Wigner energy and nuclear mass relations

Y. Y. Cheng, M. Bao, Y. M. Zhao, and A. Arima
Phys. Rev. C 91, 024313 – Published 17 February 2015

Abstract

In this paper we construct an approach to extract the Wigner energy [Bw(N,Z)=W(A)|NZ|d(A)δN,Zπnp] by using local mass relations, in the first-order approximation. We obtain W(A)=(42.7±1.2)/A MeV, d(A)=(28.7±1.5)/A MeV. By using the Wigner energies such obtained as well as empirical pairing and symmetry energies, the resultant binding-energy difference between the lowest T=0 and T=1 states of odd-odd N=Z nuclei is in good agreement with experimental data.

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  • Received 15 December 2014

DOI:https://doi.org/10.1103/PhysRevC.91.024313

©2015 American Physical Society

Authors & Affiliations

Y. Y. Cheng1, M. Bao1, Y. M. Zhao1,2,*, and A. Arima1,3

  • 1Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
  • 2IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China
  • 3Musashi Gakuen, 1-26-1 Toyotamakami Nerima-ku, Tokyo 176-8533, Japan

  • *Corresponding author: ymzhao@sjtu.edu.cn

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Vol. 91, Iss. 2 — February 2015

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