Surface behaviour of the pairing gap in a slab of nuclear matter

Details Surface behaviour of the pairing gap in a slab of nuclear matter Surface behaviour of the pairing gap in a slab of nuclear matter

2003-02-14

arxiv.org/abs/nucl-th/0302035v1

Eur.Phys.J. A18 (2003) 17-23

Physics

Nuclear Physics

Nuclear Theory

12 pages, 2 figures

Scientific paper

10.1140/epja/i2003-10064-8

The surface behaviour of the pairing gap previously studied for semi-infinite nuclear matter is analyzed in the slab geometry. The gap-shape function is calculated in two cases: (a) pairing with the Gogny force in a hard-wall potential and (b) pairing with the separable Paris interaction in a Saxon-Woods mean-field potential. It is shown that the surface features are preserved in the case of slab geometry, being almost independent of the width of the slab. It is also demonstrated that the surface enhancement is strengthened as the absolute value of chemical potential $|\mu|$ decreases which simulates the approach to the nucleon drip line.

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