双奇核176Ir转动带的旋称反转

来源 :高能物理与核物理 | 被引量 : 0次 | 上传用户：DGFIDYRSTG

【摘要】

：

利用149Sm(31P,4nγ)反应,通过γ射线的激发函数测量、X-γ和γ-γ符合测量研究了双奇核176Ir的高自旋态. 首次建立了双奇核176Ir由4个转动带构成的能级纲图. 依据从实验数据

【作者】

：

张玉虎温书贤竺礼华 M.Koizumi M.Oshima

【机构】

：

中国科学院近代物理研究所,中国原子能科学研究院,Japan Atomic Energy Research Institute,Chiba Institute of Technology,Chiba U

【出处】

：

高能物理与核物理

【发表日期】

：

2004年期

【关键词】

：

在束γ谱学 176Ir的转动带旋称反转 in-beam γ-spectroscopy rotational bands in 176Ir signature

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论文部分内容阅读

利用149Sm(31P,4nγ)反应,通过γ射线的激发函数测量、X-γ和γ-γ符合测量研究了双奇核176Ir的高自旋态. 首次建立了双奇核176Ir由4个转动带构成的能级纲图. 依据从实验数据中提取出的带内B(M1)/B(E2)值与理论计算值的比较,以及相邻双奇核的带结构特征,给出了转动带的准粒子组态. 基于本实验建立起的带间跃迁和在I=18处观测到的旋称交叉,指出176Ir核基于πh9/2νi13/2和πi13/2νi13/2组态的两个转动带在低自旋时出现旋称反转现象.

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双奇核176Ir转动带的旋称反转

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