Recoil-distance lifetime measurements in {sup 96,97,98}Ru : search for possible onset of collectivity at N {ge} 52.

Journal Article · Tue Feb 01 04:00:00 EST 2000 · Phys. Rev. C

OSTI ID:942593

Kharraja, B; Ghugre, S S; Garg, U; Jin, H; Janssens, R V. F.; Ahmad, I; Amro, H; Carpenter, M P; Fischer, S; Khoo, T L; Lauritsen, T; Nisius, D; Mueller, W F; Reviol, W; Riedinger, L L; Kaczarowski, R; Ruchowska, E; Ma, W C; Govil, I M

Lifetimes of high-spin states in the N=52-54 Ru nuclei have been investigated via the {sup 65}Cu({sup 36}S,pyn){sup 96,97,98}Ru (y=4,3,2) reactions using the recoil-distance Doppler-shift technique. The data were collected in coincidence mode. Lifetimes have been extracted for both the positive- and the negative-parity states in {sup 96}Ru and {sup 98}Ru and for the positive-parity states in {sup 97}Ru. The levels studied have lifetimes in the range 2-31 ps. The observed reduced transition probabilities B(E2) and B(M1) are compared with the predictions of the shell model. Theoretical implications of these results are discussed.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 942593
• Report Number(s): ANL/PHY/JA-32816
• Journal Information: Phys. Rev. C, Journal Name: Phys. Rev. C Journal Issue: 024301 ; Feb. 2000 Vol. 61; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DATA
ENERGY LEVELS
LIFETIME
NUCLEI
RUTHENIUM ISOTOPES
SHELL MODELS