一种新方案描述^(182)W核的结构和性质

The structure and property of ^(182)W nucleus in the Interacting Boson Model with a new scheme

在相互作用玻色子模型中引入了一种新方案即O(6)高阶项来系统研究转动核182 W的能级和电四极跃迁性质,并和传统方案及实验结果进行了对比分析,结果表明新方案也可以描述转动核182 W的结构和性质.研究发现,新方案不但对基带的高激发能级和β带的描述比传统方案更为合理,也可以更合理地描述电四极带间跃迁过程,而传统方案下带间跃迁是禁戒的.

The structure and property of 182 W nucleus will be investigated in the Interacting Boson Model with a new scheme of O（6） higher‐order term .The energy levels and B（E2） transition values are calculated with two different schemes of SU （3） quadrupole‐quadrupole interaction and O（6） cubic interaction for describing the rotational 182 W nucleus ,also compared with the experimental data .The results show that the new scheme can also describe the experimental low‐lying spectrum reasonably , especially the higher levels of ground band and βband .The results also show that both schemes can describe the experimental intraband B（E2） transitions .However ,for interband transitions ,the re‐sults from O （6） cubic interaction are better than those from SU （3） quadrupole‐quadrupole interac‐tion w hich is fully forbidden .