Photoluminescence and Scintillation Properties of Tb:GdTaO4 Crystals
Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida
Abstract
Tb-doped GdTaO 4 crystals were synthesized to investigate their photoluminescence and scintillation properties. Tb:GdTaO 4 exhibits photo-and radioluminescence characterized by several sharp peaks due to 4f-4f transitions of Tb 3+ . The photo-and radioluminescence decay time constants are 500-900 s. The values become short with increasing Tb concentration and are typical for the 4f-4f transitions of Tb 3+ . From the quantum yield (QY), radioluminescence spectra, and pulse height under 137 Cs -rays, the 1% Tb:GdTaO 4 crystal shows the highest scintillation output among the samples.
Topics & Concepts
PhotoluminescenceScintillationMaterials scienceOptoelectronicsScintillatorOpticsRadiochemistryPhysicsChemistryDetectorRadiation Detection and Scintillator TechnologiesAtomic and Subatomic Physics ResearchMedical Imaging Techniques and Applications