Robust Signatures of Quantum Radiation Reaction in Focused Ultrashort Laser Pulses

Jian-Xing Li, Karen Z. Hatsagortsyan, and Christoph H. Keitel
Phys. Rev. Lett. 113, 044801 – Published 23 July 2014
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Abstract

Radiation-reaction effects in the interaction of an electron bunch with a superstrong focused ultrashort laser pulse are investigated in the quantum radiation-dominated regime. The angle-resolved Compton scattering spectra are calculated in laser pulses of variable duration using a semiclassical description for the radiation-dominated dynamics and a full quantum treatment for the emitted radiation. In dependence of the laser-pulse duration we find signatures of quantum radiation reaction in the radiation spectra, which are characteristic for the focused laser beam and visible in the qualitative behavior of both the angular spread and the spectral bandwidth of the radiation spectra. The signatures are robust with respect to the variation of the electron and laser-beam parameters in a large range. Qualitatively, they differ fully from those in the classical radiation-reaction regime and are measurable with presently available laser technology.

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  • Received 15 May 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.044801

© 2014 American Physical Society

Authors & Affiliations

Jian-Xing Li*, Karen Z. Hatsagortsyan, and Christoph H. Keitel

  • Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69029 Heidelberg, Germany

  • *Jian-Xing.Li@mpi-hd.mpg.de
  • k.hatsagortsyan@mpi-hd.mpg.de
  • keitel@mpi-hd.mpg.de

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Issue

Vol. 113, Iss. 4 — 25 July 2014

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