Cyclotron effects in relativistic backward wave oscillators

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:153825

Vlasov, A ^[1]; Levush, B; Antonsen, T Jr; Miller, S; Nusinovich, G ^[2]; Bromborsky, A ^[3]

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1. Moscow State Univ. (Russian Federation)
2. Univ. of Maryland, College Park, MD (United States). Inst. for Plasma Research
3. Army Research Lab., Adelphi, MD (United States)

The operation of high power Cherenkov devices such as Backward Wave Oscillators is based on the interaction of high current, relativistic electron beams with synchronous electromagnetic fields of periodically corrugated waveguides. The high current electron beam is guided by a strong axial magnetic field. Therefore, in addition to the Cherenkov synchronism, the cyclotron resonance conditions can be realized for different spatial harmonics of both forward and backward waves. The cyclotron interaction manifests itself in the output power dependence on the axial focusing magnetic field. The authors developed linear and non-linear theories that predict this dependence and the results from the numerical modeling compared favorably with the existing experimental data. The authors also found that the combined Cherenkov and cyclotron interaction may result in a higher efficiency conversion of the electron beam energy into radiation.

• OSTI ID: 153825
• Report Number(s): CONF-950612--; ISBN 0-7803-2669-5
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
BACKWARD WAVE TUBES
CYCLOTRON RESONANCE
MATHEMATICAL MODELS
NONLINEAR PROBLEMS
PERFORMANCE
RELATIVISTIC RANGE