Physics
Scientific paper
Feb 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991angeo...9..102r&link_type=abstract
Annales Geophysicae (ISSN 0939-4176), vol. 9, Feb. 1991, p. 102-110. Research supported by DFG and Polish Academy of Sciences.
Physics
19
Interstellar Gas, Ion Atom Interactions, Ion Production Rates, Nonthermal Radiation, Solar Activity Effects, Solar Wind Velocity, Charge Exchange, Electron Impact, Helium Ions, Hydrogen Ions, Ionization Frequencies, Photoionization, Velocity Distribution
Scientific paper
The existence of singly ionized interplanetary ions, both in the form of suprathermal keV-particles convected with the solar wind and MeV anomalous cosmic ray particles, has been observationally well confirmed in past years. In present theories, these ion species are ascribed to the ionization of neutral interstellar atoms during their traversal through the inner heliosphere. As far as charge exchange processes and electron impact ionizations by solar wind ions and electrons are involved, it is proven that the associated ionization frequencies, local ion production rates, and resulting suprathermal ion fluxes are strongly influenced by the actually prevailing solar wind type. According to a detailed analysis, all the relevant properties of suprathermal H(+)- and He(+)-ions are substantially dependent on the solar wind history that precedes the measurements.
Fahr Hans Jörg
Ruciński Daniel
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