Abstract
Consideration of the expected two-quasiparticle structures and their estimated band head energies, and the selection rules for beta transition rates for the154Nd →154Pm →154Sm decays are used to deduce the configurations for the isomers and the low-spin structures in the neutron rich doubly odd nucleus61154Pm93. The 2.68 m high spin isomer and the 1.73 m low spin isomer are respectively assigned the spin-parity 4+ and 1+ with the configuration {p:5/2− [532↑] +n:3/2− [521↑]} with the 2.68 m isomer lying lower in energy, and thus forming the154Pm ground state. Two-quasiparticle character of the beta-connected states in154Nd decay and154Pm decay is discussed.
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