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

A.A. Pasternak; Y. Sasaki; A.D. Efimov; V.M. Mikhajlov; T. Hayakawa; Y. Toh; M. Oshima; Y. Hatsukawa; J. Katakura; N. Shinohara; Z. Liu; K. Furuno

doi:doi:10.1007/s100500070011

2022 Impact factor 2.7

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.