Attosecond gamma-ray pulses via nonlinear Compton scattering in the radiation dominated regime

Abstract

The feasibility of generation of bright ultrashort gamma-ray pulses is demonstrated in the interaction of a relativistic electron bunch with a counterpropagating tightly-focused superstrong laser beam in the radiation dominated regime. The Compton scattering spectra of gamma-radiation are investigated using a semiclassical description for the electron dynamics in the laser field and a quantum electrodynamical description for the photon emission. We demonstrate the feasibility of ultrashort gamma-ray bursts of hundreds of attoseconds and of dozens of megaelectronvolt photon energies in the near-backwards direction of the initial electron motion. The tightly focused laser field structure and radiation reaction are shown to be responsible for such short gamma-ray bursts which are independent of the durations of the electron bunch and of the laser pulse. The results are measurable with the laser technology available in a near-future.

References in corpus (9)

• All-optical Compton gamma-ray source
• QED cascades induced by circularly polarized laser fields
• Ultra-high brilliance multi-MeV $\gamma$-ray beam from non-linear Thomson scattering
• Quantum radiation reaction effects in multiphoton Compton scattering
• Quantum radiation reaction in laser-electron beam collisions
• Pair Creation in QED-Strong Pulsed Laser Fields Interacting with Electron Beams
• Strong signatures of radiation reaction below the radiation dominated regime
• Emission and its back-reaction accompanying electron motion in relativistically strong and QED-strong pulsed laser fields
• Robust signatures of quantum radiation reaction in focused ultrashort laser pulses

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• First-order strong-field QED processes in a tightly focused laser beam
• Signature of Collective Plasma Effects in Beam-Driven QED Cascades
• Focussing effects in laser-electron Thomson scattering
• All-optical nonlinear Breit-Wheeler pair production with $\gamma$-flash photons
• WKB Electron Wave Functions in a Tightly Focused Laser Beam
• Narrowing of the emission angle in high-intensity Compton scattering
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• Electron-Angular-Distribution Reshaping in Quantum Radiation-Dominated Regime
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• Electromagnetic fields of an ultra-short tightly-focused radially-polarized laser pulse
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• Steering of high energy electron beam in laser plasma accelerators
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