6533b858fe1ef96bd12b626b
RESEARCH PRODUCT
The experimental observation of the potential barrier for self-trapped exciton decay into F-H pair in KCl-Na crystals
V. V. GavrilovS. Chernovsubject
Nuclear and High Energy PhysicsRadiationAbsorption spectroscopyChemistryExcitonAnalytical chemistryActivation energyCondensed Matter PhysicsImpurityAbsorption bandUltrafast laser spectroscopyPhysics::Atomic and Molecular ClustersRectangular potential barrierGeneral Materials ScienceAbsorption (chemistry)Atomic physicsdescription
Abstract The optical absorption induced by the electron pulse irradiation of Na+ doped KCl has been measured. Transient optical absorption band of FA centers was observed at 80 K (LNT). The temperature dependence of FA center formation was studied. It is proposed that the obtained activation energy originates from the potential barrier between the STE perturbed by the cation impurity and the nearest neighbour FA-H pair. The mechanism of the suppression of the defect formation by the monovalent cation impurity in alkali halide crystals is discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1995-12-01 | Radiation Effects and Defects in Solids |