^（171）Lu1／2~－［541］轨道的形变驱动作用  

The Deformation-Driving Character of the 1/2￣-[541] Orbit in ￣(171)Lu

作　　者：马英君[1] 郑华[1] 孙慧斌 杨洪庭 周善贵 丁有贵 霍俊德[1] 刘运祚[1] 刘祥安[1] 温书贤[1] 杨春祥 

机构地区：[1]吉林大学物理系,中国原子能科学研究院

出　　处：《高能物理与核物理》1996年第10期865-869,共5页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金

摘　　要：通过熔合蒸发反应１６０Ｇｄ（１９Ｆ，６ｎ２ｐ）对１７１Ｌｕ的１／２－［５４１］转动带进行了研究，观测到了此带的第一带交叉频率．与相邻偶偶核相比该频率值推迟了约４０ｋｅＶ．推转壳模型对单准质子的顺排角动量和能量的计算结果表明πｈ９／２［５４１］１／２－轨道的形变驱动作用对这种推迟的贡献是不应被忽略的．The 1/2-[541] band in 171Lu is extended up to neutron crossing by using heavy-ion induced reaction 160Gd(19F, 6n2p) at a bombarding energy of 92MeV.It shows delayed neutron crossing frequency in comparison with the even-even neighbors.Calculations based on cranked shell model suggest that the role played by the deformation-drving effect of the πh9/2[541]1/2- orbit shouldn't be ignored in the delay of the bandcrossng in 171Lu.

关 键 词：形变驱动 反常带交叉频率 高自旋态 

分 类 号：O571.211[理学—粒子物理与原子核物理]