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	双奇核~(136)La的集体带结构
	朱胜江 ; 肖树冬 ; 车兴来 ; 禹英男 ; 李明亮 ; 陈永静 ; 竺礼华 ; 温书贤 ; 吴晓光 ; 李广生 ; ZHU Sheng-Jiang ; XIAO Shu-Dong ; CHE Xing-Lai ; YU Ying-Nan ; LI Ming-Liang ; CHEN Yong-Jing ; ZHU Li-Hua ; WEN Shu-Xian ; WU Xiao-Guang ; LI Guang-Sheng
	2010-06-07 ; 2010-06-07
关键词	核结构 旋称反转 集体回弯 扁椭形变 nuclear structure, signature inversion, collective backbending, oblate deformation O571.21
其他题名	Collective Band Structures in Doubly Odd ~(136)La Nucleus
中文摘要	通过重离子核反应与在束γ谱的实验技术,对A=130缺中子核区的双奇核~(136)La的高自旋态进行了研究,所用核反应为~(130)Te(~(11)B,5n)。实验结果扩展了~(136)La的能级纲图,包括3个集体转动带,最高自旋态达20h。对于πh_(11/2)vh_(11/2)带,观测到了旋称反转与集体回弯现象。通过系统学比较,对旋称反转特性进行了讨论。由推转壳模型的计算指出,此集体回弯是由一对中子的角动量顺排引起的。另外两个集体带为具有γ≈-60°的扁椭形变带,其可能的组态为:πh_(11/2)vg_(7/2)h_(11/2)~2与πg_(7/2)vg_(7/2)~2d_(5/2)h_(11/2)~2。; Using heavy-ion nuclear reaction and in-beam 7-ray spectroscopy technique, high spin states of ~(136)La have been studied. The nuclear reaction used is ~(130)Te(~(11)B, 5n) with a beam energy 60MeV. The level scheme with three collective band structures has been updated with spin up to 20h. The collective backbending has been observed in πh_(11/2) vh_(11/2) band. According to the TRS calculations, this backbending is due to the alignment of a pair of h_(11/2) neutrons. The signature splitting and inversion for the πh_(11/2) vh_(11/2) band were also discussed. Other two bands based on 12~- and 16~+ levels were proposed as oblate deformation with γ≈-60°. They most probably originate from four and six- quasiparticle configurations, that is, πh_(11/2) vg_(7/2)h_(11/2)~2 and πg_(7/2) vg_(7/2)~2 d_(5/2)h_(11/2)~2 respectively.; 国家重点基础研究发展规划项目(G2000077405); 国家自然科学基金(10375032); 国家教育部博士点专项基金(20030003090)~~
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/40918]
专题	清华大学
推荐引用方式 GB/T 7714	朱胜江,肖树冬,车兴来,等. 双奇核~(136)La的集体带结构[J],2010, 2010.
APA	朱胜江.,肖树冬.,车兴来.,禹英男.,李明亮.,...&LI Guang-Sheng.(2010).双奇核~(136)La的集体带结构..
MLA	朱胜江,et al."双奇核~(136)La的集体带结构".(2010).

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