Abstract

The emission spectrum of the hydrogen-fluorine flame has been studied with prism resolution in the fundamental, as well as in the first and second overtone regions. Flame temperatures of approximately 4000°K are estimated from the spectroscopic data, and although due to insufficient resolution and difficulties of self-absorption, it is not possible to determine whether there is equipartition of energy between vibrational and rotational modes of excitation. However, the present experiments, together with previous high resolution absorption studies, do permit new and improved values of the molecular constants to be determined, namely, B0=20.569 cm−1, α=0.751cm−1, D0=2.42×10−3 cm−1, v1=3961.31cm−1, and v2=7751.84 cm−1.

© 1953 Optical Society of America

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