Triaxial nuclear shapes at high angular momentum

C. Wheldon; P. M. Walker; P. H. Regan; T. Saitoh; N. Hashimoto; G. Sletten; F. R. Xu

doi:10.1103/PhysRevC.59.R2334

Rapid Communication

Triaxial nuclear shapes at high angular momentum

C. Wheldon, P. M. Walker, P. H. Regan, T. Saitoh, N. Hashimoto, G. Sletten, and F. R. Xu

Phys. Rev. C 59, R2334(R) – Published 1 May 1999

Abstract

High-angular-momentum states in the deformed nucleus $^{186} Os$ have been studied following fusion-evaporation reactions with a radioactive $^{14} C$ beam. A high- $K t$ -band has been observed and its role in the first crossing of the ground-state band established. The lack of isomerism of the identified $I >~ 18$ multi-quasiparticle yrast states is presented as new evidence for triaxial shapes.

Received 3 November 1998

DOI:https://doi.org/10.1103/PhysRevC.59.R2334

Authors & Affiliations

C. Wheldon¹, P. M. Walker¹, P. H. Regan¹, T. Saitoh², N. Hashimoto^2,*, G. Sletten², and F. R. Xu^1,†

¹Department of Physics, University of Surrey, Guildford GU2 5XH, England
²The Niels Bohr Institute, Risø, DK-4000 Roskilde, Denmark

^*Permanent address: Department of Physics and Tandem Accelerator Center, University of Tsukuba, Ibaraki, Japan.
^†Permanent address: Department of Technical Physics, Peking University, Beijing 100871, China.

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Vol. 59, Iss. 5 — May 1999

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Physical Review C

covering nuclear physics