Title :
Ion acoustic wave pumped free electron laser
Author :
Agarwal, R.N. ; Tripathi, V.K.
Author_Institution :
Opto-Electronics Factory, Dehradun, India
fDate :
8/1/1995 12:00:00 AM
Abstract :
A large amplitude ion acoustic wave has potential as a wiggler to produce short wavelength coherent electromagnetic radiation in a free electron laser (FEL). The frequency of radiation is given as ω1≃2γ02(ω0 /cs)νb cos θ0, where γ0 is the relativistic gamma factor, ω0 is the frequency of the ion acoustic wave propagating at angle θ0 with the electron beam and c s is the sound speed. The growth time of the instability at 10 μm turns out to be in the submicrosecond range at beam voltage ~1 MV and beam current ≈1.5 A
Keywords :
free electron lasers; plasma ion acoustic waves; plasma waves; wigglers; 1 MV; 1.5 A; 10 micrometre; electron beam; instability growth time; ion acoustic wave pumped free electron laser; large amplitude ion acoustic wave; radiation frequency; relativistic gamma factor; short wavelength coherent electromagnetic radiation; wiggler; Acoustic beams; Acoustic propagation; Acoustic waves; Electromagnetic radiation; Electron beams; Free electron lasers; Frequency; Laser excitation; Pump lasers; Undulators;
Journal_Title :
Plasma Science, IEEE Transactions on
