Helicity Transfer in Strong Laser Fields via the Electron Anomalous Magnetic Moment
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Helicity Transfer in Strong Laser Fields via the Electron Anomalous Magnetic Moment
- 发表刊物：
- Physical Review Letters
- 摘要：
- Electron beam longitudinal polarization during the interaction with counterpropagating circularly
polarized ultraintense laser pulses is investigated, while accounting for the anomalous magnetic moment of
the electron. Although it is known that the helicity transfer from the laser photons to the electron beam is
suppressed in linear and nonlinear Compton scattering processes, we show that the helicity transfer
nevertheless can happen via an intermediate step of the electron radiative transverse polarization, phase
matched with the driving field, followed up by spin rotation into the longitudinal direction as induced by
the anomalous magnetic moment of the electron. With spin-resolved QED Monte Carlo simulations, we
demonstrate the consequent helicity transfer from laser photons to the electron beam with a degree up to
10%, along with an electron radial polarization up to 65% after multiple photon emissions in a femtosecond
timescale. This effect is detectable with currently achievable laser facilities, evidencing the role of the
leading QED vertex correction to the electron anomalous magnetic moment in the polarization dynamics in
ultrastrong laser fields.
- 合写作者：
- Yan-Fei Li , Yue-Yue Chen, Karen Z. Hatsagortsyan, Christoph H. Keitel
- 卷号：
- 128
- 页面范围：
- 174801
- 是否译文：
- 否
- 发表时间：
- 2022-04-27