壳模型下探讨^（6－11）Li核的某些异常性质

Studies of Some Exotic Properties of ￣(6-11)Li Nuclei in the Framework of Shell Model

在壳模型下探讨了６－１１Ｌｉ核的某些异常性质，特别是滴线核１１Ｌｉ奇异性质可能的微观起因．发现６Ｌｉ核基态的电四极矩敏感地依赖于相互作用力中的张量力分量，６－８Ｌｉ核第一激发态电四极约化跃迁几率增大，呈现集体性，可能是由集团结构所致，对３≤Ｚ≤５和Ｎ≈８附近核，存在可能的跨壳激发或壳隙消失现象．

The possible microscopic mechanisms of some exotic properties of 6-11Li nuclei,especially for dripline nucleus 11Li are investigated in the framework of Shell Model. The quadrupole moment of the ground state of 6Li is primarily sensitive to the tensor components of interactions. The electromagnetic transition probabilities of the first excited states of 6-8Li nuclei are extremely enhanced. The collectiveness possibly results from cluster structures. In the vicinity of 3≤Z ≤5 and N ≈8,there may exist the phenomenon of crossed-shell excitation and/or N=8 shell gap disappeariance.