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Journal Articles Atoms Year : 2020

On Laser-Modified Rutherford Scattering

Abstract

We present a theoretical analysis of a charged-particle scattering by a Coulomb potential in the presence of laser radiation. The effect of a laser field is studied using our recently developed nonperturbative parabolic quasi-Sturmian approach for solving the system of coupled Lippmann\textendash Schwinger\textendash Floquet equations in the Kramers\textendash Henneberger frame. We calculate the ratio of multiphoton differential cross sections to the Rutherford cross section in the case of a laser-assisted electron-proton scattering process. Our results are compared with predictions of the Bunkin\textendash Fedorov, Kroll\textendash Watson, and Coulomb\textendash Volkov analytical approximations: marked discrepancies are found for different net numbers of exchanged photons and different orientations of the laser-field polarization vector. Our findings clearly demonstrate deficiencies of those well-known approximations for describing laser-modified Rutherford scattering processes.

Dates and versions

hal-03603498 , version 1 (09-03-2022)

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Sergey A. Zaytsev, Alexander S. Zaytsev, Lorenzo U. Ancarani, Konstantin A. Kouzakov. On Laser-Modified Rutherford Scattering. Atoms, 2020, 8 (3), pp.40. ⟨10.3390/atoms8030040⟩. ⟨hal-03603498⟩
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