2018 Impact factor 2.481
Hadrons and Nuclei
Note


Eur. Phys. J. A 12, 253-255 (2001)

Short Note

In-beam study of $\chem{^{145}Tb}$

X.H. Zhou1, Y. Zheng1, Y.H. Zhang1, Z. Liu1, Q.Y. Pan1, Z.G. Gan1, T. Hayakawa2, M. Oshima2, T. Toh2, T. Shizuma2, J. Katakura2, Y. Hatsukawa2, M. Matsuda2, H. Kusakari3, M. Sugawara4, K. Furuno5 and T. Komatsubara5

1  Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, PRC
2  Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan
3  Chiba University, Inage-ku, Chiba 263-8512, Japan
4  Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan
5  Institute of Physics and Tandem Accelerator Center, University of Tsukuba, Japan

ysg@ns.lzb.ac.cn

(Received: 21 September 2001 Communicated by D. Schwalm)

Abstract
The high-spin states of 145Tb have been studied in the 118Sn( 32 S, 1p4n) reaction at 32S energies from 161 to 175 MeV using techniques of in-beam $\gamma $-ray spectroscopy. Measurements of $\gamma $-ray excitation functions and $\gamma $- $\gamma $- t coincidences were performed with 12 BGO(AC)HPGe detectors. Based on the measured results of $\gamma $- $\gamma $ coincidences, $\gamma $-ray anisotropies and DCO ratios, a level scheme for 145Tb was established for the first time. The observed excited states show typical irregular pattern in a spherical nucleus, and the low-lying levels have been interpreted qualitatively with a particle-core coupling.

PACS
23.20.Lv - Gamma transitions and level energies.
27.60.+j - $90\leq A \leq 149$ .

© Società Italiana di Fisica, Springer-Verlag 2001