Spontaneous radiation of an electron beam in a free-electron laser with a quadrupole wiggler
- 1 September 1986
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 60 (5) , 1584-1590
- https://doi.org/10.1063/1.337295
Abstract
A calculation is presented of spontaneous radiation emitted by an electron beam passing through a continuously rotating quadrupole magnetic undulator. It is shown that radiation spectrum emitted in forward direction of beam propagation has four peaks, corresponding to four betatron frequencies. Utilizing the Madey theorem, a stimulated emission is calculated and presented as gain versus frequency curves, for different values of the quadrupole magnetic field. A free-electron laser operating at two or three radiation frequencies with a quadrupole magnetic wiggler is suggested.This publication has 15 references indexed in Scilit:
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