Static properties ofΛ-hypernuclei are calculated self-consistently in the relativistic mean-field model.The effect ofΛon the core nucleons are investigated.It is found that the rms radii of neutron become smaller th...Static properties ofΛ-hypernuclei are calculated self-consistently in the relativistic mean-field model.The effect ofΛon the core nucleons are investigated.It is found that the rms radii of neutron become smaller than those of ordinary nuclei,when a closed-shell nuclear core is embeded in a 1s_(1/2) Λhyperon is added.展开更多
The importance of the unique-parity single particle level in the description of nuclear collectivity is stressed in the framework of the nucleon-pair shell model truncated to the SD subspace.It is found that with the ...The importance of the unique-parity single particle level in the description of nuclear collectivity is stressed in the framework of the nucleon-pair shell model truncated to the SD subspace.It is found that with the shell model Hamiltonian which includes the single particle energy term,the unique-parity single particle level has to be included for describing the low-lying collective states reasonably.展开更多
The excitation spectra for(12■_Be)and(1■6_C)are obtained in the frame of a shell model.The experimental values of the ground state binding energies of the■-hyperon in(12■_Be)and(1■6_C)are used to determine the we...The excitation spectra for(12■_Be)and(1■6_C)are obtained in the frame of a shell model.The experimental values of the ground state binding energies of the■-hyperon in(12■_Be)and(1■6_C)are used to determine the well depth of the■-nucleus potential.The information on the residual interaction is emphasized.It is found that the residual interaction does not have much effect on the spectra of the■--hypernucleus.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.19875026the Doctoral Programme Foundation of Education Ministry of China under Grant No.97005518.
文摘Static properties ofΛ-hypernuclei are calculated self-consistently in the relativistic mean-field model.The effect ofΛon the core nucleons are investigated.It is found that the rms radii of neutron become smaller than those of ordinary nuclei,when a closed-shell nuclear core is embeded in a 1s_(1/2) Λhyperon is added.
基金Supported in part by the National Natural Science Foundation of China under Grant No.19875026the Foundation of State Education Commission of China under Grant No.97005518.
文摘The importance of the unique-parity single particle level in the description of nuclear collectivity is stressed in the framework of the nucleon-pair shell model truncated to the SD subspace.It is found that with the shell model Hamiltonian which includes the single particle energy term,the unique-parity single particle level has to be included for describing the low-lying collective states reasonably.
基金Supported by the National Natural Science Foundation of China under Grant No.19875026,and the Doctoral Foundation of the Education Commission of China under Grant No.97005518。
文摘The excitation spectra for(12■_Be)and(1■6_C)are obtained in the frame of a shell model.The experimental values of the ground state binding energies of the■-hyperon in(12■_Be)and(1■6_C)are used to determine the well depth of the■-nucleus potential.The information on the residual interaction is emphasized.It is found that the residual interaction does not have much effect on the spectra of the■--hypernucleus.
