Stochastic electron gas theory of coherence in laser-driven synchrotron radiation
The transition from coherent to incoherent laser-driven synchrotron radiation is studied within the framework of a stochastic electron gas model. The fundamental difference between this approach and a relativistic fluid model resides in the fact that, for any number of incoherently phased point electrons, the 4-current contains Fourier components at arbitrarily short wavelengths, whereas the fluid model introduces an unphysical cutoff scale.
Hartemann
FV
Institute for Laser Science and Applications, Lawrence Livermore National Laboratory, Livermore, California 94550, USA.