Influence of multiple ion species on low-frequency electromagnetic wave instabilities

Journal Article · Sun Oct 01 00:00:00 EDT 1989 · Journal of Geophysical Research; (USA)

DOI:https://doi.org/10.1029/JA094iA10p13565· OSTI ID:5834774

Brinca, A L; Tsurutani, B T ^[1]

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1. California Institute of Technology, Pasadena (USA)

Analysis of the stability of low-frequency electromagnetic modes excited by coexisting newborn ion species shows that the effect to multiple (singly ionized) ions on wave growth, for given background magnetoplasma conditions and relative densities, depends not only on their mass but also on the physical nature of the wave modes. Whereas each one of the coexisting ion beams tends to stimulate instabilities without undue influence from the other species, if ion masses are disparate, newborn ions of similar masses can strongly catalyze wave growth of fluidlike, nonresonant modes, but only bring about weak growth enhancements in cyclotron resonant instabilities. The authors contrast wave characteristics due to the coexistence of hydronium, water vapor, and oxygen newborn ions with previous results involving cometary hydrogen and oxygen ions and provide a physical interpretation of the results.

• OSTI ID: 5834774
• Journal Information: Journal of Geophysical Research; (USA), Vol. 94:A10; ISSN 0148-0227
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SOLAR WIND
IONIC COMPOSITION
ELECTROMAGNETIC RADIATION
HYDROGEN
INTERPLANETARY MAGNETIC FIELDS
ION BEAMS
ION DENSITY
ION DRIFT
IONS
MASS
OXYGEN
STABILITY
VELOCITY
WATER VAPOR
BEAMS
CHARGED PARTICLES
ELEMENTS
FLUIDS
GASES
MAGNETIC FIELDS
NONMETALS
RADIATIONS
SOLAR ACTIVITY
VAPORS
640104* - Astrophysics & Cosmology- Solar Phenomena