HIGH DIELECTRONIC SATELLITE LINES IN SOLAR FLARE SPECTRA

Abstract

Resonance lines of highly ionized H and He-like ions and their associated sa- tellite lines are used to determine the electron temperature and the transient state of the plasma in solar flares. The intensity ratio of the satellite lines l~~nll-ls2~nL to the resonance line ls2-1s2p has been calculated for the n = 2, 3 and 4 shells of Fe XXIV. The results have enabled the identification of many lines in the only available high resolution solar flare iron spectrum and give a good estimate of the spectral intensity in the resonance line by evaluating the contribution due to the blending of the satellites with n 2 3. I. SATELLITE LINES IN THE SPECTRA OF H-LIKE AND like and He-like resonance lines and a number of He-LIKE IONS. associated satellites. The prominent satellites Resonance lines of highly ionized H-like have n = 2 and are well separated from the parent and He-like ions and their associated satellites resonance line, those with n = 3 lie closer, while can be used to calculate electron temperature and satellites with n z 4 are usually blended with the the transient state of the plasma, both of which resonance line. As first suggested by Gabriel et are important in the study of solar flare proces- al. 117, the satellite lines are formed by the me-