| 稳定核~（193）Ir的高自旋态 |
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| 引用本文： | 李仕成,方永得,石跃,张玉虎,周小红,柳敏良,王建国,郭应祥,马飞,方芳,王思成,高丙水,李广顺,丁兵,张宁涛,王志刚,何龙,颜鑫亮,吴晓光,贺创业,郑云,王治民,许甫荣.稳定核~（193）Ir的高自旋态[J].中国科学:物理学 力学 天文学,2012(1):32-41. |
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| 作者姓名： | 李仕成 方永得 石跃 张玉虎 周小红 柳敏良 王建国 郭应祥 马飞 方芳 王思成 高丙水 李广顺 丁兵 张宁涛 王志刚 何龙 颜鑫亮 吴晓光 贺创业 郑云 王治民 许甫荣 |
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| 作者单位： | [1]中国科学院近代物理研究所,兰州730000 [2]中国科学院研究生院,北京100049 [3]北京大学物理学院,核物理与核技术国家重点实验室,北京100871 [4]中国原子能科学研究院,北京102413 |
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| 基金项目： | 国家自然科学基金（批准号：10905075,10825522,10735010,10975006）; 国家重点基础研究发展计划（编号：2007CB815005）; 中国科学院基金资助项目致谢作者衷心感谢中国原子能科学研究院工作人员提供^7Li束流及实验期间提供的各种帮助. |
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| 摘 要： | 利用非完全熔合反应192Os（7Li,α2n）布居了稳定核193Ir的高自旋态.基于标准在束γ谱学实验测量结果,扩展了193Ir核原有的能级纲图,并首次观测到了建立在πh11/2组态上的转动带能级结构.根据邻近奇A核已有的高自旋态核结构知识,通过系统学比较和分析,建议了193Ir核的3-准粒子组态.实验发现187-193Ir核πh11/2转动带的旋称劈裂随着中子数的增加而逐渐增大.利用Total-Routhian-Surface理论计算,可以定性地解释这种变化规律.
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| 关 键 词： | 非完全熔合反应 高自旋态 旋称劈裂 |
High-spin states in the stable nucleus ^193Ir |
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| LI ShiCheng,FANG YongDe,SHI Yue,ZHANG YuHu,＊,ZHOU XiaoHong,LIU MinLiang,WANG JianGuo,GUO YingXiang,MA Fei,FANG Fang,WANG SiCheng,GAO BingShui,LI GuangShun,DING Bing,ZHANG NingTao,WANG ZhiGang,HE Long,YAN XinLiang,WU XiaoGuang,HE ChuangYe,ZHENG Yun,WANG ZhiMin,＆XU FuRong.High-spin states in the stable nucleus ^193Ir[J].Scientia Sinica Pysica,Mechanica & Astronomica,2012(1):32-41. |
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| Authors: | LI ShiCheng FANG YongDe SHI Yue ZHANG YuHu ＊ ZHOU XiaoHong LIU MinLiang WANG JianGuo GUO YingXiang MA Fei FANG Fang WANG SiCheng GAO BingShui LI GuangShun DING Bing ZHANG NingTao WANG ZhiGang HE Long YAN XinLiang WU XiaoGuang HE ChuangYe ZHENG Yun WANG ZhiMin ＆XU FuRong |
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| Institution: | 1 Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;2 Graduate School of Chinese Academy of Sciences,Beijing 100049,China;3 School of Physics,and State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,China;4China Institute of Atomic Energy,Beijing 102413,China |
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| Abstract: | The incomplete fusion reaction 192Os（7Li,α2n）has been used to populate high-spin states in the heavy stable nucleus 193Ir at a beam energy of 44 MeV.A level scheme built on the 11/2-isomer has been extended to high-spin states with newly observed γ transitions.Three-quasiparticle states are suggested in 193Ir,according to level spacing and excitation energy systematics as well as the existing knowledge of neighboring odd-mass nuclei.The features of signature splitting in the πh11/2 bands of 187-193Ir are discussed qualitatively with the help of Total-Routhian-Surface calculations. |
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| Keywords: | incomplete fusion reaction high-spin states signature splitting |
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