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DOI 10.1140/epja/i2005-10169-0 Eur. Phys. J. A 26, 167178 (2005)

Summary: DOI 10.1140/epja/i2005-10169-0
Eur. Phys. J. A 26, 167­178 (2005)
Coulomb distortion of relativistic electrons in the nuclear
electrostatic field
A. Astea
, C. von Arx, and D. Trautmann
Department for Physics and Astronomy, University of Basel, 4056 Basel, Switzerland
Received: 29 June 2005 / Revised version: 3 October 2005 /
Published online: 8 December 2005 ­ c Societ`a Italiana di Fisica / Springer-Verlag 2005
Communicated by G. Orlandini
Abstract. Continuum states of the Dirac equation are calculated numerically for the electrostatic field
generated by the charge distribution of an atomic nucleus. The behavior of the wave functions of an in-
coming electron with given asymptotic momentum in the nuclear region is discussed in detail and the
results are compared to different approximations used in the data analysis for quasielastic electron scatter-
ing off medium and highly charged nuclei. It is found that most of the approximations provide an accurate
description of the electron wave functions in the range of electron energies above 100 MeV typically used in
experiments for quasielastic electron scattering off nuclei only near the center of the nucleus. It is therefore
necessary that the properties of exact wave functions are investigated in detail in order to obtain reliable


Source: Aste, Andreas - Institut für Physik, Universität Basel


Collections: Physics