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Laser-driven lepton polarization in the quantum radiation-dominated reflection regime
High Energy Physics - Phenomenology · Submitted 14 Jul 2023
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim It provides a new approach for producing polarized high density electron and positron jets at ultraintense laser facilities.
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The abstract, sentence by sentence
Generation of ultrarelativistic polarized leptons during interaction of an ultrarelativistic electron beam with a counterpropagating ultraintense laser pulse is investigated in the quantum radiation-dominated domain. While the symmetry of the laser field tends to average the radiative polarization of leptons to zero, we demonstrate the feasibility of sizable radiative polarization through breaking the symmetry of the process in the reflection regime. After the reflection, the off-axis particles escape the tightly focused beam with polarization correlated to the emission angle, while the particles at the beam center are more likely to be captured in the laser field with unmatched polarization and kinetic motion. Meanwhile, polarization along the electric field emerges due to the spin rotation in the transverse plane via precession. In this way, the combined effects of radiative polarization, spin precession and the laser field focusing are shaping the angle-dependent polarization for outgoing leptons. Our spin-resolved Monte Carlo simulations demonstrate an angle-dependent polarization degree up to $\sim20\%$ for both electrons and positrons, with a yield of one pair per seed electron. It provides a new approach for producing polarized high density electron and positron jets at ultraintense laser facilities.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Generation of ultrarelativistic polarized leptons during interaction of an ultrarelativistic electron beam with a counterpropagating ultraintense laser pulse is investigated in the quantum radiation-dominated domain. | contribution 0.86 | 0.45 | 0.05 | asserted 0.70 |
| s1 | While the symmetry of the laser field tends to average the radiative polarization of leptons to zero, we demonstrate the feasibility of sizable radiative polarization through breaking the symmetry of the process in the reflection regime. | contribution 0.75 | 0.83 | 0.48 | asserted 0.94 |
| s2 | After the reflection, the off-axis particles escape the tightly focused beam with polarization correlated to the emission angle, while the particles at the beam center are more likely to be captured in the laser field with unmatched polarization and kinetic motion. | result 0.54 | 0.71 | 0.10 | asserted 0.97 |
| s3 | Meanwhile, polarization along the electric field emerges due to the spin rotation in the transverse plane via precession. | result 0.54 | 0.66 | 0.05 | asserted 1.00 |
| s4 | In this way, the combined effects of radiative polarization, spin precession and the laser field focusing are shaping the angle-dependent polarization for outgoing leptons. | interpretation 0.97 | 0.60 | 0.14 | asserted 1.00 |
| s5 | Our spin-resolved Monte Carlo simulations demonstrate an angle-dependent polarization degree up to $\sim20\%$ for both electrons and positrons, with a yield of one pair per seed electron. | result 1.00 | 0.96 | 0.48 | asserted 1.00 |
| s6 | It provides a new approach for producing polarized high density electron and positron jets at ultraintense laser facilities. | interpretation 0.93 | 0.49 | 0.57 | asserted 0.95 |
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The paper
Original abstract
Generation of ultrarelativistic polarized leptons during interaction of an ultrarelativistic electron beam with a counterpropagating ultraintense laser pulse is investigated in the quantum radiation-dominated domain. While the symmetry of the laser field tends to average the radiative polarization of leptons to zero, we demonstrate the feasibility of sizable radiative polarization through breaking the symmetry of the process in the reflection regime. After the reflection, the off-axis particles escape the tightly focused beam with polarization correlated to the emission angle, while the particles at the beam center are more likely to be captured in the laser field with unmatched polarization and kinetic motion. Meanwhile, polarization along the electric field emerges due to the spin rotation in the transverse plane via precession. In this way, the combined effects of radiative polarization, spin precession and the laser field focusing are shaping the angle-dependent polarization for outgoing leptons. Our spin-resolved Monte Carlo simulations demonstrate an angle-dependent polarization degree up to $\sim20\%$ for both electrons and positrons, with a yield of one pair per seed electron. It provides a new approach for producing polarized high density electron and positron jets at ultraintense laser facilities.
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How the literature uses it
1 arXiv paper cite this in 1 sentence
Papers citing it
Cites it as background 1 paper
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Recently, various LCFA probabilities have been derived incorporating electron-positron spins and photon polarization [ref] , and has been applied to QED-simulations codes for studying polarization effects in strong-field QED processes [ref] .
Interferences effects in polarized nonlinear Breit-Wheeler process · Introduction · 0.84
What it cites · 2 sentences without a confident label
Cites as background 1 paper
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For a detailed discussions on this topic, please refer to our recent paper [ref] .
Strong signature of one-loop self-energy in polarization resolved nonlinear Compton scattering · A2: Spin-resolved no-emission probability · 0.94
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