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RESEARCH PRODUCT
The role of radiolysis products in in situ luminescence of Li2O
A. SupeJ. TiliksGunta KizaneV. GrigorjevaVictor GrishmanovS. Tanakasubject
Nuclear and High Energy PhysicsChemistryRadiochemistryAnalytical chemistrychemistry.chemical_elementElectronOxygenIonchemistry.chemical_compoundExcited stateRadiolysisIrradiationLithium oxideLuminescenceInstrumentationdescription
Abstract A new phenomenon of an “excess luminescence” (EL) in Li 2 O observed at 4.5–2.5 eV under light ion (H + , He + ) irradiation during the rise of temperature (>573 K ) was studied. The essence of the EL is in the rapid pulse increase of the luminescence intensity. It is proposed that this phenomenon is based on the thermo-dissociation of colloidal Li into Li lattice ions, F + and F 0 centers, and oxygen vacancies. Formed oxygen vacancies capture electrons during the irradiation and form excited F-centers, whose relaxation gives the EL. This phenomenon was reproduced using X-ray irradiation and a sample containing colloidal Li introduced by irradiation with electron accelerator to an absorbed dose of 105 MGy.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-01-01 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms |