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.

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