Berlin 2014 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 9: Theory of Quantum Plasmas II

P 9.3: Vortrag

Dienstag, 18. März 2014, 11:15–11:30, SPA HS202

Stochasticity effects in quantum radiation reaction — •Norman Neitz and Antonino Di Piazza — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg

In the framework of classical electrodynamics radiation reaction effects were shown to decrease the energy spread of ion beams created by the collision of strong laser pulses with thin plasma foils [1]. However, by employing a kinetic approach [2] in the framework of strong-field QED [3] we demonstrate that quantum radiation reaction has the opposite tendency in the head-on collision of an electron beam with an intense laser pulse. We explain the broadening of the electron energy distribution with the intrinsic stochastic nature of photon emission which is substantial in the quantum regime [4]. Further, we study how the dynamics of the photons and charged particles is altered by the inclusion of the pair production process. Our numerical results indicate the feasibility of measuring the investigated effects with present technology.
[1] M. Tamburini et al., New. J. Phys. 12, 123005 (2010).
V. N. Baier, V. M. Katkov and V. M. Strakhovenko, “Electromagnetic processes at high energies in oriented single crystals” (World Scientific, Singapore, 1998).
A. Di Piazza et al., Rev. Mod. Phys. 84, 1177 (2012).
N. Neitz and A. Di Piazza, Phys. Rev. Lett. 111, 054802 (2013).