X-Ray Lines of Helium-Like Oxygen and Neon in the Solar Corona,
Abstract
Line ratios from the helium-like ions O VII and Ne IX are useful as plasma diagnostics for both flaring and nonflaring solar coronal active regions. R sub o (low density limit of R (photon flux ratio of fabrication line) uncertainties are especially important for nonflaring plasmas. We analyzed 29 nonflare solar X-ray spectra, each a sum of approx. 10 scans by the SOLEX B spectrometer on the U.S.A.F. p78-1 satellite, to conclude that R sub o is in the range 3.7-4.1. In the relatively few flares we have analyzed we find no evidence of a departure from ionization equilibrium.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1982
- Accession Number
- ADA121438
Entities
People
- D. L. Mckenzie
- P. B. Landecker
Organizations
- The Aerospace Corporation