Polarized ultrashort brilliant multi-GeV $\gamma$-rays via single-shot laser-electron interaction
Abstract
Generation of circularly-polarized (CP) and linearly-polarized (LP) -rays via the single-shot interaction of an ultraintense laser pulse with a spin-polarized counterpropagating ultrarelativistic electron beam has been investigated in nonlinear Compton scattering in the quantum radiation-dominated regime. For the process simulation a Monte Carlo method is developed which employs the electron-spin-resolved probabilities for polarized photon emissions. We show efficient ways for the transfer of the electron polarization to the high-energy photon polarization. In particular, multi-GeV CP (LP) -rays with polarization of up to about 95\% can be generated by a longitudinally (transversely) spin-polarized electron beam, with a photon flux at a single shot meeting the requirements of recent proposals for the vacuum birefringence measurement in ultrastrong laser fields. Such high-energy, high-brilliance, high-polarization -rays are also beneficial for other applications in high-energy physics, nuclear physics, and laboratory astrophysics.
Keywords
Cite
@article{arxiv.1907.08877,
title = {Polarized ultrashort brilliant multi-GeV $\gamma$-rays via single-shot laser-electron interaction},
author = {Yan-Fei Li and Rashid Shaisultanov and Yue-Yue Chen and Feng Wan and Karen Z. Hatsagortsyan and Christoph H. Keitel and Jian-Xing Li},
journal= {arXiv preprint arXiv:1907.08877},
year = {2020}
}