Odd-even mass staggering with Skyrme-Hartree-Fock-Bogoliubov theory
W. J. Chen, C. A. Bertulani, F. R. Xu, Y. N. Zhang
TL;DR
This paper investigates odd-even nuclear mass staggering using Skyrme-Hartree-Fock-Bogoliubov theory, optimizing pairing interaction strengths to better match empirical data across Sn isotopes.
Contribution
It introduces an improved method for determining pairing interaction strengths that enhances the accuracy of odd-even mass difference predictions.
Findings
Optimized pairing strengths better reproduce empirical mass differences.
The method outperforms previous fits based on neutron pairing gaps.
Enhanced description of odd-even staggering in Sn isotopes.
Abstract
We have studied odd-even nuclear mass staggering with the Skyrme-Hartree-Fock-Bogoliubov theory by employing isoscalar and isovector contact pairing interactions. By reproducing the empirical odd-even mass differences of the Sn isotopic chain, the strengths of pairing interactions are determined. The optimal strengths adjusted in this work can give better description of odd-even mass differences than that fitted by reproducing the experimental neutron pairing gap of Sn.
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