Absorption Spectrum of Fluorine in the Vacuum Ultraviolet
- 1 February 1959
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 30 (2) , 403-405
- https://doi.org/10.1063/1.1729963
Abstract
The absorption spectrum of F2 has been observed in the vacuum ultraviolet region. A special windowless absorption apparatus and a Lyman discharge light source were used in combination with a one-meter normal incidence spectrograph. A Rydberg series establishes the ionization potential of F2 as 15.7 ev. From a progression of bands at 874 A, one can deduce the dissociation energy of fluorine as 37.5±2 kcal/mole. The binding energy of F2+ is 3.3 ev. The low value of the ionization potential is consistent with the observed low value of the dissociation energy.Keywords
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