Beam Shape Effects in Nonlinear Compton Scattering


Beam Shape Effects in Nonlinear Compton Scattering

Seipt, D.; Heinzl, T.; Kämpfer, B.

The relation of QED-Compton scattering of a high-intensity optical laser off relativistic electrons to Thomson scattering is quantified. This is important both for future technical applications as X-ray sources and background to other nonlinear QED effects (Unruh radiation etc.) The spectral density of scattered photons in the linear and nonlinear regimes is analysed and a scaling relation for the spectral density relating different scattering geometries with each other is derived. In such a way one can easily account for electron beam phase space effects and the line broadening of the spectral density.
In the nonlinear regime (a0~1) with ultrashort (fs) pulses, our analysis predicts a nontrivial sub-peak-structure for the spectral density. We propose experimental parameters to make the observation of the subpeaks feasible.

  • Lecture (Conference)
    The Physics and Applications of High Brightness Electron Beams, 16.-19.11.2009, Kaanapaali, Maui, USA

Permalink: https://www.hzdr.de/publications/Publ-13479
Publ.-Id: 13479