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Coaxial configuration of the dielectric Cherenkov maser

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3 Author(s)
E. P. Garate ; Dept. of Phys., California Univ., Irvine, CA, USA ; A. Fisher ; W. G. Main

The linearized Lorentz force, continuity equation, and Maxwell's equations are used to calculate the system dispersion relation for a coaxial configuration of the dielectric Cherenkov maser. The system consists of two coaxial conductors lined with dielectric and an annular relativistic electron beam, which propagates between the two liners. The dispersion relation for the beam and dielectric-lined coaxial waveguide structure and the no-beam system that describes the dependence of the generated frequency on the coaxial waveguide parameters are presented. Using the linearized dispersion relation, the growth rate for the beam-TM0n waveguide mode instability is calculated in the strong-coupling tenuous beam limit

Published in:

IEEE Transactions on Plasma Science  (Volume:18 ,  Issue: 5 )