Asymptotic electron motion in strong radiation-dominated regime

Abstract

We study electron motion in electromagnetic (EM) fields in the radiation-dominated regime. It is shown that the electron trajectories become close to some asymptotic trajectories in the strong field limit. The description of the electron dynamics by this asymptotic trajectories significantly differs from the ponderomotive description that is barely applicable in the radiation-dominated regime. The particle velocity on the asymptotic trajectory is completely determined by the local and instant EM field. The general properties of the asymptotic trajectories are discussed. In most of standing EM waves (including identical tightly-focused counter-propagating beams) the asymptotic trajectories are periodic with the period of the wave field. Furthermore, for a certain model of the laser beam we show that the asymptotic trajectories are periodic in the reference frame moving along the beam with its group velocity that may explain the effect of the radiation-reaction trapping.

arXiv comment14 pages, 6 figures, sent to Phys. Rev. A

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Cited by in corpus (10)

• Charged particle motion and radiation in strong electromagnetic fields
• Radiation reaction in electron-beam interactions with high-intensity lasers
• Radiation dominated particle and plasma dynamics
• Multiple-colliding laser pulses as a basis for studying high-field high-energy physics
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• Radiation reaction-dominated regime of wakefield acceleration
• High-order corrections to the radiation-free dynamics of an electron in the strongly radiation-dominated regime
• Particle trajectories, gamma-ray emission, and anomalous radiative trapping effects in magnetic dipole wave
• Dynamics of ultrarelativistic charged particles with strong radiation reaction. II. Entry into Aristotelian equilibrium
• Laser-driven vacuum breakdown waves