【作者】 周小红； 张玉虎； 宋立涛； 郑勇； 徐岩冰；

【Author】 ZHOU Xiao-hong, ZHANG Yu-hu, SONG Li-tiao, ZHENG Yong, XU Yan-bing (Institute of Modern Physics, Chinese Academy of Sciences , Lanzhou 730000, China)

【机构】 中国科学院近代物理研究所；

【摘要】 利用在束核谱学实验技术,建立了169Re基于9／2-[514]组态的强耦合转动带．该带在已知的奇A Re核中具有最大的低自旋旋称劈列．对于奇A Re中的9／2-[514]转动带,研究了它们的能量旋称劈列和 M1跃迁矩阵元相对旋称劈列与核形状偏离轴对称的关系,揭示了非常缺中子的奇A Re核具有相当的负三轴形变．更多还原

【Abstract】 High-spin states in 169Re were studied and resulted in the identification of a strongly coupled band based on the 9/2" [514] Nilsson state. The 9/2- [514] band in 169Re shows the largest signature splitting at low spin among the known odd mass Re isotopes. For the 9/2- [514] bands in light odd-A Re isotopes, the signature splitting of the Routhians and its relation with the signature dependence of Ml transition matrix elements are investigated in connection with the deviation of nuclear shape from axial symmetry, suggesting an appreciable negative 7 deformation at low spin for the very neutron-deficient odd-A Re isotopes.更多还原