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Broadening of the Solar Sodium D-Lines by Atomic Hydrogen

Published online by Cambridge University Press:  25 April 2016

L. F. Mcnamara*
Affiliation:
Ionospheric Prediction Service Division, Commonwealth Centre, Sydney

Extract

It is well known that the wings of the solar sodium D-lines cannot be predicted successfully using present line-broadening theories and elemental abundances derived from an equivalent-width analysis of the weak lines. By far the most important cause of broadening of the D-lines is collision broadening by neutral hydrogen.

Type
Contributions
Copyright
Copyright © Astronomical Society of Australia 1971

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