Theoretical Study Of The Proton-rich Nuclei Giant Dipole Resonance

In this paper,the theoretical framework of Skyrme Hartree-Fock?SHF?and random phase approximation?RPA?is used to systematically study the properties of the proton-rich nuclear giant dipole resonance,which enriches compared to the neutron-rich giant dipole resonance There are fewer studies on proton-rich nuclear dipole resonances.In the calculation of the ground state and excited state properties of proton-rich nuclei,the classical nucleon-nucleon interaction Skyrme interaction is used in this paper.The interaction parameter used in this paper is Sly5.First,the ground state properties and excited state properties of Ar,Ca,and element-rich proton isotopes were calculated.A small peak was found at a position less than 10 MeV on the response function image.This paper considers that the proton and the core are mutually The soft mode dipole resonance caused by motion is discussed in this paper by using the QPRA method by calculating the transition amplitude.It is found that it is more inclined to single particle resonance rather than collective resonance like giant resonance.In order to further study this,the rich proton isotopes of Fe and Ni are studied.Compared with the isotopes of Ar and Ca,the proton and neutron difference of Fe and Ni isotopes is smaller.However,the same soft-mode dipole resonance as in the Ca and Ar response functions was found.And it is analyzed and calculated in the article.The study of isospin vector giant dipole resonance also calculated the N=20-rich proton nuclei data,because the calculated proton-neutron difference of the element is smaller than the previously calculated element,so the soft mode resonance found The energy region is closer to the giant resonance.However,the short resonances of these elements calculated by the analysis of QRPA also tend to be single particle resonances.In addition to the study of the proton-rich nuclear isospin vector giant dipole resonance,this paper also analyzes the effect of the symmetry energy on the nuclear isospin vector giant dipole resonance,because the nuclear matter symmetry energy has a density dependence.A series of Skyrme interactions.The symmetry energies of these interactions have different density-dependent behaviors,thereby analyzing the effect of symmetric energy on giant dipole resonance.It has been found in research that the thickness of proton skins for proton-rich elements³⁰Ar is related to their dipole distribution in the low resonance region,but the dipole polarizability is more sensitive to it,and through the density-dependent behavior of symmetrical energy,Dipole resonance is linked.