T-band phenomena in $^{183}$Re

N. Hashimoto; T.R. Saitoh; G. Sletten; R.A. Bark; M. Bergström; K. Furuno; T. Komatsubara; T. Shizuma; S. Törmänen; P.G. Varmette

doi:doi:10.1007/s100500050127

EPJ

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2023 Impact factor 2.6

Hadrons and Nuclei

Eur. Phys. J. A 2, 327-330

Short note

T-band phenomena in ¹⁸³Re

N. Hashimoto^1,2 - T.R. Saitoh² - G. Sletten² - R.A. Bark² - M. Bergström² - K. Furuno¹ - T. Komatsubara¹ - T. Shizuma¹ - S. Törmänen² - P.G. Varmette²

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 Communicated by B. Herskind

Abstract
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 $K^\pi=\frac{25}{2}^+$ state at E_x = 1908 keV with a half-life of 0.82(2) ms. The other band, assigned as $K^\pi=\frac{29}{2}^-$ at E_x = 2739 keV, decays to the $\frac{25}{2}^+$ band. These bands are interpreted as three-quasiparticle structures, $\pi\frac{5}{2}^+[402]$ $\otimes$ $\nu\frac{9}{2}^+[624]$ $\otimes$ $\nu\frac{11}{2}^+[615]$ for the $\frac{25}{2}^+$ band and $\pi\frac{9}{2}^-[514]$ $\otimes$ $\nu\frac{9}{2}^+[624]$ $\otimes$ $\nu\frac{11}{2}^+[615]$ for the $\frac{29}{2}^-$ band. The $K^\pi=\frac{29}{2}^-$ band becomes strongly Coriolis mixed with increasing spin and is gradually changing into a low-K s-band structure.