Spin-dependent radiative deflection in the quantum radiation-reaction regime

X S Geng; L L Ji; B F Shen; B Feng; Z Guo; Q Q Han; C Y Qin; N W Wang; W Q Wang; Y T Wu; X Yan; Q Yu; L G Zhang; Z Z Xu

doi:10.1088/1367-2630/ab623b

New Journal of Physics (Jan 2020)

Spin-dependent radiative deflection in the quantum radiation-reaction regime

X S Geng,
L L Ji,
B F Shen,
B Feng,
Z Guo,
Q Q Han,
C Y Qin,
N W Wang,
W Q Wang,
Y T Wu,
X Yan,
Q Yu,
L G Zhang,
Z Z Xu

Affiliations

X S Geng: ORCiD; State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China; University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of China
L L Ji: ORCiD; State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China; Center for Excellence in Ultra-intense Laser Science, Chinese Academy of Sciences Shanghai 201800, People’s Republic of China
B F Shen: ORCiD; State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China; Center for Excellence in Ultra-intense Laser Science, Chinese Academy of Sciences Shanghai 201800, People’s Republic of China; Shanghai Normal University , Shanghai 200234, People’s Republic of China
B Feng: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China; University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of China
Z Guo: ORCiD; State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China; University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of China
Q Q Han: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China; University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of China
C Y Qin: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China; University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of China
N W Wang: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China
W Q Wang: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China; University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of China
Y T Wu: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China; University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of China
X Yan: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China; University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of China
Q Yu: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China; University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of China
L G Zhang: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China
Z Z Xu: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China

DOI: https://doi.org/10.1088/1367-2630/ab623b
Journal volume & issue: Vol. 22, no. 1
p. 013007

Abstract

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A new spin-dependent deflection mechanism is revealed by considering the spin-correlated radiation-reaction force during laser-electron collision. We found that such deflection originates from the non-zero work done by the radiation-reaction force along the laser polarization direction in each half-period, which is larger/smaller for spin-anti-paralleled/spin-paralleled electrons. The resulted anti-symmetric deflection is further accumulated when the spin-projection onto the laser magnetic field is reversed in adjacent half-periods. The discovered mechanism dominates over the Stern–Gerlach deflection for electrons of several hundreds of MeV and 10 PW-level laser peak power. The results provide a new perspective to study the strong-field QED physics in quantum radiation-reaction regime and an approach to leverage the study of radiation-dominated and strong-field QED physics via particle spins.

Published in New Journal of Physics

ISSN: 1367-2630 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Physics
Website: https://iopscience.iop.org/journal/1367-2630

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