Abstract
Theoretical populations of the 2s3l levels of Ne vii are presented for electron temperatures from 2.5 × 105 K to 4 × 106 K and electron densities from 108 cm−3 to 1012 cm−3. These, in conjunction with intensities of previously observed solar Ne vii lines and wavelengths and intensities observed in the laboratory, are used to identify further Ne vii lines in the solar spectrum. The dependence on temperature of intensity ratios such as I(2s2p 1 P − 2s3d 1 D)/I(2s2p 3 P − 2s3d 3 D) is demonstrated and the advantages of the small wavelength separation of such lines for solar electron temperature diagnostics are discussed.
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Lang, J., Dufton, P.L. & Kingston, A.E. Transitions between the n = 2 and n = 3 levels of Ne VII in the solar spectrum. Sol Phys 105, 313–322 (1986). https://doi.org/10.1007/BF00172050
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DOI: https://doi.org/10.1007/BF00172050