Empirical shell model and high-spin level structure of near-spherical nucleus 142Pm

In-beam γ-ray spectroscopy experiment for odd-odd nucleus 142Pm has been performed via the 128Te(19F, 5n)142Pm reaction. Detailed analysis of γ-γ coincidence relationships leads to a revised high-spin level scheme for 142Pm above the previously known 2 ms 8- isomer. The πh11/2νh11/2-1 multiplet and the (πg7/2-1νh11/2-1)9- state in this nucleus have been identified based on systematic of corresponding states in neighboring odd-odd nuclei. Configurations of several levels have been suggested from an empirical shell model approach. The 67-μs isomer is proposed to be a fully-aligned 4-hole state with predominantly the ((πg7/2-1d5/2-2)15/2+ direct x νh11/2-1)13- configuration. (authors)