Luminescence quenching inFcenters under pressure
- 15 October 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 34 (8) , 5658-5664
- https://doi.org/10.1103/physrevb.34.5658
Abstract
Pressure effects on F-center emission in KCl, KBr, KI, CsCl, CsBr, and CsI are observed under pressures ranging from 1 atm to 12 kbar at 1.6 K. In potassium halides the F-center emission shows a monotonic decrease with increasing pressure, while in cesium halides it shows an anomalous feature: It recovers and increases far beyond its value at 1 atm, after first decreasing at low pressures. These pressure effects observed at extremely low temperatures are considered to be due to dynamical nonradiative transitions, and can be explained by the Dexter-Klick-Russell mechanism in a one-dimensional configuration coordinate model under hydrostatic pressure.Keywords
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