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	Level structure with high excitation states in Ba-134
	Che Xing-Lai ; Zhu Sheng-Jiang ; Li Ming-Liang ; Yu Ying-Nan ; Chen Yong-Jing ; Ding Hui-Bo ; Xu Qiang ; Zhu Li-Hua ; Wu Xiao-Guang ; Li Guang-Sheng ; Liu Ying ; He Chuang-Ye
	2010-05-06 ; 2010-05-06
关键词	nuclear structure collective back-bending gamma-gamma coincidence isomer HIGH-SPIN STATES Physics, Nuclear Physics, Particles & Fields
中文摘要	The high spin states in neutron-deficient Ba-134 nucleus have been studied by using heavy ion induced reaction Te-130(Be-9,5n) and in-beam gamma-ray spectroscopy caxried out at China Institute of Atomic Energy. The level scheme has been updated with spin up to 20h. Most of levels and transitions reported in the previous publications have been confirmed. The levels in the ground state band was expanded to 10(+) state, and many levels and transitions above the 10+ isomer have been identified. Based on the systematical analyzing, the 10(+) isomer in Ba-134 is a yrast trap of prolate deformation with gamma approximate to -120 degrees which is originated from two neutron configuration. Above the 10+ isomer level, the new levels show strong single-particle motion and complex structural characteristics. The obvious collective back-bending has been observed in the ground state band. The CSM calculations indicate that the back-bending of Ba-134 is caused by alignment of a pair of h(11/2) quasi-neutrons. The nuclear shape has obviously changed with rotational frequency increasing according to the TRS calculations, and the nucleus probably has an oblate deformation with gamma approximate to -60 degrees after the neutron alignment.
语种	中文 ; 中文
出版者	SCIENCE CHINA PRESS ; BEIJING ; 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/14818]
专题	清华大学
推荐引用方式 GB/T 7714	Che Xing-Lai,Zhu Sheng-Jiang,Li Ming-Liang,et al. Level structure with high excitation states in Ba-134[J],2010, 2010.
APA	Che Xing-Lai.,Zhu Sheng-Jiang.,Li Ming-Liang.,Yu Ying-Nan.,Chen Yong-Jing.,...&He Chuang-Ye.(2010).Level structure with high excitation states in Ba-134..
MLA	Che Xing-Lai,et al."Level structure with high excitation states in Ba-134".(2010).

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