ar X iv : n uc l - th / 0 50 30 06 v 1 3 M ar 2 00 5 1 An alternative understanding of mass formulas in terms of nuclear structure
نویسنده
چکیده
A typical form of mass formula is re-explained in terms of nuclear structure. For N ≈ Z nuclei, we propose to start with the shell model picture and to consider the T = 0 2n − 2p (α-like) correlations in the first place, instead of the symmetry energy as a prior concept. Afterward, the symmetry energy is described on the basis of the α-like superfluidity caused by the T = 0 2n − 2p correlations in parallel with the pairing energy on the basis of the pairing superfluidity. This re-explanation gives useful insights for understanding the nuclear mass formula. The origin of the Wigner energy is explained also in an interacting boson model for the Cooper pairs on the α-like superfluid vacuum. Adding a correction term due to the T = 0 2n− 2p correlations, which determines the T = 0 base level for nuclear masses, could improve the mass formulas in practice.
منابع مشابه
ar X iv : n uc l - th / 0 50 30 06 v 2 2 1 M ay 2 00 5 1 An Alternative Understanding of Mass Formulas in Terms of Nuclear Structure
A typical form of mass formula is re-explained in terms of nuclear structure. For N ≈ Z nuclei, we propose to start with the shell model picture and to consider the T = 0 2n−2p (αlike) correlations as the fundamental concept, instead of the symmetry energy. Subsequently, the symmetry energy is described on the basis of the α-like superfluidity caused by the T = 0 2n− 2p correlations, in paralle...
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