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Title: Ultrafast polarization of an electron beam in an intense bichromatic laser field

Abstract

In this work, we demonstrate the radiative polarization of high-energy electron beams in collisions with ultrashort pulsed bichromatic laser fields. Employing a Boltzmann kinetic approach for the electron distribution allows us to simulate the beam polarization over a wide range of parameters and determine the optimum conditions for maximum radiative polarization. Those results are contrasted with a Monte Carlo algorithm where photon emission and associated spin effects are treated fully quantum mechanically using spin-dependent photon emission rates. The latter method includes realistic focusing laser fields, which allows us to simulate a near-term experimentally feasible scenario of an 8 GeV electron beam scattering from a 1 PW laser pulse and provide a measurement that would verify the ultrafast radiative polarization in high-intensity laser pulses that we predict. Aspects of spin-dependent radiation reaction are also discussed, with spin polarization leading to a measurable (5%) splitting of the energies of spin-up and spin-down electrons.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [1]
  1. Univ. of Michigan, Ann Arbor, MI (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Univ. of York (United Kindom)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE; US Army Research Office (ARO); Engineering and Physical Sciences Research Council (EPSRC)
OSTI Identifier:
1594529
Grant/Contract Number:  
W911NF-16-1-0044; AC02-76SF00515; EP/M018156/1
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 100; Journal Issue: 6; Journal ID: ISSN 2469-9926
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; beam polarization; high intensity laser-plasma interactions; radiation & particle generation in plasmas; polarization; spin; Monte Carlo methods

Citation Formats

Seipt, Daniel, Del Sorbo, Dario, Ridgers, Christopher P., and Thomas, Alec G. R.. Ultrafast polarization of an electron beam in an intense bichromatic laser field. United States: N. p., 2019. Web. https://doi.org/10.1103/PhysRevA.100.061402.
Seipt, Daniel, Del Sorbo, Dario, Ridgers, Christopher P., & Thomas, Alec G. R.. Ultrafast polarization of an electron beam in an intense bichromatic laser field. United States. https://doi.org/10.1103/PhysRevA.100.061402
Seipt, Daniel, Del Sorbo, Dario, Ridgers, Christopher P., and Thomas, Alec G. R.. Wed . "Ultrafast polarization of an electron beam in an intense bichromatic laser field". United States. https://doi.org/10.1103/PhysRevA.100.061402. https://www.osti.gov/servlets/purl/1594529.
@article{osti_1594529,
title = {Ultrafast polarization of an electron beam in an intense bichromatic laser field},
author = {Seipt, Daniel and Del Sorbo, Dario and Ridgers, Christopher P. and Thomas, Alec G. R.},
abstractNote = {In this work, we demonstrate the radiative polarization of high-energy electron beams in collisions with ultrashort pulsed bichromatic laser fields. Employing a Boltzmann kinetic approach for the electron distribution allows us to simulate the beam polarization over a wide range of parameters and determine the optimum conditions for maximum radiative polarization. Those results are contrasted with a Monte Carlo algorithm where photon emission and associated spin effects are treated fully quantum mechanically using spin-dependent photon emission rates. The latter method includes realistic focusing laser fields, which allows us to simulate a near-term experimentally feasible scenario of an 8 GeV electron beam scattering from a 1 PW laser pulse and provide a measurement that would verify the ultrafast radiative polarization in high-intensity laser pulses that we predict. Aspects of spin-dependent radiation reaction are also discussed, with spin polarization leading to a measurable (5%) splitting of the energies of spin-up and spin-down electrons.},
doi = {10.1103/PhysRevA.100.061402},
journal = {Physical Review A},
number = 6,
volume = 100,
place = {United States},
year = {2019},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 5 works
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    Works referencing / citing this record:

    Scaling laws for the depolarization time of relativistic particle beams in strong fields
    journal, June 2020


    Mapping electromagnetic fields structure in plasma using a spin polarized electron beam
    journal, December 2019

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