Eur. Phys. J. D 5, 159-165 (1999)
https://doi.org/10.1007/s100530050239

Polarisation effect of laser field in inelastic electron - hydrogen collisions

¹ UFR de Physique Atomique, Moléculaire et Optique Appliquée, Université My Ismaïl, Faculté des Sciences, Meknès, Maroc
² Institut de Mathématiques et Sciences Physiques, Université Nationale du Bénin, B.P. 613, Porto-Novo, Bénin

Received: 17 February 1998
Revised: 20 July 1998
Accepted: 2 September 1998
Published online: 15 February 1999

Abstract

We study the influence of the laser polarization on the electron impact excitation of atomic hydrogen. Our method takes into account the "dressing" of the target states by including the laser-atom interaction to first order time-dependent perturbation theory, while the interaction of the laser field with the incident electron is treated to all orders by using the non relativist Volkov function. The interaction of the fast projectile with the target atom is treated in the first Born approximation. The calculations are performed via two distinct computations. The first one is based on a direct calculation, the second based on a Sturmian approach. Important differences appear between the angular distributions depending on the polarization chosen.