New spectral line identifications in high-temperature flares

A solar flare spectrum in the wavelength region between 7.8 and 10.0 A, recorded by the Flat Crystal Spectrometer on Solar Maximum Mission during a flare on 1985 July 2, is presented. It includes several spectral emission lines not hitherto reported. Most are identified through comparison with wavelengths either measured in laser-produced spectra or calculated ab initio. It is found that they are mainly due to n=2-4, 5 transitions in Fe XIX to Fe XXIII. In a few cases, previous identifications are corrected. The more intense lines appear in second order in another channel of the spectrometer. The potential of line-intensity ratios for temperature and density diagnostics is discussed. (author)