HIGH-SPIN BEHAVIOR OF EU-153

Citation
S. Basu et al., HIGH-SPIN BEHAVIOR OF EU-153, Physical review. C. Nuclear physics, 56(4), 1997, pp. 1756-1761
Citations number
22
Categorie Soggetti
Physics, Nuclear
ISSN journal
05562813
Volume
56
Issue
4
Year of publication
1997
Pages
1756 - 1761
Database
ISI
SICI code
0556-2813(1997)56:4<1756:HBOE>2.0.ZU;2-W
Abstract
The high-spin behavior of Eu-153 nucleus has been investigated via the Nd-150(Li-7,4n gamma) reaction. The level structures of the nucleus b uilt on the 5/2(+) ground state and the 5/2(-) excited state have been established up to spins 39/2(+) and 43/2(-), respectively, and are ob served to be interleaved through strong El transitions. From the B(E1) /B(E2) ratios of the high-spin region the intrinsic electric-dipole mo ment is deduced and is found to be 0.181+/-0.007 e fm and beta(3) thus obtained is similar to 0.03. The rotational features and magnetic mom ents indicate that an octupole correlated deformation has developed wi th the increasing spin. A theoretical study of the correlation between the beta(3) and the band crossing frequency supports the conjecture o f octupole deformation at high spin.