Neutron skin thickness of 90 Zr and symmetry energy constrained by charge exchange spin-dipole excitations*
Abstract The charge exchange spin-dipole (SD) excitations of <?CDATA $ ^{90} $?> 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 distribut...
Published in: | Chinese Physics C |
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Main Authors: | , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
IOP Publishing
2023
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Subjects: | |
Online Access: | http://dx.doi.org/10.1088/1674-1137/aca38e https://iopscience.iop.org/article/10.1088/1674-1137/aca38e https://iopscience.iop.org/article/10.1088/1674-1137/aca38e/pdf |
Summary: | Abstract The charge exchange spin-dipole (SD) excitations of <?CDATA $ ^{90} $?> 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 <?CDATA $ ^{90} $?> Zr( p , n ) <?CDATA $ ^{90} $?> Nb and <?CDATA $ ^{90} $?> Zr( n , p ) <?CDATA $ ^{90} $?> Y is used to deduce the neutron skin thickness. The neutron skin thickness <?CDATA $ \Delta r_{np} $?> of <?CDATA $ ^{90} $?> Zr is extracted as <?CDATA $ 0.083\pm0.032 $?> fm, which is similar to the results of other studies. Based on the correlation analysis of the neutron skin thickness <?CDATA $ \Delta r_{np} $?> and the nuclear symmetry energy J as well as its slope parameter L , a constraint from the extracted <?CDATA $ \Delta r_{np} $?> leads to the limitation of J to <?CDATA $ 29.2 \pm 2.6 $?> MeV and L to <?CDATA $ 53.3 \pm 28.2 $?> MeV. |
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