Nuclear structure study of 96Tc and multiplet structure in doubly odd Tc and Nb isotopes

Abstract

Low-lying states in 96Tc excited through the 96Mo(d, 2nγ) reaction have been investigated by means of on-line internal conversion electron and γ-ray spectroscopy. Measured singles spectra and relative excitation functions together with particle-γ and γ-γ coincidences were used to identify and fit the transitions in a level scheme. The low-lying positive-parity states 2 +–7 +and negative-parity states 2 − and 3 − are compared with those appearing systematically in doubly odd 94, 98Tc and 92–96Nb isotopes. Comparison is also made with simple shell-model calculations for those nuclei based on the π( p 1 2 , g 9 2 ) p ν ( d 5 2 ) n configuration space and the tendency of the multiplet structure of the wave functions is discussed.