双奇核172Re高自旋态实验研究

原子核物理评论 , 2004, 21(4): 320-323. doi: 10.3969/j.issn.1007-4627.2004.04.015

双奇核172Re高自旋态实验研究

张玉虎 ^1, , 王华磊 ^2, , 周小红 ^3, , 柳敏良 ^4, , M.Oshima ^5, , Y.Toh ^6, , M.Koizimi ^7, , A.Osa ^8, , A.Kimura ^9, , Y.Hatsukawa ^10, , T.Morikawa ^11, , M.Nakamura ^12, , M.Sugawara ^13, , H.Kusakari ^14, , T.Komatsubara ^15, , K.Furuno ^16,

1.中国科学院近代物理研究所,甘肃,兰州,730000

2.中国科学院近代物理研究所,甘肃,兰州,730000

3.中国科学院近代物理研究所,甘肃,兰州,730000

4.中国科学院近代物理研究所,甘肃,兰州,730000

5.Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan

6.Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan

7.Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan

8.Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan

9.Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan

10.Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan

11.Department of Physics, Kyushu University, Fukuoka 812-81, Japan

12.Department of Physics, Kyushu University, Fukuoka 812-81, Japan

13.Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan

14.Chiba University, Inage-ku, Chiba 263-8512, Japan

15.Institute of Physics and Tandem Accelerator Center, University of Tsukuba, Ibaraki 305-0006, Japan

16.Institute of Physics and Tandem Accelerator Center, University of Tsukuba, Ibaraki 305-0006, Japan

基金项目: 国家重点基础研究发展计划(973计划)(G2000077400) 中国科学院科研项目国家自然科学基金(10025525,10375077,10221003)

关键词：在束γ谱学 , 双奇核172Re , 转动带 , 旋称反转

Experimental Study of High-spin States in Odd-odd 172Re

利用149Sm(27Al, 4nγ)172Re反应布居了形变双奇核172Re的高自旋态, 用12套带有BGO反康普顿抑制的高纯锗探测器阵列进行了在束γ实验测量, 首次建立了172Re由3个转动带构成的高自旋态能级纲图. 研究和讨论了3个转动带的结构特征, 基于已有的高自旋态核结构知识并通过系统学比较和分析指出它们的准粒子组态分别为πh11/2(○)νi13/2,πh9/2 (○)νi13/2和(○)π1/2-[541](○)ν1/2-[521]. 发现前两个转动带在自旋小于18时其转动能级呈现反常的旋称劈裂.

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