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Infinite Fine Structure Coupling in Radiative Transfer Problems

Published online by Cambridge University Press:  25 April 2016

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

The conditions for the equality of the line source functions associated with fine structure transitions in a multilevel atom have been examined by several authors. The equality or otherwise of the source functions depends largely on the value of the fine structure collision rate, equality occurring when this rate becomes infinitely large. The fact that the theoretical collision rates between fine structure levels of alkali atoms are so large suggests the possibility of simplifying complicated multilevel atom transfer problems by the consideration of the limit of an infinite fine structure collision rate.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 2 , Issue 1 , July 1971 , pp. 41 - 42
Copyright
Copyright © Astronomical Society of Australia 1971

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References

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