Physics
Scientific paper
Jan 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83...97h&link_type=abstract
Journal of Geophysical Research, vol. 83, Jan. 1, 1978, p. 97-113.
Physics
32
Helium Ions, Particle Interactions, Solar Wind Velocity, Transverse Waves, Wave Interaction, Alpha Particles, Particle Acceleration, Resonance, Tables (Data)
Scientific paper
The combined effects of resonant and nonresonant wave-particle interactions in the solar wind are studied. The major results are the following: (1) for a wide range of parameters (alpha particle - proton flow speeds) 1 AU is close to the effective phase speed of the left-hand waves, (2) in determining the ratio of alpha particle to proton flow speeds, at 1 AU the propagating characteristics of left-hand waves must be considered, (3) reasonable values of this ratio at the sun are obtained for a power law index of alpha approximately equal to 1.5 in the wave power spectrum if the effective phase speed of the resonant waves near the sun is not small in comparison to the Alfven speed there, (4) the present models do not show whether the coronal He(++) abundance is greater or less than at 1 AU, (5) resonant acceleration is more efficient than Coulomb friction as it does not manifest a runaway effect, and (6) observations of minor species may be used to deduce wave properties and plasma processes in the solar wind.
Hollweg Joseph V.
Turner James M.
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