On the shifts of magnesium Rydberg lines in the solar infrared spectrum

Details On the shifts of magnesium Rydberg lines in the solar infrared spectrum On the shifts of magnesium Rydberg lines in the solar infrared spectrum

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...286..607h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 286, no. 2, p. 607-610

Astronomy and Astrophysics

Astronomy

2

Atomic Spectra, Frequency Shift, Infrared Astronomy, Infrared Spectra, Magnesium, Rydberg Series, Solar Spectra, Spectral Line Width, Electron Density (Concentration), Photosphere, Solar Physics

Scientific paper

New theoretical data for calculating the widths and shifts of solar high-1 Rydberg lines of neutral magnesium are reported. The line shifts measured by Chang & Schoenfeld (1991) have been reanalyzed to obtain mean values of the electron densities in the regions where the lines are formed. It is found that, on the assumption that the shifts due to interaction with neutral hydrogen atoms are negligible, the lines are formed in a photospheric layer of about 200 km thick, at heights between 150 and 350 km, and electron densities between 1.5 x 1012 and 6.6 x 1012/cu cm.

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