Abstract
The differential cross section (DCS) of charged-particle scattering by a static potential in the presence of an amplitude-modulated radiation field is derived. The first Born approximation, a modulation frequency much less than the carrier frequency and modulation depths smaller than unity are used. Through an amplification factor the calculated DCS with n-photon exchanges are compared with those calculated for a homogeneous, single-mode radiation field. In general, the modulation of the amplitude is found to give rise to a significant averaging of the DCS with different numbers of exchanged photons, especially when the modulation depth is not too small. For relatively large modulation depths the results obtained show some features also common to chaotic fields. For modulation depths near unity a strong temporal inhomogeneity mechanism comes into play, enhancing DCS with no photon exchanges and levelling those with n not=0.
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