Radiative deflection by spin effect in the quantum radiation-reaction regime
Abstract
The colliding between ultra-relativistic electrons and an ultra-intense laser pulse is a powerful approach to testify the physics in strong-field QED regime. By considering spin-dependent radiation-reaction during laser-electron collision we find anti-symmetric deflection of electrons with different spin states. We revealed that such deflection is induced by the non-zero work done by radiation-reaction force along field polarization-direction in a half-period of phase, which is larger for spin-anti-paralleled electrons and smaller for spin-paralleled electrons. The spin-projection on the magnetic field of an electron gets inversed in adjacent half-periods due to oscillating magnetic field and therefore the deflection due to spin-dependent radiation is accumulated rather than vanishing. The new mechanism provides an extra dimension to observe quantum radiation-reaction effect in the strong-field QED regime by measuring the anti-symmetric distribution.
Cite
@article{arxiv.1901.10641,
title = {Radiative deflection by spin effect in the quantum radiation-reaction regime},
author = {X. S. Geng and L. L. Ji and B. F. Shen and B. Feng and Z. Guo and Q. Q. Han and C. Y. Qin and N. W. Wang and W. Q. Wang and Y. T. Wu and X. Yan and Q. Yu and L. G. Zhang and Z. Z. Xu},
journal= {arXiv preprint arXiv:1901.10641},
year = {2020}
}
Comments
5 pages, 4 figures