Radiation back-reaction in relativistically strong and QED-strong pulsed laser fields

摘要

We analyze the interactions of super-strong laser fields with an electron and with plasma electrons. An efficient conversion of incident radiation to 'y-ray emission is predicted by numerical simulations for intensities of 10~(22)W/cm~2, recently achieved in experiments. At larger intensities the emission from counter-propagating electrons is modified by the effects of Quantum ElectroDynamics (QED), as long as the electron energy is sufficiently high: E > 1 GeV. The radiation force experienced by an electron is for the first time derived from QED principles and its applicability range is extended towards QED-strong fields.