Stochastic acceleration of cometary ions by lower hybrid waves

Details Stochastic acceleration of cometary ions by lower hybrid waves Stochastic acceleration of cometary ions by lower hybrid waves

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987georl..14..107b&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 14, Feb. 1987, p. 107-110.

Physics

17

Comets, Electrostatic Waves, Ion Motion, Particle Acceleration, Plasma Interactions, Solar Wind, Energetic Particles, Stochastic Processes, Turbulence Effects, Comets, Ions, Acceleration, Waves, Turbulence, Solar Wind, Interactions, Energy, Calculations, Electrical Fields, Comparisons, Giacobini-Zinner, Halley, Velocity, Spacecraft Observations

Scientific paper

The turbulence produced by lower hybrid waves, during interaction of solar wind with the cometary pick-up ions, leads to stochastic acceleration of these ions. The resulting energies of the cometary ions, calculated on the assumption that the entire turbulent electric field is used up for accelerating particles, are much larger compared to the recently observed energies of water-group ions in the vicinity of comets Halley as well as Giacobini-Zinner. Accounting for the fact that only a fraction of the field would lead to acceleration and the rest to heating, lower hybrid waves seem to be a potential source for the observed energetic cometary ions.

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