Polarized positron beams via intense two-color laser pulses

Abstract

Generation of ultrarelativistic polarized positrons during interaction of an ultrarelativistic electron beam with a counterpropagating two-color petawatt laser pulse is investigated theoretically. Our Monte Carlo simulation based on a semi-classical model, incorporates photon emissions and pair productions, using spin-resolved quantum probabilities in the local constant field approximation, and describes the polarization of electrons and positrons for the pair production and photon emission processes, as well as the classical spin precession in-between. The main reason of the polarization is shown to be the spin-asymmetry of the pair production process in strong external fields, combined with the asymmetry of the two-color laser field. Employing a feasible scenario, we show that highly polarized positron beams, with a polarization degree of $\zeta \approx 60\%$, can be produced in a femtosecond time scale, with a small angular divergence, $\sim 74$ mrad, and high density $\sim 10^{14}$ cm${}^{-3}$. The laser-driven positron source, along with laser wakefield acceleration, may pave the way to small scale facilities for high energy physics studies.

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Cited by in corpus (50)

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• Spin and polarisation dependent LCFA rates for nonlinear Compton and Breit-Wheeler processes
• Ultrafast Polarization of an Electron Beam in an Intense Bi-chromatic Laser Field
• Production of Highly Polarized Positron Beams via Helicity Transfer from Polarized Electrons in a Strong Laser Field
• Ultrarelativistic polarized positron jets via collision of electron and ultraintense laser beams
• Loops and polarization in strong-field QED
• Polarized QED cascades
• Spin-polarization effects of an ultrarelativistic electron beam in an ultraintense two-color laser pulse
• Dense Polarized Positrons from Laser-Irradiated Foil Targets in the QED Regime
• Impact of the laser spatio-temporal shape on Breit-Wheeler pair production
• Retrieving transient magnetic fields of ultrarelativistic laser plasma via ejected electron polarization
• High-energy gamma-photon polarization in nonlinear Breit-Wheeler pair production and gamma-polarimetry
• Electron polarization in ultrarelativistic plasma current filamentation instabilities
• Electron spin- and photon polarization-resolved probabilities of strong-field QED processes
• Generation of polarized particle beams at relativistic laser intensities
• Photon polarization effects in polarized electron-positron pair production in a strong laser field
• Linear Breit-Wheeler pair production by high-energy bremsstrahlung photons colliding with an intense X-ray laser pulse
• Pulse envelope effects in nonlinear Breit-Wheeler pair-creation
• Numerical approach to the semiclassical method of pair production for arbitrary spins and photon polarization
• Helicity transfer in strong laser fields via the electron anomalous magnetic moment
• First-order strong-field QED processes including the damping of particles states
• Stochasticity in radiative polarization of ultrarelativistic electrons in an ultrastrong laser pulse
• Generation of High-Density High-Polarization Positrons via Single-Shot Strong Laser-Foil Interaction
• Spin and polarization effects on the nonlinear Breit-Wheeler pair production in laser-plasma interaction
• Resummation of quantum radiation reaction and induced polarization
• Spin-polarized electron beam generation in the colliding-pulse injection scheme
• Kinetic theory for spin-polarized relativistic plasmas
• Polarized proton acceleration in ultra-intense laser interaction with near critical density plasmas
• Strong signature of one-loop self-energy in polarization resolved nonlinear Compton scattering
• Control of electron beam polarization in the bubble regime of laser-wakefield acceleration
• Laser-driven lepton polarization in the quantum radiation-dominated reflection regime
• Deciphering in situ electron dynamics of ultrarelativistic plasma via polarization pattern of emitted gamma photons
• Generation of Ultrarelativistic Vortex Leptons with Large Orbital Angular Momenta
• Spin-dependent two-photon Bragg scattering in the Kapitza-Dirac effect
• Generation of polarized positron beams via collisions of ultrarelativistic electron beams
• High-order corrections to the radiation-free dynamics of an electron in the strongly radiation-dominated regime
• Beam focus and longitudinal polarization influence on spin dynamics in the Kapitza-Dirac effect
• Polarized QED Cascades over Pulsar Polar Caps
• Suppression of power losses during laser pulse propagation in underdense plasma slab
• Generation of arbitrarily polarized muon pairs via polarized $e^{-}{e}^{+}$ collision
• Plasma acceleration of polarized particle beams
• Novel Signatures of Radiation Reaction in Electron-Laser Sidescattering
• The effect of the electron's spin magnetic moment on quantum radiation in strong electromagnetic fields
• Two-dimensional simulation of the spin-flip in the Kapitza-Dirac effect
• Parameter space investigation for spin-dependent electron diffraction in the Kapitza-Dirac effect
• Intrinsic Nonlocality of Spin- and Polarization-Resolved Probabilities in Strong-Field Quantum Electrodynamics