Velocity distributions of solar wind ions and electrons

Details Velocity distributions of solar wind ions and electrons Velocity distributions of solar wind ions and electrons

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.207...33m&link_type=abstract

In ESA Plasma Astrophys. p 33-40 (SEE N85-22270 12-90)

Astronomy and Astrophysics

Astrophysics

3

Electrons, Ions, Solar Wind, Velocity Distribution, Bremsstrahlung, Coulomb Collisions, Particle Interactions, Particle Motion, Temperature Distribution

Scientific paper

Solar wind ion and electron three-dimensional velocity distributions are presented emphasizing Helios measurements between 0.3 and 1 AU. The observed distributions strongly deviate from Maxwellians. Their detailed form distinctly correlates with the magnetic sector and solar wind stream structure. Among the most prominent non-thermal features are temperature anisotropies, heat fluxes, double ion streams, differential motion between protons and alpha particles, and narrow field-aligned electron strahl. Individual spectra are discussed and statistical results are presented. Kinetic processes which may shape the particle distributions, in particular the effects of Coulomb collisions, are considered. A plasma stability analysis for magnetosonic waves is mentioned.

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