Research output: Contribution to journal › Article › peer-review
Ultrafast polarization of an electron beam in an intense bichromatic laser field. / Seipt, Daniel; Del Sorbo, Dario; Ridgers, Christopher P.; Thomas, A. G.R.
In: Physical Review A, Vol. 100, No. 6, 061402, 04.12.2019.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Ultrafast polarization of an electron beam in an intense bichromatic laser field
AU - Seipt, Daniel
AU - Del Sorbo, Dario
AU - Ridgers, Christopher P.
AU - Thomas, A. G.R.
N1 - ©2019 American Physical Society. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details
PY - 2019/12/4
Y1 - 2019/12/4
N2 - Here, 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.
AB - Here, 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.
UR - http://www.scopus.com/inward/record.url?scp=85076895716&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.100.061402
DO - 10.1103/PhysRevA.100.061402
M3 - Article
AN - SCOPUS:85076895716
VL - 100
JO - Physical Review A
JF - Physical Review A
SN - 1050-2947
IS - 6
M1 - 061402
ER -