偶偶核结构相变的微观相互作用玻色子模型方案的分类与特征  

Class andproperties of structures in even-even nuclei by microscopic IBM approach

作　　者：汪红[1] 石筑一[1] 童红[1] 杨亚碧[1] 

机构地区：[1]贵州民族大学理学院,贵阳550025

出　　处：《四川大学学报（自然科学版）》2012年第5期1060-1066,共7页Journal of Sichuan University(Natural Science Edition)

基　　金：贵州省科学技术基金项目(黔科合J字LKM[201i]22号)

摘　　要：本文基于相互作用玻色子模型的微观方案,探讨了从自由价核子到构建出Arima哈密顿量的两次结构突变:核子配对成理想玻色子(玻色化)和理想玻色子集体化(有序化),据此将原子核相变划分为基准态重组型和玻色子破对型两类.最后,讨论了微观相互作用玻色子模型研究原子核相变的特点与不足.Based onthe microscopic Interacting Boson Model approach, we have investigated two structure changes from free nucleons to the general Arima Hamiltonians. one is that from nucleon pairs to the ideal bosons （bosons creation） and the other corresponds to the collection of those ideal bosons （ordering）, and distinguished the nuclear phase transitions into two types, basic states restoration-type and boson broken-pair-type. Finally, the advantages and shortages of the microscopic IBM approach in the investigation of nuclear phase transitions have been discussed.

关 键 词：偶偶核 微观IBM方案 原子核相变 基准态重组型相变 玻色子破对型相变 

分 类 号：O56[理学—原子与分子物理]