6533b821fe1ef96bd127b81e
RESEARCH PRODUCT
Optical Properties of Natural and Synthetic Minerals
Nina Mironova-ulmaneV. SkvortsovaLaima Trinklersubject
inorganic chemicalsMaterials sciencePhotoluminescenceAbsorption spectroscopyAnalytical chemistrytechnology industry and agriculturechemistry.chemical_compoundCondensed Matter::Materials SciencechemistryYttrium aluminium garnetImpurityVacancy defectElectron beam processingPhysics::Atomic and Molecular ClustersIrradiationAbsorption (chemistry)inorganic compounds; absorption spectra; photoluminescence; neutron irradiationNuclear chemistrydescription
The results of investigation of optical absorption and photoluminescence (PL) of topaz, beryl and yttrium aluminium garnet crystals doped with different concentrations of transition ions exposed to fast neutron irradiation and electron irradiation are presented. We suppose that irradiation leads to the formation of two types of complex centers: "Me2+-F+ (or F) centre" and complex centers, which consist of a cation vacancy and an impurity (iron, manganese and chromium) ion. Exchange interaction between radiation defects and impurity ions during neutron or electron irradiation gives rise to appearance of additional absorption and luminescence band broadening in investigated crystals.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-08-06 | Environment. Technology. Resources. |