Recoil-distance lifetime measurements in Ru-96,Ru-97,Ru-98: Search for possible onset of collectivity at N >= 52 - art. no. 024301

Authors
Kharraja, B Garg, U Ghugre, SS Jin, H Janssens, RVF Ahmad, I Amro, H Carpenter, MP Fischer, S Khoo, TL Lauritsen, T Nisius, D Reviol, W Mueller, WF Riedinger, LL Kaczarowski, R Ruchowska, E Ma, WC Govil, IM
Citation
B. Kharraja et al., Recoil-distance lifetime measurements in Ru-96,Ru-97,Ru-98: Search for possible onset of collectivity at N >= 52 - art. no. 024301, PHYS REV C, 6102(2), 2000, pp. 4301
Citations number
15
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW C-NUCLEAR PHYSICS
ISSN journal
05562813 → ACNP
Volume
6102
Issue
2
Year of publication
2000
Database
ISI
SICI code
0556-2813(200002)6102:2<4301:RLMIRS>2.0.ZU;2-C
Abstract
Lifetimes of high-spin states in the N=52-54 Ru nuclei have been investigat ed via the Cu-65(S-36, pyn) Ru-96,Ru-97,Ru-98 (y = 4,3,2) reactions using t he recoil-distance Doppler-shift technique. The data were collected in coin cidence mode. Lifetimes have been extracted for both the positive- and the negative-parity states in Ru-96 and Ru-98 and for the positive-parity state s in Ru-97. The levels studied have lifetimes in the range 2-31 ps. The obs erved reduced transition probabilities B(E2) and B(M1) are compared with th e predictions of the shell model. Theoretical implications of these results are discussed.