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Title: Electromagnetic radiation by parametric decay of upper hybrid waves in ionospheric modification experiments

Abstract

A nonlinear dispersion relation for the parametric decay of an electrostatic upper hybrid wave into an ordinary mode electromagnetic wave, propagating parallel to the ambient magnetic field, and an electrostatic low frequency wave, being either a lower hybrid wave or a high harmonic ion Bernstein wave, is derived. The coherent and resonant wave interaction is considered to take place in a weakly magnetized and collisionless Vlasov plasma. The instability growth rate is computed for parameter values typical of ionospheric modification experiments, in which a powerful high frequency electromagnetic pump wave is injected into the ionospheric F-region from ground-based transmitters. The electromagnetic radiation which is excited by the decaying upper hybrid wave is found to be consistent with the prominent and commonly observed downshifted maximum (DM) emission in the spectrum of stimulated electromagnetic emission.

Authors:
 [1]
  1. (Swedish Institute of Space Physics, P. O. Box 812, S-98128 Kiruna (Sweden))
Publication Date:
OSTI Identifier:
6685967
Alternate Identifier(s):
OSTI ID: 6685967
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; (United States); Journal Volume: 1:6
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; IONOSPHERE; ELECTROMAGNETIC RADIATION; BERNSTEIN MODE; COLLISIONLESS PLASMA; DISPERSION RELATIONS; F REGION; INSTABILITY GROWTH RATES; KINETIC EQUATIONS; EARTH ATMOSPHERE; EQUATIONS; OSCILLATION MODES; PLANETARY IONOSPHERES; PLASMA; RADIATIONS 700340* -- Plasma Waves, Oscillations, & Instabilities-- (1992-); 700330 -- Plasma Kinetics, Transport, & Impurities-- (1992-); 661320 -- Auroral, Ionospheric, & Magnetospheric Phenomena-- (1992-)

Citation Formats

Leyser, T.B.. Electromagnetic radiation by parametric decay of upper hybrid waves in ionospheric modification experiments. United States: N. p., 1994. Web. doi:10.1063/1.870923.
Leyser, T.B.. Electromagnetic radiation by parametric decay of upper hybrid waves in ionospheric modification experiments. United States. doi:10.1063/1.870923.
Leyser, T.B.. Wed . "Electromagnetic radiation by parametric decay of upper hybrid waves in ionospheric modification experiments". United States. doi:10.1063/1.870923.
@article{osti_6685967,
title = {Electromagnetic radiation by parametric decay of upper hybrid waves in ionospheric modification experiments},
author = {Leyser, T.B.},
abstractNote = {A nonlinear dispersion relation for the parametric decay of an electrostatic upper hybrid wave into an ordinary mode electromagnetic wave, propagating parallel to the ambient magnetic field, and an electrostatic low frequency wave, being either a lower hybrid wave or a high harmonic ion Bernstein wave, is derived. The coherent and resonant wave interaction is considered to take place in a weakly magnetized and collisionless Vlasov plasma. The instability growth rate is computed for parameter values typical of ionospheric modification experiments, in which a powerful high frequency electromagnetic pump wave is injected into the ionospheric F-region from ground-based transmitters. The electromagnetic radiation which is excited by the decaying upper hybrid wave is found to be consistent with the prominent and commonly observed downshifted maximum (DM) emission in the spectrum of stimulated electromagnetic emission.},
doi = {10.1063/1.870923},
journal = {Physics of Plasmas; (United States)},
number = ,
volume = 1:6,
place = {United States},
year = {Wed Jun 01 00:00:00 EDT 1994},
month = {Wed Jun 01 00:00:00 EDT 1994}
}