Hannover 2020 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 38: Quantum Effects (QED) I

Q 38.3: Talk

Wednesday, March 11, 2020, 14:30–14:45, f442

Numerical simulation of non-linear Compton scattering in counter-propagating laser beams — •Qingzheng Lyu, Erez Raicher, Karen Z. Hatsagortsyan, and Christoph H. Keitel — Max-Planck-Institut für Kernphysik, Heidelberg, Germany

The non-linear Compton scattering process of an electron in counter-propagating laser beams is considered. Employing the semiclassical operator approach [Sov. Phys. JETP 26, 854 (1968)], we can obtain the emission spectrum of an ultra-relativistic electron propagating in the counter-propagating laser beams. Because of the ultra-relativistic energy of the particle, the emission can be approximated by the classical trajectory of the particle instead of the full wave function in the background field. We investigate the spectrum for various laser and particle parameters. In particular, the validity conditions of the local constant field approximation, which is relevant for simulating QED processes in laser-plasma interactions, are examined in this more general situation.