Approximate Coulomb distortion effects in (e,e′p) reactions

Abstract

In this paper we apply a well-tested approximation of electron Coulomb distortion effects to the exclusive reaction (e, e ′ p) in the quasielastic region.We compare the approximate treatment of Coulomb distortion effects to the exact Distorted Wave Born Approximation evaluated by means of partial wave analysis to gauge the quality of our approximate treatment. We show that the approximate Møller potential has a plane-wave-like structure and hence permits the separation of the cross section into five terms which depend on bi-linear products of transforms of the transition four current elements.These transforms reduce to Fourier transforms when Coulomb distortion is not present, but become modified with the inclusion of Coulomb distortion.We investigate the application of the approximate formalism to a model of 208 P b(e, e ′ p) using Dirac-Hartree single particle wavefunctions for the ground state and relativistic optical model wavefunctions for the continuum proton.We show that it is still possible to extract, albeit with some approximation, the various structure functions from the experimentally measured data even for heavy nuclei.25.30.Fj 25.70.Bc.

Channel coupling inA(e→,e′N→Kelly1 1999Phys. Rev. C452640View full textAdd to dashboardCite

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