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Photon polarization effects in polarized electron-positron pair production in a strong laser field
- Source :
- Matter and Radiation at Extremes 7(2022), 014401
- Publication Year :
- 2022
-
Abstract
- Deep understanding of the impact of photon polarization on pair production is essential for the efficient generation of laser-driven polarized positron beams and demands a complete description of polarization effects in strong-field QED processes. Employing fully polarization-resolved Monte Carlo simulations, we investigate correlated photon and electron (positron) polarization effects in the multiphoton Breit–Wheeler pair production process during the interaction of an ultrarelativistic electron beam with a counterpropagating elliptically polarized laser pulse. We show that the polarization of e−e+ pairs is degraded by 35% when the polarization of the intermediate photon is resolved, accompanied by an ∼13% decrease in the pair yield. Moreover, in this case, the polarization direction of energetic positrons at small deflection angles can even be reversed when high-energy photons with polarization parallel to the laser electric field are involved.
- Subjects :
- Physics::Atomic Physics
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Matter and Radiation at Extremes 7(2022), 014401
- Accession number :
- edsair.od......4577..c484c25f5353c8d4ea9453711b48edac