Study On Structural Properties Of Strange Nuclei In Fp Shell Based On Large-scale Shell Model Calculation

Recently,the introduction of large scientific devices in China has promoted the rapid development of experimental technology and provided a large amount of experimental data for theoretical research.The study of the nuclear structure has always been an important research direction of nuclear physics.The main work in this paper includes the following two contents: the first is the structural properties of neutron-rich calcium isotopes in the large-scale shell model calculation;the second is systematic study of coulomb displacement energy based on coulomb energy empirical formula and mass model.We studied the structure of neutron-rich calcium isotopes in the large-scale shell model calculations with realistic effective interactions.As the CD-Bonn interaction and Kuo-Brown interaction do not include three-body forces,their direct use leads poor calculation results.So we tried to adjust the single-particle energy(SPEs),and whether this method can empirically reflect three-body correlations.The results show that the CD-Bonn interaction adjusted for the single-particle energy can fit the experimental date of the spectrum and energy well.The KB interaction needs to be adjusted not only for SPEs but also for monopole terms.Therefore,the influence of monopole terms on modern realistic interactions which include perturbations up to the third order becomes weaker.We also calculated the effect of non-central forces on the shell structure and found that the tensor force effect of the CD-Bonn interaction is weaker than the KB interaction.We studied the coulomb displacement energy of coulomb energy empirical formula and mass model systematically.On the basis of the simplest Coulomb energy empirical equation of the droplet model,we add some different correction terms:Coulomb exchange terms,correlation correction,shell correction,etc.These make the calculated the Coulomb energy more accurately and fit to experimental date.Then,we research the binding energies of some usual mass models,and obtain their Coulomb displacement energies.The results show that there are systematic discrepanciesbetween the theoretical results and experimental data of the coulomb displacement energy,and the discrepancies are related to the isospin breaking terms.And it is found that the results of microscopic theories have obvious systematic behavior,which may be improved by introducing isospin breaking terms.However,the systemic behavior of phenomenological model is not obvious,and it may be that the model parameters can not contain micro-structure information.