2018 Impact factor 2.481
Hadrons and Nuclei

Eur. Phys. J. A 9, 293-297

Short note

DSA lifetime measurements and structure of positive-parity bands of \ensuremath{\mathsf{^{120}Xe}}

A.A. Pasternak1 - Y. Sasaki2 - A.D. Efimov1 - V.M. Mikhajlov3 - T. Hayakawa4 - Y. Toh4 - M. Oshima4 - Y. Hatsukawa4 - J. Katakura4 - N. Shinohara4 - Z. Liu5 - K. Furuno2

1 Cyclotron Laboratory, A.F. Ioffe Physical Technical Institute, 194021, St. Petersburg, Russia
2 Tandem Accelerator Center, University of Tsukuba, Tennoudai, Tsukuba 305-8577, Japan
3 Physical Institute of St. Petersburg State University, 198904, St. Petersburg, Russia
4 Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
5 RIKEN, Wako-shi, Saitama 351-0106, Japan

Received: 29 June 2000 / Revised version: 14 October 2000
Communicated by D. Schwalm

Abstract
Lifetimes of excited states in \ensuremath{\mathsf{^{120}Xe}} have been measured by the Doppler-shift attenuation method in the \ensuremath{\mathsf{^{111}Cd}}( \ensuremath{\mathsf{^{12}C}},3n) reaction at a beam energy of E = 56MeV. Lifetime values for 22 states were obtained. The excitation energies and E2-transition probabilities of the yrast band, $\gamma$-band and its continuation are interpreted in the framework of a version of IBFM (IBM + 2 q.p.). A reasonable description of the B(E2) behavior in the backbending region is achieved.

PACS
21.10.Tg Lifetimes - 21.60.Fw Models based on group theory - 23.20.Lv Gamma transitions and level energies - 27.60.+j 90$\le A \le$149


Copyright Società Italiana di Fisica, Springer-Verlag 2000