Coulomb effects on the formation of proton halo nuclei |
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Authors: | Liang Yu-Jie Li Yan-Song Zhu Min Liu Zu-Hua and Zhou Hong-Yu |
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Affiliation: | The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China; Department of Physics, Tsinghua University, Beijing 100084, China; College of Science, Minzu University of China, Beijing 100081, China; China Institute of Atomic Energy, Beijing 102413, China |
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Abstract: | 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. |
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Keywords: | Coulomb effects halo nuclei relativistic mean-field
theory Woods--Saxon mean-field model |
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