Electrostatic ion cyclotron, beam-plasma, and lower hybrid waves excited by an electron beam

Journal Article · Sat Jun 01 04:00:00 EDT 1985 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA090iA06p05159· OSTI ID:6283882

Singh, N; Conrad, J R; Schunk, R W

It is pointed out that electrostatic ion cyclotron (EIC) waves have been extensively investigated in connection with both space and laboratory plasmas. The present investigation has the objective to study the excitation of low-frequency waves in a multiion plasma by electron beams. The frequencies considered range from below the lowest gyrofrequency of the heaviest ion to about the lower hybrid frequency. It is shown that electron-beam instabilities can produce peaks in the growth rate below the cyclotron frequency of each ion species if nonzero perpendicular wave number effects are included in the ion dynamics. The dispersion relations for neutralized ion Bernstein (NIB) and pure ion Bernstein (PIB) waves are considered along with an instability analysis for a cold plasma and warm electron beam, the electron beam-plasma mode, banded ion cyclotron (EIC) waves with small perpendicular wavelengths, and the growth lengths of the waves. 39 references.

• Research Organization: Utah State Univ. of Agriculture and Applied Science, Logan
• OSTI ID: 6283882
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 90; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
BEAM-PLASMA SYSTEMS
BEAMS
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GYROFREQUENCY
HYDROGEN IONS
INHOMOGENEOUS PLASMA
ION PLASMA WAVES
ION WAVES
IONS
LEPTON BEAMS
PARTICLE BEAMS
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PLASMA WAVES