Resonant high-energy bremsstrahlung of ultrarelativistic electrons in the field of a nucleus and a weak electromagnetic wave

Abstract

The actual theoretical research investigates the resonant spontaneous bremsstrahlung (RSB) of ultrarelativistic electrons under the condition of scattering on a nucleus in the field of a weak electromagnetic wave. The progression of the functional mechanism indicates the transformation of the intermediate virtual electron into the real particle state. Therefore, the initial second order process with accordance to the fine structure constant in the light field productively splits into two consequent first order formations: the laser-stimulated Compton effect and the laser-assisted Mott procedure of scattering of an electron on a nucleus. Furthermore, precise examination specifies the resonant kinematics of the RSB system that delineate the configuration of the initial and final electrons with addendum of spontaneous high-energy photon propagation in the narrow angle cone. As a result of the investigation, the calculations determine the scattering differential cross-section of the resonant interaction development. To summarize, the particular cross-section within the resonant ambience significantly exceeds the coordinate cross-section in the approximation of an external field absence. In conclusion, numerous scientific facilities with specialization in pulsed laser radiation (SLAC, FAIR, XFEL, ELI, XCELS) may experimentally validate the computational estimations.