Neutron skin thickness of 90Zr and symmetry energy constrained by charge exchange spin-dipole excitations*

Author:

Cheng Shi-Hui,Wen Jing,Cao Li-Gang,Zhang Feng-Shou

Abstract

Abstract The charge exchange spin-dipole (SD) excitations of Zr are studied using the Skyrme Hartee-Fock plus proton-neutron random phase approximation with SAMi-J interactions. The experimental value of the model-independent sum rule obtained from the SD strength distributions of Zr(p, n) Nb and Zr(n, p) Y is used to deduce the neutron skin thickness. The neutron skin thickness of Zr is extracted as fm, which is similar to the results of other studies. Based on the correlation analysis of the neutron skin thickness and the nuclear symmetry energy J as well as its slope parameter L, a constraint from the extracted leads to the limitation of J to MeV and L to MeV.

Funder

National Natural Science Foundation of China

Fundamental Research Funds for the Central Universities

Publisher

IOP Publishing

Subject

Astronomy and Astrophysics,Instrumentation,Nuclear and High Energy Physics

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