【摘要】 在相互作用玻色子模型微观基础的研究方面,曾提出过以玻色子展开和修正的Jancovici-Schiff代换为基础的理论方案.本文把方案扩充到有中子、质子和质子空穴三种玻色子的情况,用它研究Sn偶同位素由质子2p-2h激发组态混入形成的准转动带.计算结果与实验能谱作了比较并讨论了组态混合的一些特性.更多还原

【Abstract】 Based on the boson expansion and the so-calkd Jancovici-Schiff substitution, and approach has been developed to study the microscopic foundation of the interacting boson model. In this work an extension of theapproach is made, thus one is able to treat the excitations of such system in which several neutron bosons, a proton boson and a proton-hole boson exist. With the consideration of the proton two-particle twohole excitation configurations we have studied the intruder quasi-rotational bands in double-even Sn nuclei. The Calculated results are compared with experiment and some features of the configuration mixture are discussed.更多还原