| 过渡区核87Zr的高自旋态研究 |
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| 引用本文： | 赵广义,李广生,吴晓光,刘祥安,温书贤,陆景斌,袁观俊,杨春祥.过渡区核87Zr的高自旋态研究[J].中国物理 C,2000,24(3):213-219. |
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| 作者姓名： | 赵广义 李广生 吴晓光 刘祥安 温书贤 陆景斌 袁观俊 杨春祥 |
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| 作者单位： | [1]中国原子能科学研究院,北京 [2]吉林大学物理系,长春 |
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| 基金项目： | 中国科学院资助项目，19675056， |
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| 摘 要： | 通过束流能量为118MeV的59Co(32S,3pn)87Zr熔合蒸发反应,用在束r谱学方法研究了87Zr的高自旋态.利用7台反康普顿谱仪组成的探测阵列进行r–r符合测量,并确定部分r射线的DCO值,在此基础上建立了自旋直到(37/2+)和(43/2－)的能级纲图.观测到了多条新的能级.与相邻的同中子异荷素的比较表明,中子对核结构性质的影响远大于质子的贡献.随着质子数的增加,第一交叉频率呈减小的趋势.
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| 关 键 词： | 高自旋态 在束γ谱学 能级纲图 |
| 收稿时间： | 1998-12-30 |
Study of High Spin States in Transitional Nucleus 87Zr |
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| ZHAO GuangYi,LI GuangSheng,WU Xiao Guang,LIU XiangAn,WEN ShuXian,LU JingBin,YUAN GuanJun,YANG ChunXiang.Study of High Spin States in Transitional Nucleus 87Zr[J].High Energy Physics and Nuclear Physics,2000,24(3):213-219. |
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| Authors: | ZHAO GuangYi LI GuangSheng WU Xiao Guang LIU XiangAn WEN ShuXian LU JingBin YUAN GuanJun YANG ChunXiang |
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| Abstract: | High spin states in ~(87) Zr was studied through the fusion evaporation reaction ~(59)Co(~(32)S, 3pn)~(87) Zr at a beam energy of 118 MeV using in-beam r-my spectroscopic method.r-r coincidence measurement was performed by using an array consisting of seven antiCompton spectrometers, and DCO ratios of some r rays were determined. The level scheme of ~87Zr wasestablished up to spin (37/2~ ) and (43/2~- ). Many previously unknown states have been observed. Comparison with neighboring isotones indicates that effect of neutron on nuclear structure property is predominant compared to proton, and there is a tendency of reduction in band crossing frequency with increasing proton number. |
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