Note on Klein-Nishina effect in strong-field QED: the case of nonlinear Compton scattering

2024/03/27 by Uwe Hernandez Acosta, Acosta, Uwe Hernandez, Burkhard Kämpfer +1 · 1 citation
Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Laser-Matter Interactions and Applications #Laser-Plasma Interactions and Diagnostics

paper · pdf · doi:10.48550/arxiv.2403.19034

openalex publication_date 2024/03/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Suitably normalized differential probabilities of one-photon emission in external electromagnetic fields are compared to quantify the transit of nonlinear Compton scattering to linear Compton scattering, described by the Klein-Nishina formula, and to constant crossed field treatment. The known Klein-Nishina suppression at large energies is further enforced by increasing field intensity. In view of the Ritus-Narozhny conjecture, we demonstrate that different paths in the field intensity vs. energy plane towards large values of the quantum non-linearity parameter χ facilitate significantly different asymptotic dependencies, both in the Klein-Nishina regime and the constant crossed field regime and in between.

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