Cyclotron resonance maser with a tapered magnetic field in the regime of "nonresonant" trapping of the electron beam.
A different version of the regime of electron trapping is proposed for electron microwave amplifiers. The use of this regime in a cyclotron resonance maser with a weakly relativistic electron beam can simultaneously provide efficiency as high as 50%, a very broad (tens of percent) frequency band, and very weak sensitivity to the spread in electron velocity.
Savilov
A V
AV
Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov Street, Nizhny Novgorod, 603950, Russian Federation. savilov@appl.sci-nnov.ru