First evidence for triaxial superdeformation in Hf-168

Citation
H. Amro et al., First evidence for triaxial superdeformation in Hf-168, PHYS LETT B, 506(1-2), 2001, pp. 39-44
Citations number
22
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
506
Issue
1-2
Year of publication
2001
Pages
39 - 44
Database
ISI
SICI code
0370-2693(20010503)506:1-2<39:FEFTSI>2.0.ZU;2-7
Abstract
Three superdeformed (SD) bands have been found in Hf-168. Lifetime measurem ents revealed a large quadrupole moment, Q(t) similar to 11.4 e b, for the strongest band (TSD1). Theoretical calculations using the Ultimate Cranker code predict high-spin SD minima (epsilon (2) similar to 0.43) with stable triaxial deformations of gamma similar to +20 degrees and gamma similar to -15 degrees. The measured Q(t) value suggests that band TSD1 corresponds, m ost likely, to a deformation with a positive gamma value. This constitutes the first evidence for triaxial superdeformation in an even proton system. (C) 2001 Published by Elsevier Science B.V.