The probability distributions of S/+/ gyrospeeds in the Io torus

Details The probability distributions of S/+/ gyrospeeds in the Io torus The probability distributions of S/+/ gyrospeeds in the Io torus

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87..230b&link_type=abstract

Journal of Geophysical Research, vol. 87, Jan. 1, 1982, p. 230-234.

Mathematics

Probability

27

Heavy Ions, Io, Ion Motion, Jupiter Atmosphere, Probability Distribution Functions, Satellite Atmospheres, Sulfur, Velocity Distribution, Astronomical Photometry, Coulomb Collisions, Data Reduction, Emission Spectra, Energy Budgets, High Dispersion Spectrographs, Line Spectra, Particle Energy, Planetary Structure, Plasma Composition, Velocity, Jupiter, Satellites, Io, Distribution, Sulfur, Ions, Torus, Gyrospeeds, Comparisons, Emissions, Distance, Kinetics, Thermodynamics, Spectrum, Decomposition, Observati

Scientific paper

The first detailed thermal speed probability distribution for a Jovian plasma ion is presented. The distribution of heavy ion thermal speeds appears to be highly significant for an evaluation of the processes by which the particle and energy budgets of the Io plasma torus are maintained. Attention is given to the measurement, reduction, and analysis procedures which yield the reported probability distribution. A kinetic energy inventory of the Jovian plasma heavy ion component can be obtained from high-resolution, high-precision spectrophotometry of emission lines. The current S(+) study finds that detection of the line wings results in a mean energy (approximately 60 eV) which is higher by a factor of approximately 10 than is implied by the line core. This illustrates that a dispersive measurement may provide only a lower limit to the kinetic energy content.

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