Growth, structure, and temperature dependent emission processes in emerging metal hexachloride scintillators Cs<sub>2</sub>HfCl<sub>6</sub> and Cs<sub>2</sub>ZrCl<sub>6</sub>
Vitaliy Mykhaylyk, S.S. Nagorny, V. V. Nahorna, Pengli Wang, Mark D. Frogley, Ł. Świderski, V. Kolomiets, L. Vasylechko
Abstract
. The measurements of scintillation decay curves revealed complex kinetics due to delayed recombination processes. A tangible enhancement of the scintillation yield with heating is observed in the 125-150 K range. This effect is a manifestation of negative thermal quenching explained by thermal activation of trapped carriers. A model of the emission centre is proposed that consistently explains the observed changes of emission intensity with temperature in the crystals under study.
Topics & Concepts
ScintillationScintillatorExcited stateAtmospheric temperature rangeAnalytical Chemistry (journal)Materials scienceQuenching (fluorescence)Crystal (programming language)MetalLuminescencePhotonYield (engineering)Range (aeronautics)Crystal structureCrystallographyChemistryAtomic physicsFluorescencePhysicsOpticsOptoelectronicsThermodynamicsDetectorComposite materialComputer scienceProgramming languageChromatographyMetallurgyRadiation Detection and Scintillator TechnologiesLuminescence Properties of Advanced MaterialsAtomic and Subatomic Physics Research