br

NUCLEAR REACTIONS ²³⁵U(n, F), E=cold neutrons; measured Eγ, Iγ, γγ-coin, γγ-coin with γ rays from complementary fission fragments ^145,146La, delayed γ spectra, level half-lives by γ(t), γγ(θ) using EXILL array of Ge detectors at the PF1B facility of ILL-Grenoble. ^95,97Sr; measured level half-lives of isomers by γγ(t). ^145,146La; measured Eγ, γγ-coin. ⁸⁸Br; deduced levels, J, π, multipolarity, mixing ratio, configurations, single-particle estimates of partial half-lives for decay branches of the 1787.3-keV level, proton-neutron multiplets. Comparison with detailed shell-model calculations, and with levels in ⁸⁶Br.

doi: 10.1103/PhysRevC.92.014328