W. Reviol et al., SPECTROSCOPY OF RU-96, RU-97, RU-98 - POSSIBLE EMERGENCE OF COLLECTIVITY AT N-GREATER-THAN-OR-EQUAL-TO-52, Nuclear physics. A, 557, 1993, pp. 30000391-30000400
Detailed experimental information on high-spin states (up to approxima
tely 20 hBAR) in the N greater-than-or-equal-to 52 nuclei Ru-96, Ru-97
, Ru-98 has been obtained from gamma-ray spectroscopic studies followi
ng (Cu(S,pxn))-Cu-65-S-36 reactions. The level schemes exhibit sequenc
es of presumably negative-parity states linked by E2 transitions with
monotonously increasing energies. These sequences coexist with the pos
itive-parity yrast states where the transition energies are rather irr
egular. The negative-parity structures are suggestive of the emergence
of rotational collectivity. The data are compared with TRS calculatio
ns for deformed h11/2 neutron configurations.