No-recoil approximation to knock-on exchange potential in the double folding model for heavy-ion collisions

Details No-recoil approximation to knock-on exchange potential in the double folding model for heavy-ion collisions No-recoil approximation to knock-on exchange potential in the double folding model for heavy-ion collisions

2006-03-09

arxiv.org/abs/nucl-th/0603027v2

Phys.Rev. C74 (2006) 037601

Physics

Nuclear Physics

Nuclear Theory

4 pages, 1 eps figures

Scientific paper

10.1103/PhysRevC.74.037601

We propose the no-recoil approximation, which is valid for heavy systems, for a double folding nucleus-nucleus potential. With this approximation, the non-local knock-on exchange contribution becomes a local form. We discuss the applicability of this approximation for the elastic scattering of $^6$Li + $^{40}$Ca system. We find that, for this system and heavier, the no-recoil approximation works as good as another widely used local approximation which employs a local plane wave for the relative motion between the colliding nuclei. We also compare the results of the no-recoil calculations with those of the zero-range approximation often used to handle the knock-on exchange effect.

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