M. Korol et E. Jerby, QUASI-ANOMALOUS DOPPLER-EFFECT IN A PERIODIC-WAVE-GUIDE CYCLOTRON MASER, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 375(1-3), 1996, pp. 222-225
The quasi-anomalous Doppler effect is proposed in this paper as a new
operating regime for cyclotron-resonance masers (CRMs). It combines fe
atures of the known normal and anomalous Doppler effects. A linear ana
lysis of the CRM interaction shows that the quasi-anomalous Doppler ef
fect may occur with fast em waves in inductive (low-impedance) periodi
c waveguides, and that it may produce gain without an initial rotation
of the electron beam. A practical scheme of a slotted-waveguide CRM o
perating in the high frequency passband is proposed for a future exper
iment.