The I(75.03 + 75.04 Å)/I(74.86 Å) line intensity ratio plotted as a function of logarithmic electron density (Ne in cm-3) at logarithmic electron temperatures (Te in K) of log Te = 5.7, 5.9 and 6.1. The black dashed line represents the observed value, from the solar flare spectrum of Acton et al. (1985).
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