Transition strengths and shapes of 2-qp bands in Se-74 and Kr-76

Citation
G. Mukherjee et al., Transition strengths and shapes of 2-qp bands in Se-74 and Kr-76, PRAMANA-J P, 53(3), 1999, pp. 425-429
Citations number
9
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PRAMANA-JOURNAL OF PHYSICS
ISSN journal
0304-4289 → ACNP
Volume
53
Issue
3
Year of publication
1999
Pages
425 - 429
Database
ISI
SICI code
0304-4289(199909)53:3<425:TSASO2>2.0.ZU;2-3
Abstract
The lifetimes of the states of -ve parity 2-qp bands of N = 40 nuclei Se-74 and Kr-76 were measured. The transition strengths and quadrupole moments, obtained from the lifetimes, show a large collectivity of such bands in bot h the nuclei. The alignment frequencies were calculated from Woods-Saxon cr anking model. Previously suggested quasi proton nature of band 5 and 6 of S e-74 were argued to be based on quasi neutron excitations. The total Routhi an surface calculations suggest triaxial shapes with large +ve and -ve valu es of triaxiality parameter gamma after proton and neutron alignments in th ese bands respectively.