Publication:
Plasma wave observations during electron beam experiments at high altitudes

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Authors
Olsen, R.C.
Lowery, D.R.
Roeder, J.L.
Subjects
ELECTRON BEAMS
GYROFREQUENCY
PLASMA WAVES
SPACE PLASMAS
SPACECRAFT CHARGING
ELECTRON GUNS
PLASMA HEATING
SATELLITE SOUNDING
Advisors
Date of Issue
1989-12
Date
Dec 01, 1989
Publisher
Language
Abstract
Electron beam experiments on the nearly geosynchronous P78-2 satellite conducted in 1979 resulted in observations of intense radiation near the local electron gyrofrequency. These signals resembled naturally occurring f(ce) waves during the same period. The amplitude of the simulated waves depended upon beam parameters. During 50-eV beam operations, current levels of 10 microamps produced strong emissions. Current levels of 1 microamp and 100 microamps did not. These emissions correspond in time to previously reported observations of electron distributions, which suggest heating of the local thermal plasma. Sufficient power is in the observed emissions to explain some aspects of the heated electron distributions observed during the experiments.
Type
Article
Description
Series/Report No
Department
Other Units
Unspecified Center
Identifiers
NPS Report Number
Sponsors
Funder
F04701-85-C-0086
Format
Citation
Journal of Geophysical Research; p. 17267-17; (ISSN 0148-0227); 94
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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