Generation of High-Brilliance Polarized $γ$-Rays via Vacuum Dichroism-assisted Vacuum Birefringence

Fuente: arXiv
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Autores principales: Lv, Chong, Wan, Feng, Salamin, Yousef I., Zhao, Qian, Ababekri, Mamutjan, Xu, Ruirui, Li, Jian-Xing
Formato: Preprint
Publicado: 2024
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author Lv, Chong
Wan, Feng
Salamin, Yousef I.
Zhao, Qian
Ababekri, Mamutjan
Xu, Ruirui
Li, Jian-Xing
author_facet Lv, Chong
Wan, Feng
Salamin, Yousef I.
Zhao, Qian
Ababekri, Mamutjan
Xu, Ruirui
Li, Jian-Xing
contents We put forward a novel method to generate high-brilliance polarized $γ$-photon beams via vacuum dichroism (VD)-assisted vacuum birefringence (VB) effect. We split a linearly polarized (LP) laser pulse into two subpulses with the first one colliding with a dense unpolarized electron beam to generate LP $γ$ photons (via nonlinear Compton scattering), which then further collide with the second subpulse and are partially transformed into circularly polarized ones via the VB effect. We find that by manipulating the relative polarization of two subpulses, one can ``purify'' (i.e., enhance) the polarization of the $γ$-photon beam via the VD effect. Due to the VD assistance, the VB effect reaches optimal when the relative polarization is nearly $30^\circ$, not the widely used $45^\circ$ in the common VB detection methods. In addition, our method can be used to efficiently confirm the well-known VB effect itself, which has not been directly observed in experiments yet.
format Preprint
id arxiv_https___arxiv_org_abs_2401_14075
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Generation of High-Brilliance Polarized $γ$-Rays via Vacuum Dichroism-assisted Vacuum Birefringence
Lv, Chong
Wan, Feng
Salamin, Yousef I.
Zhao, Qian
Ababekri, Mamutjan
Xu, Ruirui
Li, Jian-Xing
Plasma Physics
We put forward a novel method to generate high-brilliance polarized $γ$-photon beams via vacuum dichroism (VD)-assisted vacuum birefringence (VB) effect. We split a linearly polarized (LP) laser pulse into two subpulses with the first one colliding with a dense unpolarized electron beam to generate LP $γ$ photons (via nonlinear Compton scattering), which then further collide with the second subpulse and are partially transformed into circularly polarized ones via the VB effect. We find that by manipulating the relative polarization of two subpulses, one can ``purify'' (i.e., enhance) the polarization of the $γ$-photon beam via the VD effect. Due to the VD assistance, the VB effect reaches optimal when the relative polarization is nearly $30^\circ$, not the widely used $45^\circ$ in the common VB detection methods. In addition, our method can be used to efficiently confirm the well-known VB effect itself, which has not been directly observed in experiments yet.
title Generation of High-Brilliance Polarized $γ$-Rays via Vacuum Dichroism-assisted Vacuum Birefringence
topic Plasma Physics
url https://arxiv.org/abs/2401.14075