Abstract
We study laser-assisted fast (e, 2e) collisions on atomic hydrogen both in perturbative and in nonperturbative regimes of laser radiation. We calculate multiphoton triple differential cross sections in asymmetric coplanar kinematics employing the first Born approximation in the projectile–target interaction. The study allows us to test the robustness of our recently formulated quasi-Sturmian-Floquet method to treat the dressing of the initial and final atomic states by the laser field. In both radiation regimes our method exhibits high efficiency for different net numbers of photons exchanged between the colliding system and the laser field.
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