Title :
A free-electron laser with an electron ring and electromagnetic pumping wave
Author_Institution :
Inst. of Electron., Acad. Sinica, Beijing, China
fDate :
1/1/1992 12:00:00 AM
Abstract :
A free-electron laser with an electron ring and electromagnetic pumping wave is studied. The drifting and rotating electron ring of a large radius comes from the magnetic cusp and goes through a cylindrical waveguide interacting with the TE mode of the waveguide. By making use of the Vlasov distribution theory and a three-dimensional wave equation, the dispersion relation of the scattered wave in the Compton region is deduced. In the numerical analysis, the growth rate and radiation frequency of the scattered wave as a function of the guided magnetic field, electron beam energy, electron rotating ratio, and radial position of the electron ring are discussed
Keywords :
free electron lasers; laser modes; Compton region; TE mode; Vlasov distribution theory; cylindrical waveguide; dispersion relation; drifting electron ring; electromagnetic pumping wave; electron beam energy; electron rotating ratio; free-electron laser; growth rate; guided magnetic field; magnetic cusp; numerical analysis; radial position; radiation frequency; rotating electron ring; scattered wave; three-dimensional wave equation; transverse electric mode; Electromagnetic scattering; Electromagnetic waveguides; Electron beams; Free electron lasers; Laser excitation; Laser modes; Laser theory; Pump lasers; Ring lasers; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
