2018 Impact factor 2.481
Hadrons and Nuclei
Eur. Phys. J. A 2, 237-239

Short note

Lifetime measurement of the ($\frac{11}{2}^{-}$) isomer in 125Cs

M. Sugawara1 - H. Kusakari2 - T. Murakami3 - T. Kohno4

1 Chiba Institute of Technology, Narashino, Chiba 275, Japan
2 Faculty of Education, Chiba University, Inage-ku, Chiba 263, Japan
3 Division of Accelerator Physics and Engineering, National Institute of Radiological Sciences, Inage-ku, Chiba 263, Japan
4 Department of Energy Sciences, Tokyo Institute of Technology, Midori-ku, Yokohama 226, Japan

Received: 14 April 1998 Communicated by B. Herskind

Abstract
The lifetime of the ($\frac{11}{2}^{-}$) state at 267keV in 125Cs was measured. A Ge detector with the transistor reset preamplifier(TRP Ge) was used to measure delayed $\gamma$-rays under an intense prompt background. The B(M2) value deduced from the lifetime was found to be consistent with the Weisskopf estimate.

PACS
21.10.Tg Lifetimes - 23.20.Js Multipole matrix elements - 27.60.+j $90 \le A \le 149$

Author for correspondance: p21sugaw@cc.it-chiba.ac.jp


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