ENERGY DISTRIBUTION IN SOLAR EUV SPECTRUM AND ABUNDANCE OF ELEMENTS IN SOLAR ATMOSPHERE

This paper is a result of the evolution of researches on the prediction and identification of the solar EUV spectrum by Ivanov-Holodny and the author. An absolute calibration of the solar EUV spectrum is given. The corresponding energy distribution is shown in Figure 2. During the minimum solar activity the radiation flux in the range below 1027 Å near the earth is 2.6 erg/cm2 sec, in the maximum it is 8 erg/cm2 sec. Abundances of fifteen elements in the solar atmosphere were deduced (Table III) from a comparison of predicted and observed intensities of more than 300 lines in the spectral region below 1215 Å. © 1969 D. Reidel Publishing Company.