Effect of velocity spread on finitelength free electron laser gain
Abstract
A theory of general stimulated backscattering by a hot, relativistic electron beam propagating through a spatially periodic, transverse magnetostatic field is presented. The electrons are chosen to have a Lorentzian distribution in velocity space. Though energy spread acts to diminish gain, its effect is negligible if ∆γ/γ < < N_{1}, where N is the number of undulator periods. The analysis is linear and applicable to both the singleparticle and collective regimes.
 Publication:

International Journal of Infrared and Millimeter Waves
 Pub Date:
 November 1983
 DOI:
 10.1007/BF01009325
 Bibcode:
 1983IJIMW...4.1015M
 Keywords:

 Free Electron Lasers;
 Laser Outputs;
 Power Gain;
 Relativistic Electron Beams;
 Electromagnetic Scattering;
 Relativistic Velocity;
 Lasers and Masers