Radiation reaction in electron–beam interactions with high-intensity lasers

We consider radiation emitted by colour-charged and massive particles crossing strong plane wave backgrounds in gauge theory and gravity. These backgrounds are treated exactly and non-perturbatively throughout. We compute the back-reaction on these fields from the radiation emitted by the probe particles: classically through background-coupled worldline theories, and at tree-level in the quantum theory through three-point amplitudes. Consistency of these two methods is established explicitly. We show that the gauge theory and gravity amplitudes are related by the double copy for amplitudes on plane wave backgrounds. Finally, we demonstrate that in four-dimensions these calculations can be carried out with a background-dressed version of the massive spinor-helicity formalism.

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“…(At higher orders one can identify e.g. radiation-reaction on the electron motion [44][45][46][47][48]. )…”

Section: Jhep09(2020)200 3 Classical Colour Charge Dynamicsmentioning

confidence: 99%

Classical and quantum double copy of back-reaction

Adamo

Ilderton

2020

J. High Energ. Phys.

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“…The state-of-the-art petawatt laser facilities [1][2][3] enable the peak intensity of a short laser pulse to reach 10 23 W/cm 2 , which makes it possible to experimentally explore the exotic quantum electrodynamics phenomena [4][5][6][7][8]. On the other hand, today's particle accelerators, like some electron synchrotrons [9,10] and laserdriven plasma accelerators [11,12], can easily accelerate electrons up to several GeV.…”

Section: Introductionmentioning

confidence: 99%

Radiative polarization dynamics of relativistic electrons in an intense electromagnetic field

Tang

Gong

et al. 2021

Phys. Rev. A

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We propose a self-consistent model which utilizes the polarization vector to theoretically describe the evolution of spin polarization of relativistic electrons in an intense electromagnetic field. The variation of radiative polarization due to instantaneous no photon emission is introduced into our model, which extends the applicability of the polarization vector model derived from the nonlinear Compton scattering under local constant crossed-field approximation to the complex electromagnetic environment in laser plasma interaction. According to this model, we develop a Monte Carlo method to simulate the electron spin under the influence of radiation and precession simultaneously. Our model is consistent with the quantum physical picture that spin can only be described by a probability distribution before measurement, and it contains the entire information on the spin. The correctness of our model is confirmed by the successful reproduction of the Sokolov-Ternov effect and the comparison of the simulation results with other models in the literature. The results show the superiority in accuracy, applicability, and computational efficiency of our model, and we believe that our model is a better choice to deal with the electron spin in particle-in-cell simulation for laser plasma interaction.

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“…It is worth pointing out that these electron bunches hardly see any radiation reaction effects even when . Classical radiation reaction effects becomes strong when the classical radiation reaction parameter and dominate when 30 , where is the relevant parameter for supercritical fields. To consider radiation reaction effects when , one needs .…”

Section: Resultsmentioning

confidence: 99%

Towards isolated attosecond electron bunches using ultrashort-pulse laser-solid interactions

Lin

Batson

Nees

et al. 2020

Sci Rep

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We investigate MeV-level attosecond electron bunches from ultrashort-pulse laser-solid interactions through similarities between experimental and simulated electron energy spectra. We show measurements of the bunch duration and temporal structure from particle-in-cell simulations. The experimental observation of such bunches favors specular reflection direction when focusing the laser pulse onto a subwavelength boundary of thick overdense plasmas at grazing incidence. Particle-in-cell simulation further reveals that the attosecond duration is a result of ultra-thin ($$\sim $$ ∼ tenth of a micron) gaps of zero electromagnetic energy density in the modulated reflected radiation, while the bunching (locally peaked electron concentration) comes from the highly-directional electron angular distribution acquired by the electrons in a grazing incidence setup. To isolate a single electron bunch, we perform simulations using 1-cycle laser pulses and analyze the effect of carrier-envelop phase with particle tracking. The duration of the electron bunch can be further decreased by increasing the laser intensity and the focal spot size, while its direction can be changed by tuning the preplasma density gradient.

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Radiation reaction in electron–beam interactions with high-intensity lasers

Cited by 121 publications

References 180 publications

Classical and quantum double copy of back-reaction

Classical and quantum double copy of back-reaction

Radiative polarization dynamics of relativistic electrons in an intense electromagnetic field

Towards isolated attosecond electron bunches using ultrashort-pulse laser-solid interactions

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