Nuclear structure information from isovector electromagnetic transitions in ⁵¹V

Abstract

Isovector E2 and M1 transitions from the ⁵¹V analogue of the ⁵¹Ti ground state are calculated with shell-model wave functions derived by Pellegrini and by Auerbach using empirical interaction matrix elements. On the whole, the calculated transition rates agree fairly well with those recently measured by the Copenhagen group. In order to obtain detailed agreement, it is necessary to include additional configurations in the parent analogue state and consider admixtures from Gamow-Teller collective states in the final states. Of the two possible solutions for the mixing ratio δ(E2/M1) in the transition to the first 3/2 ^- level, the smaller one is strongly favoured.