Hybrid plasma-beam generators of stochastic microwave oscillations

Leonid A. Mitin; Vladimir I. Perevodchikov; A. L. Shapiro; M. A. Zavjalov

doi:10.1117/12.218543

8 September 1995 Hybrid plasma-beam generators of stochastic microwave oscillations

Leonid A. Mitin, Vladimir I. Perevodchikov, A. L. Shapiro, M. A. Zavjalov

Proceedings Volume 2557, Intense Microwave Pulses III; (1995) https://doi.org/10.1117/12.218543
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Plasma-beam generators of microwave oscillation, based on hybrid plasma-beam amplifiers with inertial back coupling have been created. The experimental research shows that this device generates wideband stochastic oscillations with E-efficiency up to 40%. The theoretical and experimental investigations of dynamics of transition to stochastic regime has been carried out. It shows that phase mechanism of stochastization allowed to generate microwave oscillations with the nonequality of frequency spectrum about 3 db and spectrum width up to 30%. Possibility of operating to spectrum characteristic by a small input signal has been considered. Compression of spectrum near the operating frequency has been obtained experimentally. The width of compressed spectrum is about 10-0.1% depending on power of input signal. The central frequency of the compressed spectrum corresponds to the operating signal frequency and may be changed in wideband following the changing of operating frequency. Utilization of plasma-beam generators for fusion and plasma-chemical devices plasma heating in the region of low-hybrid resonance is theoretically considered. It is shown that the rate of heating is proportional to spectrum width.

Citation Download Citation

Leonid A. Mitin, Vladimir I. Perevodchikov, A. L. Shapiro, and M. A. Zavjalov "Hybrid plasma-beam generators of stochastic microwave oscillations", Proc. SPIE 2557, Intense Microwave Pulses III, (8 September 1995); https://doi.org/10.1117/12.218543

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