ELECTROMAGNETIC-WAVE AMPLIFICATION OF CYCLOTRON CHERENKOV MASER

We use the Vlasov-Maxwell equations to investigate the kinetic instability caused by the interaction of the electron beam with the electromagnetic wave in small signal limit. The orthogonality condition of the electromagnetic modes has been used to derive the dispersion relation for the dielectric-loaded cylindrical waveguide driven by a relativistic electron beam when a constant guiding magnetic field is applied. When the guiding field is not so strong, there arises cyclotron Cherenkov instability as well as Cherenkov instability. We show that the cyclotron Cherenkov instability has a growth rate comparable to that of the Cherenkov instability, and the amplification of an electromagnetic wave is possible in the range of millimeter to sub-millimeter arising from the anomalous Doppler effect.
Publisher
ELSEVIER SCIENCE BV
Issue Date
1992-12
Language
ENG
Keywords

CERENKOV MASER; ELECTRON-BEAM; INSTABILITIES

Citation

OPTICS COMMUNICATIONS, v.94, no.6, pp.530 - 536

ISSN
0030-4018
DOI
10.1016/0030-4018(92)90600-V
URI
http://hdl.handle.net/10203/59944
Appears in Collection
PH-Journal Papers(저널논문)
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