Mechanism of Microwave Pulse Shortening in the Relativistic Backward Wave Oscillator

Abstract

Spontaneous pulse shortening occurring in the relativistic backward wave oscillator (BWO) at gigawatt power levels is studied experimentally and theoretically. It is experimentally demonstrated that this phenomenon is accompanied by formation of explosive-emission plasma at the surface of a corrugated slow-wave structure. Termination of microwave emission is explained in terms of the increase of the BWO starting current due to the absorption of the operating electromagnetic wave by electrons emitted from the plasma while the intensity of absorption radically increases owing to the presence of positive ions emitted from the plasma. Application of oil-free vacuum and electrochemical polishing of the SWS surface in an X-band BWO allowed generation of 3-GW, 26-ns microwave pulses with an energy of ∼80 J, thereby demonstrating pulse lengthening with a factor of four.

Original language	English
Journal	Journal of Communications Technology and Electronics
Volume	45
Issue number	SUPPL. 1
Publication status	Published - 2000
Externally published	Yes

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering

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Korovin, S. D., Mesyats, G. A., Pegel, I. V., Polevin, S. D., & Tarakanov, V. P. (2000). Mechanism of Microwave Pulse Shortening in the Relativistic Backward Wave Oscillator. Journal of Communications Technology and Electronics, 45(SUPPL. 1).

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abstract = "Spontaneous pulse shortening occurring in the relativistic backward wave oscillator (BWO) at gigawatt power levels is studied experimentally and theoretically. It is experimentally demonstrated that this phenomenon is accompanied by formation of explosive-emission plasma at the surface of a corrugated slow-wave structure. Termination of microwave emission is explained in terms of the increase of the BWO starting current due to the absorption of the operating electromagnetic wave by electrons emitted from the plasma while the intensity of absorption radically increases owing to the presence of positive ions emitted from the plasma. Application of oil-free vacuum and electrochemical polishing of the SWS surface in an X-band BWO allowed generation of 3-GW, 26-ns microwave pulses with an energy of ∼80 J, thereby demonstrating pulse lengthening with a factor of four.",

author = "Korovin, {S. D.} and Mesyats, {G. A.} and Pegel, {I. V.} and Polevin, {S. D.} and Tarakanov, {V. P.}",

year = "2000",

language = "English",

volume = "45",

journal = "Journal of Communications Technology and Electronics",

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T1 - Mechanism of Microwave Pulse Shortening in the Relativistic Backward Wave Oscillator

AU - Korovin, S. D.

AU - Mesyats, G. A.

AU - Pegel, I. V.

AU - Polevin, S. D.

AU - Tarakanov, V. P.

PY - 2000

Y1 - 2000

N2 - Spontaneous pulse shortening occurring in the relativistic backward wave oscillator (BWO) at gigawatt power levels is studied experimentally and theoretically. It is experimentally demonstrated that this phenomenon is accompanied by formation of explosive-emission plasma at the surface of a corrugated slow-wave structure. Termination of microwave emission is explained in terms of the increase of the BWO starting current due to the absorption of the operating electromagnetic wave by electrons emitted from the plasma while the intensity of absorption radically increases owing to the presence of positive ions emitted from the plasma. Application of oil-free vacuum and electrochemical polishing of the SWS surface in an X-band BWO allowed generation of 3-GW, 26-ns microwave pulses with an energy of ∼80 J, thereby demonstrating pulse lengthening with a factor of four.

AB - Spontaneous pulse shortening occurring in the relativistic backward wave oscillator (BWO) at gigawatt power levels is studied experimentally and theoretically. It is experimentally demonstrated that this phenomenon is accompanied by formation of explosive-emission plasma at the surface of a corrugated slow-wave structure. Termination of microwave emission is explained in terms of the increase of the BWO starting current due to the absorption of the operating electromagnetic wave by electrons emitted from the plasma while the intensity of absorption radically increases owing to the presence of positive ions emitted from the plasma. Application of oil-free vacuum and electrochemical polishing of the SWS surface in an X-band BWO allowed generation of 3-GW, 26-ns microwave pulses with an energy of ∼80 J, thereby demonstrating pulse lengthening with a factor of four.

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