Physics
Scientific paper
Nov 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983nascp.2280.597i&link_type=abstract
In JPL Solar Wind Five p 597-604 (SEE N84-13067 03-92)
Physics
1
Ferric Ions, Ion Charge, Solar Wind, Coronal Holes, Electron Energy, Flow Velocity, International Sun Earth Explorer 3, Ion Temperature
Scientific paper
Solar wind measurements from the ULECA sensor of the Max-Planck-Institut/University of Maryland experiment on ISEE-3 are reported. The low energy section of approx the ULECA sensor selects particles by their energy per charge (over the range 3.6 keV/Q to 30 keV/Q) and simultaneously measures their total energy with two low-noise solid state detectors. Solar wind Fe charge state measurements from three time periods of high speed solar wind occurring during a post-shock flow and a coronal hole-associated high speed stream are presented. Analysis of the post-shock flow solar wind indicates the charge state distributions for Fe were peaked at approx +16, indicative of an unusually high coronal temperature (3,000,000 K). In contrast, the Fe charge state distribution observed in a coronal hole-associated high speed stream peaks at approx -9, indicating a much lower coronal temperature (1,400,000 K). This constitutes the first reported measurements of iron charge states in a coronal hole-associated high speed stream.
Galvin Antoinette B.
Gloeckler George
Hovestadt Dieter
Ipavich Fred M.
Klecker Berndt
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