| 139Pm核中磁转动带的研究 |
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| 引用本文： | 张宁涛,张玉虎,周小红,柳敏良,郑勇,郭应祥,雷祥国,丁兵,胡钧,马飞,陈亮,王世陶,吴晓光,郑云. 139Pm核中磁转动带的研究[J]. 原子核物理评论, 2012, 29(1): 45-51. DOI: 10.11804/NuclPhysRev.29.01.045 |
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| 作者姓名： | 张宁涛 张玉虎 周小红 柳敏良 郑勇 郭应祥 雷祥国 丁兵 胡钧 马飞 陈亮 王世陶 吴晓光 郑云 |
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| 作者单位： | 中国科学院近代物理研究所, 甘肃 兰州 730000; |
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| 基金项目： | 国家重点基础研究发展计划项目(2007CB815005);国家自然科学基金资助项目(10825522,10735010,10775158)~~ |
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| 摘 要： | 通过重离子熔合蒸发反应116Cd(27Al， 4n)布居了139Pm的高自旋激发态，用12台高纯锗探测器（HpGe）阵列进行了在束γ-γ 符合测量。 基于γ-γ符合关系及139Pm核已知的能级信息，建立了两条ΔI=1的负宇称带。 利用相邻核能级结构的系统性和依据半经典的核子-核子有效作用的理论模型（SPAC）对这两条带能级结构进行了定量计算， 认为它们属于磁转动带。 High spin states in 139Pm have been studied via the116Cd(27Al， 4n) heavy ion fusion evaporation reaction. The γ-γ coincidences were measured with 12 HpGe detectors. Based on γ-γ coincidence relationships and previously known levels in 139Pm， two ΔI＝1 negative parity bands have been established. From the systematic comparison with the neighbouring nuclei and semi classical effective interaction model (SPAC) calculations， the two bands were suggested as magnetic rotational bands.
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| 关 键 词： | 在束γ谱学 扁椭形变 磁转动 集体转动 |
| 收稿时间： | 1900-01-01 |
Study of Magnetic Rotational Bands in 139Pm Nucleus |
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| ZHANG Ning-tao,ZHANG Yu-hu,ZHOU Xiao-hong,LIU Min-liang,ZHENG Yong,GUO Ying-xiang,LEI Xiang-guo,DING Bin,HU Jun,MA Fei,CHEN Liang,WANG Shi-yao,WU Xiao-guang,ZHENG Yun. Study of Magnetic Rotational Bands in 139Pm Nucleus[J]. Nuclear Physics Review, 2012, 29(1): 45-51. DOI: 10.11804/NuclPhysRev.29.01.045 |
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| Authors: | ZHANG Ning-tao ZHANG Yu-hu ZHOU Xiao-hong LIU Min-liang ZHENG Yong GUO Ying-xiang LEI Xiang-guo DING Bin HU Jun MA Fei CHEN Liang WANG Shi-yao WU Xiao-guang ZHENG Yun |
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| Affiliation: | Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China; |
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| Abstract: | High-spin states in 139Pm have been studied via the 116Cd(27Al,4n) heavy-ion fusion-evaporation reaction.The γ-γ coincidences were measured with 12 HpGe detectors.Based on γ-γ coincidence relationships and previously known levels in 139Pm,two ΔI=1 negative-parity bands have been established.From the systematic comparison with the neighbouring nuclei and semi-classical effective interaction model(SPAC) calculations,the two bands were suggested as magnetic rotational bands. |
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| Keywords: | in-beam γ spectroscopy oblate shape magnetic rotation collective rotation |
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