Coulomb effects on the formation of proton halo nuclei  

作　　者：梁玉洁 李岩松 朱民 刘祖华 周宏余 

机构地区：[1]The Key Laboratory of Beam Technology and Material Modification of Ministry of Education,College of Nuclear Science and Technology,Beijing Normal University [2]Department of Physics,Tsinghua University [3]College of Science,Minzu University of China [4]China Institute of Atomic Energy

出　　处：《Chinese Physics B》2009年第12期5267-5271,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No 10435020);the Science Foundation of the Beijing Education Committee (Grant No XK100270454)

摘　　要：This paper makes some qualitative and quantitative analyses about halo formation rules of some mirror nuclei with the relativistic mean-field （RMF） theory and the Woods Saxon mean-field model. By analysing two opposite effects of Coulomb interaction on the proton halo formation, it finds that the energy level shift has a larger contribution than that of the Coulomb barrier when the mass number A is small, the hindrance of the Coulomb barrier becomes more obvious with the increase of the mass number A, and the overall effect of the Coulomb interaction almost disappears when A ≈ 39 as its two effects counteract with each other.This paper makes some qualitative and quantitative analyses about halo formation rules of some mirror nuclei with the relativistic mean-field （RMF） theory and the Woods Saxon mean-field model. By analysing two opposite effects of Coulomb interaction on the proton halo formation, it finds that the energy level shift has a larger contribution than that of the Coulomb barrier when the mass number A is small, the hindrance of the Coulomb barrier becomes more obvious with the increase of the mass number A, and the overall effect of the Coulomb interaction almost disappears when A ≈ 39 as its two effects counteract with each other.

关 键 词：Coulomb effects halo nuclei relativistic mean-field theory Woods-Saxon mean-field model 

分 类 号：O572.24[理学—粒子物理与原子核物理]