Spectroscopic study of Mo, Mo, and Mo

Mo, Mo、およびMoの分光研究

Kumar, V.*; Chapman, R.*; Ollier, J.*; Orlandi, R.   ; Smith, J. F.*; Spohr, K.-M.*; Torres, D. A.*; Wady, P.*; 他10名*

Kumar, V.*; Chapman, R.*; Ollier, J.*; Orlandi, R.; Smith, J. F.*; Spohr, K.-M.*; Torres, D. A.*; Wady, P.*; 10 of others*

Excited states of the molybdenum isotopes Mo were populated in two experiments which used fusion-fission and binary grazing reactions. In the first experiment, the GASP array of Ge detectors was used to detect rays from fusion-fission products from the S + Yb reaction at 230 MeV. In the multinucleon transfer experiment, a 530-MeV beam of Zr ions was incident on a thin Sn target; projectile-like ejectiles were detected and identified using the PRISMA magnetic spectrometer and their associated rays detected using the CLARA array of Clover detectors. Previously known bands were extended in all isotopes, and a new g band was established in Mo. The observed level schemes were compared with shell-model calculations, which reproduce the general features of the energy spectrum of excited states of Mo, Mo, and Mo, although not in detail. For the h negative-parity decay sequences of the three isotopes studied, evidence is presented for nuclear shape changes with increasing neutron number.