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A statistical study of coronal densities from X-ray line ratios of helium-like ions - Ne IX and Mg XISince the repair of the Solar Maximum Mission (SMM) spacecraft, the Flat Crystal Spectrometer (FCS) has recorded many high temperature spectra of helium-like ions under a wide variety of coronal conditions including active regions, long duration events, compact events, and double flares. The plasma density and temperature are derived from the ratios R and G, where R = f/i, G = (f + i)/r, and r, f, and i denote the resonance, forbidden, and intercombination line fluxes. A new method for obtaining the density and temperature for events observed with the FCS aboard SMM is presented. The results for these events are presented and compared to earlier results, and the method is evaluated based on these comparisons.
Document ID
19890046532
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Linford, G. A.
(Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Lemen, J. R.
(Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Strong, K. T.
(Lockheed Research Laboratories Palo Alto, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1988
Publication Information
Publication: Advances in Space Research
Volume: 8
Issue: 11 1
ISSN: 0273-1177
Subject Category
Solar Physics
Accession Number
89A33903
Funding Number(s)
CONTRACT_GRANT: NAS5-30431
Distribution Limits
Public
Copyright
Other

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