Research Papers in Physics and Astronomy


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Preprint version of article published in Physics Letters A 334 (2005) 197–204. Copyright Elsevier Science. Used by permission.
There were no revisions requested by the referees; this is the version that was accepted for publication.


We analyze the laser ellipticity dependence of n-photon differential cross sections (dσn/dΩ) for electron-atom scattering in an intense elliptically polarized laser field. We show that there exist two plateau-like structures in the dependence of dσn/dΩ on n for any ellipticity, including for the case of circular polarization. We present numerical predictions for e-H scattering in a CO2-laser field and an analytical description of the plateau features in terms of the rescattering scenario.

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