On the analogy between local modes and color center absorption bands

1 January 1980

journal article
Published by EDP Sciences in Journal de Physique

Vol. 41 (4) , 359-364
https://doi.org/10.1051/jphys:01980004104035900

Abstract

The absorption and emission bands of F aggregate centers are compared with the local modes of H- and D- ions substituting the halogen ions in alkali halides. It is shown that the energies of the band maxima of F aggregate centers are proportional to the local vibrational mode energies of the H- or D- ions. Because of these correlations, the bands of the F aggregate centers are considered to be due to the excitation of local harmonic oscillators. From this simple picture — how oversimplified it may be — a series of predictions can be drawn, which are in fair agreement with experiment

Keywords

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