Ultraviolet Absorption Spectra of Alkali Metal Azides
- 1 December 1961
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 35 (6) , 2122-2127
- https://doi.org/10.1063/1.1732218
Abstract
The absorption spectra of thin films of NaN3, KN3, RbN3, and CsN3 have been measured at 295°, 77.3°, and 4.2°K in the wavelength range 1400 to 2200 A. The spectra show three well-defined absorption peaks, which have not been reported previously, and these were identified as the exciton transitions corresponding to n=1, 2, and 3. In thicker films and thin single crystals a new absorption band with multiple structure, having a maximum around 2225 A has been observed in all materials and this has been tentatively identified as due to a transition of low probability to a low-lying excited state of the azide ion. On irradiating the azides at 2400 A a weak fluorescence was observed in all cases.Keywords
This publication has 12 references indexed in Scilit:
- Reactivity of azides in the solid state. I. Optical properties and photochemical decomposition of thallous azideProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1960
- Physics And Chemistry Of The Inorganic AzidesChemical Reviews, 1959
- Versatile Apparatus for Automatic Recording of Absolute Fluorescent Spectra*Journal of the Optical Society of America, 1959
- Absorption Spectra at 4°K of Single Crystals of Normal and Isotopically Substituted Sodium and Potassium NitratesThe Journal of Chemical Physics, 1959
- Spectra of sodium and potassium azide crystals coloured by ultra-violet and X -ray radiationProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1959
- Structure and stability of inorganic azides. II. Some physical and optical properties, and the fast decomposition of solid monovalent inorganic azidesProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1959
- Experimental investigations of exciton spectra in ionic crystalsPhilosophical Magazine, 1959
- Preparation and properties of crystals of potassium and sodium azideProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1958
- The optical and electrical properties of silver azide and their relation to its decompositionProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1957
- Electronic and Vibrational States of the Nitrite Ion. I. Electronic States1Journal of the American Chemical Society, 1957