Systematic research on the ground state properties of medium-mass neutron-rich nuclei

作     者：Chen He Xue-Neng Cao Xian-Xian Zhou 何晨;曹雪能;周鲜鲜

作者机构：Department of Mathematics and PhysicsBengbu Medical UniversityBengbu 233030China School of Management Science and EngineeringAnhui University of Finance and EconomicsBengbu 233030China 

出 版 物：《Chinese Physics C》 (中国物理C(英文版))

年 卷 期：2025年第49卷第3期

页      面：72-84页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China(12205001,11935001) the Scientific Research Program of Anhui University of Finance and Economics(ACKYC22080,ACKYC220801) 

主　　题：resonant states complex momentum representation halo 

摘      要：The recently developed relativistic-mean-field in complex momentum representation with the functional NL3^(*)was used to explore the exotic properties of neutron-rich Pd,Cd,Te,and Xe *** results were compared with those obtained using the relativistic Hartree-Bogoliubov(RHB)calculations and available experimental *** single-particle levels were obtained for the bound and resonant *** two neutron separation energies and root mean square(rms)radii agree with the experimental *** is shown that there is a halo structure in extremely neutron-rich^(164-180)Te and^(164-182))Xe,,as well as a thick neutron skin in extremely neutron-rich Pd and Cd *** the numbers of neutrons(N_(λ))Te and(N_(0)),occupying the levels above the Fermi surface and zero-potential energy level,it was found that pairing correlations play an important role in the formation of halo *** findings are further supported by investigating S_(2n),rms radii,occupation probabilities,contributions of single-particle levels to the neutron rms radii,and density *** neutron rms radii increased sharply,evidently deviating from the traditional rule r■N^(1/3),and the density distributions were very ***,the contributions of different single-particle levels to the total neutron density and wavefunction are *** was found that the sudden increase in the neutron rms radii and diffuse density distributions mainly arise from the resonant levels with a lower orbital angular momentum near the continuum threshold.