摘要
通过测量252Cf自发裂变所产生的瞬发γ射线,对146Ce核的高自旋结构进行了重新研究,结果更新了以前报道的能级纲图,把八级形变集体带扩展到更高的自旋,并且重新构建了可能的准γ带结构．此外,用反射不对称壳模型(RASM)对146Ce核的八级形变带进行了计算,低自旋处的计算结果与实验数据符合得很好．
High-spin structures in ^146Ce nucleus have been re-investigated by measuring the prompt γ rays from spontaneous fission of ^252Cf. The previously reported level scheme of 146Ce has been updated. The octupole deformed collective bands have been extended up to higher spin states, A possible quasi-γ band structure was examined and reconstructed according to our data analysis. In addition, the reflection asymmetric shell model was applied to describe the octupole deformed bands in ^146Ce, and the calculated results are in good agreement with the experimental data at lower spins.
出处
《高能物理与核物理》
EI
CSCD
北大核心
2006年第8期740-744,共5页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金(10575057,10375032)教育部博士点基金项目(20030003090)资助~~
关键词
高自旋态
八级形变带
准γ带
壳模型
high spin state, octupole deformed band, quasi-γ band, shell model
