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Summary: Europhys. Lett., 67 (5), pp. 753759 (2004)
DOI: 10.1209/epl/i2004-10113-x
EUROPHYSICS LETTERS 1 September 2004
Improved effective momentum approximation for
quasielastic (e, e ) scattering off highly charged nuclei
A. Aste and J. Jourdan
Institute for Physics, University of Basel - 4056 Basel, Switzerland
(received 30 April 2004; accepted in final form 14 June 2004)
PACS. 25.70.Bc Elastic and quasielastic scattering.
PACS. 25.30.Fj Inelastic electron scattering to continuum.
PACS. 11.80.Fv Approximations (eikonal approximation, variational principles, etc.).
Abstract. We address the problem of including Coulomb distortion effects in inclusive
quasielastic (e, e ) reactions using an improved version of the effective momentum approxima-
tion. Arguments are given that a simple modification of the effective momentum approximation,
which is no longer applicable in its original form in the case of highly charged nuclei, leads to
very good results. A comparison of the improved effective momentum method with exact cal-
culations is given. A critical remark concerns recent experiments with inclusive quasielastic
positron scattering.
Nucleon knockout by quasielastic electron scattering provides a powerful possibility to ex-
plore the electromagnetic properties of nucleons and of the momentum distributions in nuclei,
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