Curved and diffuse interface effects on the nuclear surface tension

Details Curved and diffuse interface effects on the nuclear surface tension Curved and diffuse interface effects on the nuclear surface tension

2011-10-07

arxiv.org/abs/1110.1566v2

Physics

Nuclear Physics

Nuclear Theory

17 pages, 4 figures, 1 table; new section is added, the text is modified, references are slightly modified

Scientific paper

We redefine the surface tension coefficient for a nuclear Fermi-liquid drop with a finite diffuse layer. Following Gibbs-Tolman concept, we introduce the equimolar radius R_e of sharp surface droplet at which the surface tension is applied and the radius of tension surface R_s which provides the minimum of the surface tension coefficient \sigma. This procedure allows us to derive both the surface tension and the corresponding curvature correction (Tolman length) correctly for the curved and diffuse interface. We point out that the curvature correction depends significantly on the finite diffuse interface. This fact is missed in traditional nuclear considerations of curvature correction to the surface tension. We show that Tolman's length \xi is negative for nuclear Fermi-liquid drop. The value of the Tolman length is only slightly sensitive to the Skyrme force parametrization and equals \xi=-0.36 fm.

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