U Band in CsI

Autor: R. S. Singh, G. A. Tanton, R. A. Shatas, S. S. Mitra
Rok vydání: 1970
Předmět:
Zdroj: The Journal of Chemical Physics. 52:538-542
ISSN: 1089-7690
0021-9606
DOI: 10.1063/1.1673019
Popis: The first electronic transition of substitutional H− and D− ions in CsI has been measured between 8 and 300°K. The absorption peak of the U band is located at 4.60 eV at 8°K. A small blue shift of 0.015 eV is observed upon replacing H− by D−. The method of moments has been employed to analyze the U‐band shape. The temperature‐induced broadening of the half‐width and the shift of the peak is explained in terms of an effective phonon frequency representing the phonon spectrum of the host lattice.
Databáze: OpenAIRE