The Electronic Absorption Spectrum of Gaseous Uranium Hexachloride and Hexafluoride

Abstract

Abstract The ultra-violet absorption spectrum of uranium hexafluoride has been well documented(1), and some vibrational structure has been reported. The purpose of this work was to determine whether any rotational fine structure was present using conventional high resolution spectrographs. The absorption spectrum of gaseous uranium hexachloride is difficult to study because of the low vapour pressure of the compound and its thermal instability. Previous workers(2) did not publish a spectrum.