Solar Flare Spectroscopic Diagnostics for Wavelengths Less Than 2000 Angstroms.
NAVAL RESEARCH LAB WASHINGTON DC
Pagination or Media Count:
We discuss the use of intensity ratios of emission lines for determining the electron density and temperature in flare plasmas. The availability diagnostics cover the temperature range from about 40000 K to about 10000000 K. We summarize the current work on flare density diagnostics and review the applications of this theory to available flare spectra. We discuss the importance of line profiles for determining nonthermal mass motions in the plasma and for estimating path lengths along the line of sight. We review the current information on line profiles in flare spectra. We comment on determining departures from ionization equilibrium using line ratios in the x-ray and EUV regions. Author