6533b831fe1ef96bd129862f
RESEARCH PRODUCT
Second-order approximations to laser-assisted charged-particle scattering.
F. Trombettasubject
MomentumPhysicsField (physics)ScatteringOrder (ring theory)Scattering lengthElementary particleAtomic physicsBorn approximationAtomic and Molecular Physics and OpticsCharged particledescription
Multiphoton free-free transitions within a full second-order treatment of the scattering potential are considered with two specific aims: (i) to test some widely used approximations against exact calculations; (ii) to present differential cross sections for the laser-assisted positron scattering, in the regime of intermediate field intensities (up to ${10}^{13}$ W/${\mathrm{cm}}^{2}$). In the case of a field linearly polarized along the incident particle momentum, the results clearly discriminate among the approximations, setting interesting limitations to each of them as functions of the scattering potential features and of the field parameters. Each approach shows good performance for particular scattering angle ranges, pointing to the need for improved techniques to work out fully reliable and easy-to-handle approximations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-08-01 | Physical review. A, Atomic, molecular, and optical physics |