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在三体模型的基础上，采用汤川作用势，进行变分计算，进一步研究了晕核１１Ｌｉ，１４Ｂｅ和１７Ｂ的基态性质，给出了晕中子密度分布的一个解析表达式．理论计算结果与最新的实验数据一致．
Based on the three-body model, using the action potential of Yukawa, the variational calculation is carried out. The ground state properties of 11Li, 14Be and 17B are further studied. An analytical expression of halo neutron density distribution is given. The theoretical calculation results are consistent with the latest experimental data.