Attosecond Gamma-Ray Pulses via Nonlinear Compton Scattering in the Radiation-Dominated Regime

Li, Jiang-Xing; Hatsagortsyan, Karen Z.; Galow, Benjamin J.; Keitel, Christoph H.

doi:10.1103/physrevlett.115.204801

Cited by 56 publications

(43 citation statements)

References 40 publications

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“…With rapid developments of strong laser techniques, stable (energy fluctuation ∼ 1%) ultrashort ultraintense laser pulses can reach peak intensities of scale of 10 22 W/cm 2 with a duration of about tens of femtoseconds [29][30][31][32][33][34], opening new ways to generate high-energy high-flux γ-rays [35][36][37][38][39][40] in the nonlinear regime of Compton scattering [41][42][43][44]. Moderately polarized γ-photons have been predicted in strong fields in an electron-spin-averaged treatment [10,45,46].…”

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confidence: 99%

Polarized Ultrashort Brilliant Multi-GeV γ Rays via Single-Shot Laser-Electron Interaction

Shaisultanov

Chen

et al. 2020

Phys. Rev. Lett.

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Generation of circularly-polarized (CP) and linearly-polarized (LP) γ-rays via the single-shot interaction of an ultraintense laser pulse with a spin-polarized counterpropagating ultrarelativistic electron beam has been investigated in nonlinear Compton scattering in the quantum radiation-dominated regime. For the process simulation a Monte Carlo method is developed which employs the electron-spin-resolved probabilities for polarized photon emissions. We show efficient ways for the transfer of the electron polarization to the high-energy photon polarization. In particular, multi-GeV CP (LP) γ-rays with polarization of up to about 90% (95%) can be generated by a longitudinally (transversely) spin-polarized electron beam, with a photon flux at a single shot meeting the requirements of recent proposals for the vacuum birefringence measurement in ultrastrong laser fields. Such high-energy, high-brilliance, high-polarization γ-rays are also beneficial for other applications in high-energy physics, nuclear physics, and laboratory astrophysics.

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confidence: 99%

Polarized Ultrashort Brilliant Multi-GeV γ Rays via Single-Shot Laser-Electron Interaction

Shaisultanov

Chen

et al. 2020

Phys. Rev. Lett.

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“…The average electron charge is ∼25 pC with energy above 40 MeV and the electron spectrum after spectrometer also stays relatively stable which can be accelerated to ∼180 MeV. The high energy electrons are critical to generate the gamma-ray pulses for ultrafast nuclear dynamics research [24]. Thus, our method is unique and indispensable for steering the highenergy wakefield-accelerated electron beams.…”

Section: Resultsmentioning

confidence: 99%

Optical steering of electron beam in laser plasma accelerators

Zhu

Wang

et al. 2020

Opt. Express

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By using Dazzler system and tilting compressor grating, we provide an effective way of using the laser group delay dispersion (GDD) to continuously steer the high energy electron beam which is accelerated by asymmetric laser-wakefield. The deviation angle of electrons is as the same as the angular chirped laser pulse from its initial optical axis, which is determined by the laser pulse-front-tilt (PFT). This unique method can be continuously used to control over the pointing direction of electron-pulses to the requisite trajectories, especially for the alignment sensitive devices such as electron-positron collider or undulator. Besides, the effect of PFT on the qualities of electron beam has been investigated.

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“…We assume that the electron Lorentz factor γ?a(f), where a(f)=eE(f)/(m ω 0 ), the local value of the normalised electric field E at phase f, at least up to the point where its quantum parameter is maximised. This occurs before the electron has undergone substantial energy losses, after which ponderomotive forces can eject the electron from the laser pulse at large angle [41], and our assumption that the trajectory is ballistic breaks down.…”

Section: Scaling Lawmentioning

confidence: 99%

Reaching supercritical field strengths with intense lasers

et al. 2019

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It is conjectured that all perturbative approaches to quantum electrodynamics (QED) break down in the collision of a high-energy electron beam with an intense laser, when the laser fields are boosted to 'supercritical' strengths far greater than the critical field of QED. As field strengths increase toward this regime, cascades of photon emission and electron-positron pair creation are expected, as well as the onset of substantial radiative corrections. Here we identify the important role played by the collision angle in mitigating energy losses to photon emission that would otherwise prevent the electrons reaching the supercritical regime. We show that a collision between an electron beam with energy in the tens of GeV and a laser pulse of intensity -10 W cm 24 2 at oblique, or even normal, incidence is a viable platform for studying the breakdown of perturbative strong-field QED. Our results have implications for the design of near-term experiments as they predict that certain quantum effects are enhanced at oblique incidence.

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Attosecond Gamma-Ray Pulses via Nonlinear Compton Scattering in the Radiation-Dominated Regime

Cited by 56 publications

References 40 publications

Polarized Ultrashort Brilliant Multi-GeV γ Rays via Single-Shot Laser-Electron Interaction

Polarized Ultrashort Brilliant Multi-GeV γ Rays via Single-Shot Laser-Electron Interaction

Optical steering of electron beam in laser plasma accelerators

Reaching supercritical field strengths with intense lasers

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