Spectroscopic study of Th228-234 nuclei using multi-nucleon transfer reactions

Citation
N. Amzal et al., Spectroscopic study of Th228-234 nuclei using multi-nucleon transfer reactions, J PHYS G-NU, 25(4), 1999, pp. 831-834
Citations number
6
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
ISSN journal
0954-3899 → ACNP
Volume
25
Issue
4
Year of publication
1999
Pages
831 - 834
Database
ISI
SICI code
0954-3899(199904)25:4<831:SSOTNU>2.0.ZU;2-4
Abstract
Light-actinide nuclei in the octupole deformed region have been populated u sing multi-nucleon transfer from Th-232. The energy level schemes of severa l thorium isotopes with A = 228-234 have been extended up to I similar to 2 4 (h) over bar and negative parity states have been observed for the first time in Th-234. A systematic study of the difference in alignment between t he positive- and negative-parity bands in thorium nuclei in this mass regio n shows that Th-228,Th-230,Th-234 behave like octupole vibrators, in contra st with Th-224,Th-226, which are octupole-deformed in character. An intrins ic electric dipole moment has been measured for the first time in Th-234. T he small value obtained is consistent with the vibrational description of t his nucleus.