Comment on Mott Scattering in strong Laser Field

Abstract

The first differential cross section for Mott scattering of a Dirac-Volkov electron is reviewed. The expression (26) derived by Szymanowski et al. [Physical Review A {\bf 56}, 3846,(1997)] is corrected. In particular, we disagree with the expression of $(\frac{d\sigma }{d\Omega })$ they obtained and we give the exact coefficients multiplying the various Bessel functions appearing in the scattering differential cross section.

16 pages, LaTex, added reference for section 3, corrected some typosReport no: LPHEA 02-01