High-power microwave generation by excitation of a plasma-filled rippled boundary resonator
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Date
1990-06Author
Carmel, Yuval
Minami, K.
Lou, Weiran
Kehs, R.
Destler, William
Granatstein, Victor
Abe, D.
Rodgers, J.
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Show full item recordAbstract
An experimental demonstration of a strong enhancement
of the interaction efficiency in a high-power relativistic backward-wave
oscillator when plasma is injected is presented. Controlled plasma injection
enhances the interaction efficiency over the vacuum case by a
factor of up to 8 to a value of about 40%. A linear theory of electromagnetic
wave generation in plasma-loaded corrugated wall resonators
is reviewed. A number of physical mechanisms are considered to account
for the enhanced interaction, including two variations of a threewave
interaction involving the electron-heam slow space-charge wave,
the slow electromagnetic waves in the structure, and the quasi-electrostatic
waves in the plasma.
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