Phys.Rev. C 106, 024322 (2022)

T.Rzaca-Urban, K.Sieja, M.Czerwinski, J.Kurpeta, M.Pomorski, W.Urban, J.Wisniewski, M.Wroblewski, L.Canete, T.Eronen, S.Geldhof, A.Jokinen, A.Kankainen, I.D.Moore, D.Nesterenko, H.Penttila, I.Pohjalainen, S.Rinta-Antila, A.de Roubin, M.Vilen

Low-spin excitations in ⁸⁹Br populated in β^- decay of ⁸⁹Se

RADIOACTIVITY ⁸⁹Se(β^-), (β^-n)[from U(p, F), E=30 MeV, followed by separation of fragments using Ion Guide Isotope Separator On-Line (IGISOL) facility and JYFLTRAP at Jyvaskyla]; measured fission fragment yields, Eγ, Iγ, γγ-coin. ⁸⁹Se; deduced J, π, T_1/2, %β^-n or P_n for g.s. decay. ⁸⁹Br; deduced levels, J, π, multipolarities, β feedings, Gamow-Teller transition, logft, configurations, occupation of neutron and proton orbitals. ⁸⁸Br; deduced levels, J, π. Comparison with large-scale shell-model calculations. Systematics of level energies, J, π in ^83,85,87As, ^{69,71,73,75,77,79,81,83,85,87,89}Br, ^87,89,91Rb, ^89,91,93Y, ^91,93,95Nb.

doi: 10.1103/PhysRevC.106.024322