TITLE

Waveguide mode deformation in free-electron lasers

AUTHOR(S)
Fajans, J.; Wurtele, J. S.
PUB. DATE
October 1989
SOURCE
Physics of Fluids B: Plasma Physics;Oct89, Vol. 1 Issue 10, p2073
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The free-electron laser (FEL)-induced modifications to the vacuum waveguide modes are calculated for low-frequency FEL’s. Typically, the mode modifications are large and exhibit complicated axial behaviors. In addition to the wave component with a near vacuum wavenumber, components at two upshifted wavenumbers must be analyzed. Electron beam surface charges and currents are also important. At low gain, effects from all three roots of the FEL dispersion relation must be included. The dominant modification is due to the electron beam space-charge wave.
ACCESSION #
9830775

 

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