51. Spin-polarization effects of an ultrarelativistic electron beam in an ultraintense two-color laser pulse
- Author
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Jian-Xing Li, Yan-Fei Li, Huai-Hang Song, Yutong Li, and Wei-Min Wang
- Subjects
Physics ,Photon ,Spin polarization ,Monte Carlo method ,FOS: Physical sciences ,Computational Physics (physics.comp-ph) ,Polarization (waves) ,Laser ,01 natural sciences ,Physics - Plasma Physics ,010305 fluids & plasmas ,law.invention ,Plasma Physics (physics.plasm-ph) ,law ,0103 physical sciences ,Cathode ray ,Radiative transfer ,Atomic physics ,010306 general physics ,Quantum ,Physics - Computational Physics ,Optics (physics.optics) ,Physics - Optics - Abstract
Spin-polarization effects of an ultrarelativistic electron beam head-on colliding with an ultraintense two-color laser pulse are investigated comprehensively in the quantum radiation-dominated regime. We employ a Monte Carlo method, derived from the recent work of [Phys. Rev. Lett. {\bf 122}, 154801 (2019)], to calculate the spin-resolved electron dynamics and photon emissions in the local constant field approximation. We find that electron radiation probabilities in adjacent half cycles of a two-color laser field are substantially asymmetric due to the asymmetric field strengths, and consequently, after interaction the electron beam can obtain a total polarization of about 11\% and a partial polarization of up to about 63\% because of radiative spin effects, with currently achievable laser facilities, which may be utilized in high-energy physics and nuclear physics. Moreover, the considered effects are shown to be crucially determined by the relative phase of the two-color laser field and robust with respect to other laser and electron beam parameters., 7 pages, 7 figures
- Published
- 2019