Confirmation of the shears mechanism in near-spherical tin nuclei

Citation
Dg. Jenkins et al., Confirmation of the shears mechanism in near-spherical tin nuclei, PHYS REV L, 83(3), 1999, pp. 500-503
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
83
Issue
3
Year of publication
1999
Pages
500 - 503
Database
ISI
SICI code
0031-9007(19990719)83:3<500:COTSMI>2.0.ZU;2-B
Abstract
Lifetimes of states of a magnetic dipole band in each of the nuclei Sn-106, Sn-108 have been obtained using the Doppler shift attenuation method. The d educed B(M1) transition rates show the characteristic behavior associated w ith the shears mechanism. A simplified semiclassical analysis yields B(M1) values in qualitative agreement with those expected for previously assigned configurations. The results suggest extremely low deformations for these d ipole structures. In particular, the Sn-106 band appears to be the first ex ample of almost pure magnetic rotation in a spherical nucleus.