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Tensor force effect on single-proton energy levels of oxygen isotopes

Science China(Physics,Mechanics & Astronomy) 2014年第9期57卷 1662-1668页

作者： YU GuoLiang GU JianZhong WANG YanZhao LI ZhenYu MENG GaoQing Department of Mathematics and Physics North China Electric Power University China Institute of Atomic Energy Department of Mathematics and Physics Shijiazhuang TieDao University School of Physics and Electronic Science Guizhou Normal College

In the framework of the Hartree-Fock approach the proton spin-orbital splittings of the 1p orbits and the shell gaps in the oxygen isotopes are investigated with the interactions SLy5+T,SLy5+Tw,SGII+Te1,SGII+Te2,SGII+Te3 and many sets of the TIJ *** of the interactions are the skyrme interactions and contain a tensor component(tensor force).It is shown that the evolution of the single-proton levels for the oxygen isotopes is sensitive to a parameterβTwhich is associated with the tensor force strength of the skyrme *** understand this phenomenon,we systematically analyze the dependence of the spin-orbit splittings and shell gaps on the parameterβTin terms of the spin-orbit potential and the corresponding wave *** find that the skyrme interactions can be classified into two groups:(a)T21,T32,T43,T54,SLy5+T,SLy5+Tw,SGII+Te1 and SGII+Te2,which can roughly reproduce the experimental shell gaps of the oxygen isotopes;(b)T1J and SGII+Te3,which can not reproduce the experimental shell gaps.

关键词： tensor force skyrme interaction shell gaps

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Probing nucleon effective mass splitting with light particle emission

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Nuclear Science and Techniques 2023年第6期34卷 135-146页

作者： Fang-Yuan Wang Jun-Ping Yang Xiang Chen Ying Cui Yong-Jia Wang Zhi-Gang Xiao Zhu-Xia Li Ying-Xun Zhang China Institute of Atomic Energy Beijing102413China School of Science Huzhou UniversityHuzhou313000China Department of Physics Tsinghua UniversityBeijing100084China Guangxi Key Laboratory of Nuclear Physics and Technology Guangxi Normal UniversityGuilin541004China

The main objective of this study was to investigate the impact of effective mass splitting on heavy-ion-collision *** first analyzed correlations between different nuclear matter parameters obtained from 119 effective skyrme interaction *** values of the correlation coefficients illustrate that the magnitude of effective mass splitting is crucial for tight constraints on the symmetry energy via heavy-ion ***^(86)Kr+^(208)Pb system at beam energies ranging from 25 to 200A MeV was simulated within the framework of the improved quantum molecular dynamics model(ImQMD-Sky).Our calculations show that the slopes of the spectra of ln[Y(n)/Y(p)]and ln[Y(t)/Y(^(3)He)],which are the logarithms of the neutron to proton and triton to helium-3 yield ratios,are directly related to effective mass splitting and can be used to probe the effective mass splitting.

关键词： Effective mass splitting Symmetry energy Heavy-ion collisions skyrme interaction

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