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Quantum-stochasticity-induced asymmetry in angular distribution of electrons in a quasi-classical regime

Impacts of quantum stochasticity on the dynamics of an ultra-relativistic electron beam head-on colliding with a linearly polarized ultra-intense laser pulse are theoretically investigated in a quasi-classical regime. Generally, the angular distribution of the electron beam keeps symmetrically in tr...

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Published in:arXiv.org 2020-06
Main Authors: Hu, Guang, Wei-Qiang, Sun, Bing-Jun, Li, Yan-Fei, Li, Wei-MinWang, Zhu, Meng, Hua-Si Hu, Yu-Tong, Li
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Wei-Qiang, Sun
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Hua-Si Hu
Yu-Tong, Li
description Impacts of quantum stochasticity on the dynamics of an ultra-relativistic electron beam head-on colliding with a linearly polarized ultra-intense laser pulse are theoretically investigated in a quasi-classical regime. Generally, the angular distribution of the electron beam keeps symmetrically in transverse directions in this regime, even under the ponderomotive force of the laser pulse. Here we show that when the initial angular divergence \(\Delta \theta_i \lesssim 10^{-6} a_0^2\) with \(a_0\) being the normalized laser field amplitude, an asymmetric angular distribution of the electron beam arises due to the quantum stochasticity effect, via simulations employing Landau-Lifshitz, quantum-modified Landau-Lifshitz equations, and quantum stochastic radiation reaction form to describe the radiative electron dynamics respectively. The asymmetry is robust against a variety of laser and electron parameters, providing an experimentally detectable signature for the nature of quantum stochasticity of photon emission with laser and electron beams currently available.
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subjects Angular distribution
Divergence
Electrons
Laser beams
Lasers
Linear polarization
Photon emission
Ponderomotive forces
Relativistic electron beams
Skewed distributions
title Quantum-stochasticity-induced asymmetry in angular distribution of electrons in a quasi-classical regime
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