Global systematics of the Wigner energy
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Abstract: (Elsevier)
Following Zeldes, double-beta decay Q values are used as a filter for extracting symmetry energy and Wigner energy coefficients across the full range of nuclei, from A=10 to A=246 . The symmetry coefficient extracted is found to vary smoothly with A and mass formula coefficients can be determined for the corresponding symmetry and surface symmetry terms. However, the extracted Wigner coefficient has large standard errors and fluctuates dramatically with A , even as regards its sign. Shell corrections remove most of the fluctuations and allow the determination of a reliable Wigner coefficient for the mass formula.- 21.10.Dr
- 21.65.Ef
- 21.10.-k
- Wigner energy
- Symmetry energy
- Mass formula
- Binding energy
- energy: symmetry
- mass formula
- nucleus: binding energy
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