A study of the frequency spectrum oscillating phenomenon of a free electron laser amplifier
Abstract
In this paper, on the basis of a singleparticle model, the dispersion equation for FEL amplification (FELA) is obtained by considering the effect of a firstorder perturbation of the relativistic energy factor. The results show that the frequency spectrum of an FELA exhibits an oscillating phenomenon when the incident electron energy is sufficiently large. The origin of this phenomenon is attributed to the perturbing effect of the relativistic energy factor. A detailed discussion is given.
 Publication:

Acta Physica Sinica
 Pub Date:
 December 1986
 Bibcode:
 1986AcPSn..35R.792J
 Keywords:

 Free Electron Lasers;
 Frequency Response;
 Relativistic Electron Beams;
 Wave Dispersion;
 Electron Energy;
 Perturbation Theory;
 Lasers and Masers