ELECTRON-IMPACT PROCESSES IN SUPERINTENSE LASER FIELDS

We discuss the motion of an electron in a classical electromagnetic wa ve, including ponderomotive force effects. To describe electron impact stimulated reactions under the action of superstrong laser field we f ormulate instant-impact approximation. We demonstrate how it can be ap plied to calculate hard electron-nuclear processes for obtaining the r eaction rates for such effects as trident pair production, hard X-ray generation, electrostimulated nuclear fission, and both ions and nucle i excitation by electron impact in the laser field.