Packets of cyclotron waves induced by electron beam injection from the Space Shuttle. I - Linear theory. II - Nonlinear theory

Journal Article · Mon Apr 01 00:00:00 EST 1991 · Radio Science; (United States)

DOI:https://doi.org/10.1029/90RS02580· OSTI ID:5514981

Mourenas, D; Beghin, C ^[1]

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1. CNRS, Laboratoire de Physique et Chimie de l'Environnement, Orleans (France)

This paper investigates the generation mechanism responsible for the packets of electron cyclotron waves induced by an electron beam injected from the Space Shuttle and measured by Spacelab I instruments. The observed electron cyclotron emissions as well as their amplitude modulation are explained using a linear and a nonlinear treatments. Using a linear theory, it is shown that the emissions consist of the electronic Bernstein modes which are generated by an interaction between the neutralization return current and the ambient ionospheric plasma, and not directly by the primary beam. The observation of successive harmonic packets around the fundamental wave is interpreted using a two-dimensional single-wave model of the nonlinear interaction between a finite size ring beam and an infinite homogeneous magnetized plasma. 43 refs.

• OSTI ID: 5514981
• Journal Information: Radio Science; (United States), Vol. 26; ISSN 0048-6604
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
IONOSPHERE
BEAM INJECTION
AMPLITUDES
COLD PLASMA
CYCLOTRON RADIATION
ELECTRON BEAMS
HARMONICS
NONLINEAR PROBLEMS
SPACE SHUTTLES
AIRCRAFT
BEAMS
BREMSSTRAHLUNG
EARTH ATMOSPHERE
ELECTROMAGNETIC RADIATION
LEPTON BEAMS
OSCILLATIONS
PARTICLE BEAMS
PLANETARY IONOSPHERES
PLASMA
RADIATIONS
SPACE VEHICLES
VEHICLES
640201* - Atmospheric Physics- Auroral
Ionospheric
& Magetospheric Phenomena