NDLI: Research on pulsed high power microwave generation in the 1980s

Content Provider	IEEE Xplore Digital Library
Author	Granatstein, V.L.
Copyright Year	1989
Description	Author affiliation: Lab. for Plasma Res., Maryland Univ., College Park, MD, USA (Granatstein, V.L.)
Abstract	In the study of microwave generation using intense, short pulses of relativistic electrons, a measure of performance is peak power divided by the square of the wavelength (i.e. P/ lambda /sup 2/). This measure has exceeded 1 GW/cm/sup 2/ in several experiments, over a wavelength range from 2 mm to 3 cm. Moreover, these experiments have generally demonstrated high accompanying efficiency in the range 30 to 50%. For lambda >or approximately=1 cm, the highest power and efficiency have been achieved in multiwave Cerenkov generators with large diameter, i.e. D/ lambda >>1. A plasma-filled BWO (backward-wave oscillator) experiment which has shown high efficiency may also be explainable by multiwave effects. At millimeter wavelengths, the most impressive results have been obtained with free electron lasers, that use a tapered wiggler. Both the multiwave effect and the tapered wiggler ensure energy extraction from the electron beam over an extended range as electron energy decreases.<>
Starting Page	367
Ending Page	370
File Size	291563
Page Count	4
File Format	PDF
ISBN	0780308174
ISSN	01631918
DOI	10.1109/IEDM.1989.74299
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-12-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	High power microwave generation Pulse measurements Wavelength measurement Undulators Electron beams Microwave generation Power measurement Microwave measurements Power generation Plasma waves
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Electronic, Optical and Magnetic Materials Condensed Matter Physics Electrical and Electronic Engineering

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Pulsed microwave and millimeter wavelength radiation from the back-lighted thyratron

High-power, single-beam plasma wave tube

Experimental studies of overmoded high power microwave generators

PASOTRON high-energy microwave source

Electron density measurements during microwave generation in a high power backward-wave oscillator

Pulse-shortening observations in large-orbit, coaxial gyrotron high power microwave experiments

Density modulated microwave power devices

Investigation of 7 GHz high power pulsed magnicon amplifier

Measurements of microwave power and frequency in a pulsed free electron laser amplifier

Research on pulsed high power microwave generation in the 1980s

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Electron density measurements during microwave generation in a high power backward-wave oscillator

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Research on pulsed high power microwave generation in the 1980s