^(104-110)Pd核的集体激发

Collective Excitations of the ^(104-110)Pd Nuclei

以Dyson玻色子展开理论为基础建立的相互作用玻色子模型微观理论方案,已推广到有g玻色子自由度的情况。本文用它研究^(104-110)Pd同位素链,对应的sdg模型哈密顿量是从壳模型输入量算出的,其中的系数与从唯象符合给出的数据作了比较,上述哈密顿量也用来计算了本征谱,理论值与实验资料符合得很好。

A microscopic approach of the interacting boson model, which is based on the Dyson expansion theory, has been extended to the case of including the g b0son degree of freedom. The approach is applied to the isotopic chain of ^(104-110)Pd in the present paper. The sdg model Hamiltonians for these isotopes are calculated from the shell model input. The resulting coefficients in the Hamiltonians are compared to the corresponding values obtained by phenomenological fit. The Hamiltonians are also used to generate energy spectra. Good agreement is obtained in comparison with experimental data.