The calculation of sodium D line profiles with allowance for departure from LTE

Details The calculation of sodium D line profiles with allowance for departure from LTE The calculation of sodium D line profiles with allowance for departure from LTE

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987kfnt....3q..34b&link_type=abstract

Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 3, Jan.-Feb. 1987, p. 34-41. In Russian.

Physics

Abundance, D Lines, Sodium, Solar Atmosphere, Solar Spectra, Atomic Energy Levels, Ultraviolet Spectra

Scientific paper

The differential method of equivalent two-level atoms and a modified linearization method are used to determine the populations of the 3S, 3P, 4S, and 4P levels of the Na I atom at various heights in the solar atmosphere. The observed and calculated profiles of the D1 and D2 lines for four different positions on the solar disk agree well. The calculated profiles of subordinate lines at 330.3 and 1139.9 nm are deeper than the observed ones.

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