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1+3准粒子-核心振动耦合模型对11Be的应用

高丽丽1,2, 曾国模1   

  1. (1. 吉林大学 物理学院, 长春130021; 2. 北华大学 师范理学院物理系, 吉林省 吉林 132013)
  • 收稿日期:2005-03-15 修回日期:1900-01-01 出版日期:2005-11-26 发布日期:2005-11-26
  • 通讯作者: 曾国模

Application of 1+3 Quasiparticle-vibration Coupling Model to 11Be

GAO Li-li1,2, ZENG Guo-mo1   

  1. (1. College of Physics, Jilin University, Changchun 130021, China; 2. Department of Physics, College of Normal Science, Beihua University, Jilin 132013, Jilin Province, China)
  • Received:2005-03-15 Revised:1900-01-01 Online:2005-11-26 Published:2005-11-26
  • Contact: ZENG Guo-mo

摘要: 利用1+3准粒子-核心四极振动耦合模型研究了11Be核的能级结构, 再现了其他模型在4 MeV处缺失的能级, 理论结果与实验符合较好. 计算结果表明, 11Be的低激发谱一些能级是1+3准粒子运动与核心8Be的表面集体振动相耦合的结果. 11Be的中子晕结构也得到合理的解释.

关键词: 1+3准粒子-核心四极振动耦合模型, 3准粒子激发, 表面集体振动

Abstract: The low-lying excitation spectra of 11Be was calculated on the basis of 1+3 quasiparticle-vibration coupling model.Experimentally observed 4 MeV excited state of 11Be has been reprouduced, and the results are in good agreement with experiments. The calculation result shows that some of the low-lying excited levels of 11Be are caused by coupling of 1+3 quasiparticles with even-even vibrating core 8Be. The halo structure of 11Be is also explained reasonably.

Key words: 1+3 quasiparticle-vibration coupling model, 3 quasiparticle excitation, surface collective vibration

中图分类号: 

  • O571