Impulse approximation theory of laserassisted inelastic collisions
Abstract
The impulse approximation highenergy scattering theory for inelastic collisions is reformulated to include the effects of a laser radiation field. The case of an electron colliding inelastically with a oneelectron atom in the presence of a laser radiation field represented in the dipole approximation with linear polarization is considered, and the unperturbed states for a bound electron embedded in a laser radiation field are approximated. The impulse approximation is then introduced into the first Born approximation, and improved by replacing the plane waves in the twobody matrix element by corresponding Coulomb functions. The transition probability and the differential cross section for laserassociated multiphoton inelastic collisions are then derived. The effects on the fieldfree cross section of introducing the impulse hypothesis before the required time integration is carried out, instead of after the integration as done by McDowell and Coleman (1970), are discussed.
 Publication:

Nuovo Cimento Lettere
 Pub Date:
 November 1979
 Bibcode:
 1979NCimL..26..321C
 Keywords:

 Inelastic Collisions;
 Laser Outputs;
 Light Scattering;
 Approximation;
 S Matrix Theory;
 Wave Functions;
 Lasers and Masers