Plasma diagnostics for the outer solar corona - UV and XUV Fe XII lines

Details Plasma diagnostics for the outer solar corona - UV and XUV Fe XII lines Plasma diagnostics for the outer solar corona - UV and XUV Fe XII lines

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...285..347w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 285, Oct. 1, 1984, p. 347-353.

Astronomy and Astrophysics

Astrophysics

12

Atomic Spectra, Iron, Plasma Diagnostics, Solar Corona, Solar Wind, Ultraviolet Spectra, Extreme Ultraviolet Radiation, Far Ultraviolet Radiation, Heavy Ions, Line Spectra, Solar Spectra

Scientific paper

The formation of the UV and XUV spectral lines of Fe XII in the outer corona was investigated. The results indicate that these lines can be an important tool for probing the physical conditions in the coronal regions where the solar wind is generated. The Fe XII lines can be particularly useful for determining outflow velocities of heavy ions in the solar wind and for providing critical empirical constraints on energy transport and dissipation mechanisms in the solar wind acceleration region. Application of the theoretical calculations to existing UV, EUV, and XUV observations of the low corona provide evidence that: (1) the inclusion of the effects of resonances in the collision strengths for the low-lying levels of Fe XII is important, (2) that the contributions of resonances for these levels are even larger than the estimates given in the present paper, and (3) that the collision strengths used here yield populations for these levels which are accurate to a factor of 2. These results have implications concerning the accuracy of abundances and densities derived from observations of the Fe XII lines in the low corona.

Affiliated with

Also associated with

No associations

Rating

Plasma diagnostics for the outer solar corona - UV and XUV Fe XII lines 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 Plasma diagnostics for the outer solar corona - UV and XUV Fe XII lines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plasma diagnostics for the outer solar corona - UV and XUV Fe XII lines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1227004