Phys.Rev. C 105, 044327 (2022)

V.Bothe, S.K.Tandel, S.G.Wahid, P.C.Srivastava, B.Bhoy, P.Chowdhury, R.V.F.Janssens, F.G.Kondev, M.P.Carpenter, T.Lauritsen, D.Seweryniak, S.Zhu

Isomers in ²⁰³Tl and core excitations built on a five-nucleon-hole structure

NUCLEAR REACTIONS ¹⁹⁷Au(²⁰⁹Bi, X)²⁰³Tl, E=1450 MeV; measured Eγ, Iγ, γγ-coin, γγγ-coin. ²⁰³Tl; deduced levels, J, π, multipolarities, T_1/2 of high-spin isomeric states, configurations. Half-lives determined by centroid-shift method for ns isomers and by variation with time of the cumulative intensity for υs isomers. Observed octupole core excitations built on a five-nucleon hole configuration. Comparison with shell-model calculations employing the KHH7B effective interaction. Gammasphere array with 100 detectors at ATLAS accelerator (ANL).

doi: 10.1103/PhysRevC.105.044327