Self-consistent plasma motion as a possible mechanism of the power limitation and the pulse shortening in the plasma-filled TWT devices

Yury P. Bliokh; Ya. B. Fainberg; M. Lyubarsky; V. O. Podobinsky

doi:10.1117/12.284012

3 October 1997 Self-consistent plasma motion as a possible mechanism of the power limitation and the pulse shortening in the plasma-filled TWT devices

Yury P. Bliokh, Ya. B. Fainberg, M. Lyubarsky, V. O. Podobinsky

Author Affiliations +

Proceedings Volume 3158, Intense Microwave Pulses V; (1997) https://doi.org/10.1117/12.284012
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Plasma motion in TWT-like microwave devices with slow wave structures filled by plasma (hybrid structures) is considered. The reason of plasma motion is high frequency pressure force caused by microwave excited by electron beam. Redistribution of a plasma density changes microwave excitation conditions and the self-consistent dynamics of plasma and excited microwaves appears in this way. This connection between plasma and microwave amplitude distributions can be a reason of power limitation. If the beam current is large enough, nonstationary regime of beam- wave interaction arises. Microwave generation in this case has the form of short pulses sequence. Conditions of nonstationary regimes of microwave radiation and its connection with hybrid structures properties were obtained. Influence of self-consistent plasma motion on TWT-device spectral and energy characteristics is investigated.

Citation Download Citation

Yury P. Bliokh, Ya. B. Fainberg, M. Lyubarsky, and V. O. Podobinsky "Self-consistent plasma motion as a possible mechanism of the power limitation and the pulse shortening in the plasma-filled TWT devices", Proc. SPIE 3158, Intense Microwave Pulses V, (3 October 1997); https://doi.org/10.1117/12.284012

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