Computer Science
Scientific paper
Oct 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990p%26ss...38.1305y&link_type=abstract
(IAGA, Symposium on Dynamics and Abundances of Minor Ions, Exeter, England, July 24-Aug. 4, 1989) Planetary and Space Science (I
Computer Science
3
Alpha Particles, Particle Acceleration, Photon Density, Prognoz Satellites, Solar Heating, Solar Wind, Mass Spectrometers, Solar Wind Velocity, Thermodynamic Equilibrium
Scientific paper
The solar wind alpha-particle and proton measurements made by the mass spectrometer on Prognoz 7 are discussed. Bulk velocity difference V(alpha) - Vp is a sign of relative helium abundance differential with increasing solar wind velocity. It may be the result of mixing of solar wind streams with different velocities and different relative abundances. The correlation T(alpha)/Tp and absolute value (V/alpha/ - Vp) allow the suggestion that the alpha-component may heat more than the proton when two-component velocity distributions are shifted. Mechanisms of the heating are discussed. Equalizations of alpha-particle and proton velocities and temperatures due to Coulomb collisions seem to be placed at heliocentric distances of about 7 AU and about 20 AU, respectively.
Stupin Vitaly V.
Yermolaev Yu I.
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