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Transitional effects in electron-atom scattering in a laser field near the interface between radiation filled space and vacuum

We investigate the modifications of the energy spectrum in electron-atom scattering in a laser field if the atom is placed near the interface between radiation filled space and vacuum. Considerable modifications are found if compared with the results for a laser beam of infinite extent. With the advent of femto- and attosecond laser pulses, the investigation of such edge effects will become of relevance in comparing experimental data with theoretical predictions.