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Spectroscopic intensity measurements were carried out using an atmospheric pressure wall-stabilised arc operated in a mixture of argon and sulphur hexafluoride. The temperature (14500-17000K) was derived from Ar I and Ar II line intensity measurements in conjunction with the electron density (0.7-1.1*10 17 cm -3 ) obtained from the half widths of Stark broadened lines. Experimental F II/F I and S II/S I line transition probability ratios were determined. A new absolute scale for F I line transition probabilities based on published F II lifetime measurements is presented.
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Schulz-Gulde et al. (1980) studied this question.
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