The European Physical Journal A

ISSN: 1434-6001 (printed version)
ISSN: 1434-601X (electronic version)

Table of Contents

Abstract Volume 2 Issue 4 (1998) pp 327-330

short notes: T-band phenomena in ¹⁸³Re

N. Hashimoto (1)(2), T.R. Saitoh (2), G. Sletten (2), R.A. Bark (2) (a), M. Bergström (2), K. Furuno (1), T. Komatsubara (1), T. Shizuma (1), S. Törmänen (2), P.G. Varmette (2) (b)

(1) Department of Physics and Tandem Accelerator Center, University of Tsukuba, Ibaraki 305-8577, Japan
(2) The Niels Bohr Institute, University of Copenhagen, Roskilde, Denmark

Received: 20 April 1998

Abstact: High-spin states in ¹⁸³Re have been studied using the ¹⁷⁶Yb(¹¹B,4n) reaction at 52 and 57 MeV. Two high-K bands have been observed directly by a time-correlated <Gamma>-<Gamma> coincidence measurement. One of the bands is built on an isomeric K^<pi>=(25/2)⁺ state at E_x = 1908 keV with a half-life of 0.82(2) ms. The other band, assigned as K^<pi>=(29/2)^- at E_x &equals 2739 keV, decays to the (25/2)⁺ band. These bands are interpreted as three-quasiparticle structures, <pi>(5/2)⁺[402] &\otimes <nu>(9/2)⁺[624] \otimes <nu>(11/2)⁺[615] for the (25/2)⁺ band and <pi>(9/2)^-[514] \otimes <nu>(9/2)⁺[624] \otimes <nu>(11/2)⁺[615] for the (29/2)^- band. The K^<pi> = (29/2)^- band becomes strongly Coriolis mixed with increasing spin and is gradually changing into a low-K s-band structure.

PACS: 21.10.Tg Lifetimes - 23.20.Lv Gamma transitions and level energies

(a) Present address: Dept. of Nuclear Physics, RSPhysSE, Australian National University, Canberra ACT 0200, Australia
(b) Correspondence to: nami@tac.tsukuba.ac.jp
Communicated by B. Herskind

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Online publication: August 10, 1998
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