First evidence for the wobbling mode in a triaxial superdeformed odd-A nucleus

Authors
Hamamoto, I Odegard, SW Hagemann, GB Jensen, DR Bergstrom, M Herskind, B Sletten, G Tormanen, S Wilson, JN Tjom, PO Spohr, K Hubel, H Gorgen, A Schonwasser, G Bracco, A Leoni, S Maj, A Petrache, CM Bednarczyk, P Curien, D
Citation
I. Hamamoto et al., First evidence for the wobbling mode in a triaxial superdeformed odd-A nucleus, ACT PHY P B, 32(9), 2001, pp. 2545-2558
Citations number
15
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA POLONICA B
ISSN journal
05874254 → ACNP
Volume
32
Issue
9
Year of publication
2001
Pages
2545 - 2558
Database
ISI
SICI code
0587-4254(200109)32:9<2545:FEFTWM>2.0.ZU;2-X
Abstract
The wobbling mode is uniquely related to rotation of a triaxial body. The L u-Hf isotopes with N similar to 94 provides a possible region of nuclei wit h pronounced triaxiality. We have investigated Lu-163 through the fusion-ev aporation reaction La-139(Si-29,5n)Lu-163 with a beam energy of 152 MeV. Th e electromagnetic properties of several connecting transitions between two presumably Triaxial, SuperDeformed (TSD) bands have been studied. New parti cle-rotor calculations in which an aligned i(13/2) proton is coupled to a " wobbling" core are presented and evidence for the assignment of the excited TSD band as a wobbling mode built on the yrast TSD band in Lu-163 is given .