The identification of new forbidden coronal lines in the solar EUV spectrum |
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| Authors: | Carole Jordan |
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| Institution: | (1) Astrophysics Research Unit, Culham Laboratory, Abingdon, Berks, England |
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| Abstract: | Identifications are proposed for twenty of the twenty-eight coronal lines observed in the spectra obtained during a rocket flight into the path of the 7 March, 1970 solar eclipse. The methods by which the lines have been identified are discussed. Most of the lines identified are from forbidden transitions between levels in the ground 2p
n and 3p
n configurations in high ions of magnesium, silicon, sulphur, iron, and nickel. The temperature range represented is from 6.9 × 105 K to 2.5 × 106 K. The classification of three lines of Fexii and two of Nixiv has led to a revised identification for the near ultraviolet 2
D
3/2-2
P
1/2 transition in Fe xii. This transition can be identified with the line at 3072 Å rather than that at 3021 Å as previously suggested in the literature. |
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