Perpendicular ion beam instability: Solutions to the linear dispersion relation

Journal Article · Sat Jan 01 04:00:00 EST 1983 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA088iA01p00357· OSTI ID:6084177

Kintner, P M; Kelley, M C

A 200-eV Xe/sup +/ ion beam directed perpendicular to the terrestrial magnetic field in the F region ionosphere produced very narrow band electrostatic emissions just above multiples of the hydrogen cyclotron frequency. Although the plasma conditions associated with the ion beam were undoubtedly very complex, we consider first a simple ion beam in a background ionosphere. The dispersion relation for flute mode waves and an unmagnetized perpendicular ion beam is solved for a diffuse H/sup +/ plasma and then for a combination of dense O/sup +/ and diffuse H/sup +/. These solutions account for most of the wave properties, including the observation of narrow spectral peaks separated by the hydrogen cyclotron frequency and the observation of no spectral peaks below 2000 Hz. We cannot dismiss field-aligned currents associated with the Xe/sup +/ beam as an alternate source of free energy for the narrow band emissions. However, our intention here is to examine closely the Xe/sup +/ beam as a source for directly exciting the plasma waves.

• Research Organization: School of Electrical Engineering, Cornell University, Ithaca, New York 14853
• OSTI ID: 6084177
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 88:A1; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BEAMS
CHARGED PARTICLES
DISPERSION RELATIONS
EARTH ATMOSPHERE
ENERGY RANGE
EV RANGE
EV RANGE 100-1000
F REGION
FLUTE INSTABILITY
INSTABILITY
ION BEAMS
IONOSPHERE
IONS
PLANETARY IONOSPHERES
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA WAVES
XENON IONS