The Spectroscopy of {sup 183}Tl: An Extreme Case of Prolate-Oblate Shape-Competition

Conference · Mon Aug 10 00:00:00 EDT 1998

OSTI ID:4543

Batchelder, J C; Bingham, C R; Carpenter, M P; Cizewski, J A; Gross, C J; Helariutta, K; Janssens, R V.F.; Jenkins, D; Juutinen, S; Reviol, W; Riedinger, L L; Seweryniak, D; Toth, K S; Uusitalo, J; Wadsworth, R; Weintraub, W; Wiedenhover, I; Wilson, A N

The yrast sequence in {sup 183}Tl has been studied for the first time in recoil-mass and decay tagged gamma-ray spectroscopic measurements. A rotational-like cascade of seven transitions is observed down to the bandhead with spin 13/2+. In contrast to adjacent nuclei, links from the yrast band to a lower lying weakly deformed (oblate) structure are not observed. It appears that the prolate energy minimum in {sup 183}Tl drops significantly compared to {sup 185}Tl and minimizes below the neutron i13/2 midshell (n <= 102). Possibilities for the decay out of the band in {sup 183}Tl are discussed.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-96OR22464
• OSTI ID: 4543
• Report Number(s): ORNL/CP-102165; KB 04 01 02 1; KB 04 01 02 1; TRN: US0101502
• Resource Relation: Conference: Conference on Nuclear Structure '98, Gatlinburg, TN (US), 08/10/1998--08/15/1998; Other Information: PBD: 10 Aug 1998
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
THALLIUM 183
DECAY
GAMMA SPECTROSCOPY
SPIN
YRAST STATES