Precision Measurement of Relative Oscillator Strengths--I FUNDAMENTAL TECHNIQUE: A FIRST APPLICATION TO Mn I

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Abstract
A discussion of the importance of accurate measurements of atomic oscillator strengths in astrophysics is followed by an analysis of the accuracy that is potentially available together with a critical survey of the most useful techniques. A full discussion is given of the furnace method used in Oxford, and first results obtained for a few lines of Mn I are presented. It is shown that the accuracy of even this straightforward method can in some circumstances suffer from uncertainties about the state of thermodynamic equilibrium.

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