Indication of negative triaxial deformation in the very neutron-deficient odd-A Re isotopes

Indication of negative triaxial deformation in the very neutron-deficient odd-A Re isotopes
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中子极度缺乏的奇数A铼同位素中负三轴变形的迹象

DOI:
10.1088/0256-307x/20/6/313
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发表时间:
2003-06
期刊:
Chin. Phys. Lett
影响因子:
--
通讯作者:
Xu FR et al
Xu FR et al
中科院分区:
其他
文献类型:
--
作者:
Zhou XH;Xu FR et al

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对于轻奇A Re同位素中的9/2-[514]能带,结合核形状与轴对称性的偏差,研究了能量特征分裂及其与M1跃迁矩阵元素特征依赖性的关系。通过比较实验值与假设轴对称形状的理论计算之间的能量特征分裂和相对磁转变率,发现差异随着中子数的减少而增加。这些差异强烈表明非常缺乏中子的奇数A铼同位素存在明显的负γ变形。
For the 9/2-[514] bands in light odd-A Re isotopes, the energy signature splitting and its relation with the signature dependence of M1 transition matrix elements are investigated in connection with the deviation of nuclear shape from axial symmetry. By comparing the energy signature splittings and relative magnetic transition rates between the experimental values and the theoretical calculations assuming axially symmetric shapes, it is found that discrepancies increase with the decreasing neutron number. These discrepancies strongly suggest an appreciable negative γ deformation for the very neutron-deficient odd-A Re isotopes.
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