摘要
应用微观相互作用玻色子-费米子模型的形式体系,构造出唯象核芯+两准粒子模型的一个微观实现,微观sdIBM-2+2q.p方案.基于唯象模型和实现方案,导出原子核的一个d玻色子从退耦、拆散、占据闯入轨道,直到参加顺排所需的最小能量值;据此讨论了核高自旋态的微观结构及其拆对顺排次序.对104Cd核的计算结果显示微观方案较满意地描述了该核的低自旋态和部分高自旋态;核的一个d玻色子的突然拆对不会引起前后状态的显著改变.最后,本方案指认:这些高自旋态是构建于ν(h11/2)2和π(g9/2)2上的顺排态;而实验上观测到的81+、82+和83+态则很可能分别属于两准质子顺排态、两准中质子顺排态和基态。
With the formalism of the microscopic interacting boson-fermion model, which is a microscopic realization of the phenomenological core plus two-quasi-particle model, the microscopic sdIBM-2+2q.p. model approach, has been formed. Based on this phenomenological model and the microscopic realization, the aligned minimum energy that it is necessary to a d-boson in the nucleus has been deduced which occurs in the process from the decoupling, broken up, occupying the intruder orbits, and passing into the alignment.The microstructure in high-spin states and the sequence of bosons broken pair is discussed. The calculated results for ^(104)Cd nucleusshow this approach is used successfully to describe the low-spin and partial high-spin states on that nucleus. When the broken pair of a boson takes place suddenly, no significant change of states between foremost state and latter state is caused by the broken pain. Finally, this approach identifies that those high-spin states are the states built on the ν(h_(11/2))^(2)and π(g_(9/2))^(2)aligned states. And the 8_(1+ )、8_(2+ )and^( )8_(3+)states in the experiment belong to two-quasi-proton aligned, two-quasi-neutron aligned, and ground states band, respectively.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第11期141-144,共4页
Journal of Chongqing University
基金
贵州省科技基金资助(黔基合计字[2002]305)
