Physics
Scientific paper
May 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981fcph....7..131n&link_type=abstract
Fundamentals of Cosmic Physics, vol. 7, May 1981, p. 131-199.
Physics
56
Helium Ions, Ion Density (Concentration), Particle Energy, Solar Wind Velocity, Coulomb Collisions, Energy Spectra, Helium Hydrogen Atmospheres, Ion Emission, Solar Spectra, Solar Temperature, Temperature Profiles, Velocity Measurement
Scientific paper
It is pointed out that the concentration of helium in the solar wind relative to hydrogen fluctuates wildly. Under certain circumstances, the helium to hydrogen abundance ratio is strongly enhanced over probable solar values; at other times, the amount of helium in the solar wind is immeasurably small. In spite of the fact that helium is heavier than hydrogen, solar-wind helium often leaves the solar gravitational field with a higher velocity than does the hydrogen. It is thought that the mechanisms responsible for helium behavior may contain clues to unanswered questions concerning the acceleration and energy exchange processes of the entire solar wind. A brief review is given of the principal features and theories of the solar wind as a whole. In addition, measurement techniques are discussed. Emphasis throughout is on the experimental data concerning the dynamics of solar-wind helium. On the basis of coronal temperatures, it is shown that helium in the solar wind is almost always doubly ionized. It is also shown that the average abundance of helium ions in the solar wind is usually in the range of 3 to 6% by number.
No associations
LandOfFree
Observations of solar-wind helium does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Observations of solar-wind helium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of solar-wind helium will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1441325