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Ion acoustic wave pumped free electron laser

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2 Author(s)
R. N. Agarwal ; Opto-Electronics Factory, Dehradun, India ; V. K. Tripathi

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≃2γ020 /csb 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

Published in:

IEEE Transactions on Plasma Science  (Volume:23 ,  Issue: 4 )