He/+/ and other unusual ions in the solar wind - A systematic search covering 1972-1980

Details He/+/ and other unusual ions in the solar wind - A systematic search covering 1972-1980 He/+/ and other unusual ions in the solar wind - A systematic search covering 1972-1980

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.7379z&link_type=abstract

Journal of Geophysical Research, vol. 87, Sept. 1, 1982, p. 7379-7388. Research sponsored by the U.S. Department of Energy

Mathematics

Logic

32

Helium Ions, Solar Wind, Abundance, Imp, International Sun Earth Explorers, Iron, Oxygen Ions

Scientific paper

Using plasma data from IMPs 7 and 8 and ISEEs 1 and 3 for October 1972 to February 1980, a search for wind energy/charge spectra was conducted at the prompting of the discovery of large He(+) fluxes in the solar wind. Only three distinct events with identifiable levels of He(+) were found, all occurring within one year and during the rising phase of solar cycle 21, with minor ion abundances which were enhanced by comparison with normal solar wind abundances. The appearance of ionization states corresponding to both warm and very cold coronal freezing-in conditions within the same plasma is noted in all three events, as well as the observation of iron ions ranging from Fe(+10) to Fe(+5). One of the phenomenological results of this study is that certain unusual transient events eject both hot and unusually cold coronal plasma, mixed and coexisting on the same magnetic field lines.

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