Hannover 2020 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 20: Laser plasma and laser applications 2
P 20.6: Vortrag
Donnerstag, 12. März 2020, 15:30–15:45, b302
Ultrafast Polarization of an Electron Beam in Intense Bi-chromatic Laser Pulses — •Daniel Seipt1,2, Dario Del Sorbo3, Christopher P. Ridgers4, and Alec G. R. Thomas2 — 1Helmholtz-Institut Jena, Fröbelstieg 3, D-07743 Jena, Germany — 2The Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, MI-48109, USA — 3High Energy Density Science Division, SLAC National Accelerator Laboratory, Menlo Park, CA-94025, USA — 4York Plasma Institute, Department of Physics, University of York, York YO10 5DD, UK
Recent high-intensity laser-plasma experiments provided evidence for quantum radiation reaction effects due to hard photon emission. In this talk I will discuss the radiative spin-polarization of the electrons as a manifestation of quantum radiation reaction affecting the spin-dynamics. It is demonstrated that radiative polarization of high-energy electron beams can be achieved in collisions with PW class bi-chromatic laser pulses. We employ both a Boltzmann kinetic approach and a Monte-Carlo algorithm within the quasi-classical approximation of intense field QED to simulate the interaction. Aspects of spin dependent radiation reaction are addressed, where spin polarization leads to a measurable splitting of the energies of spin-up and spin-down electrons. Immediate consequences for extreme-intensity laser plasmas are discussed.