Scintillation Response of Nd-Doped LaMgAl11O19 Single Crystals Emitting NIR Photons for High-Dose Monitoring
Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida
Abstract
The Nd-doped LaMgAl11O19 single crystals were synthesized by the floating zone method, and the photoluminescence and scintillation properties were evaluated. Under X-ray irradiation, several sharp emission peaks due to the 4f–4f transitions of Nd3+ were observed at 900, 1060, and 1340 nm in the near-infrared range, and the decay curves show the typical decay time for Nd3+. The samples show good afterglow properties comparable with practical X-ray scintillators. The 1% and 3% Nd-doped LaMgAl11O19 samples show a good linearity in the dynamic range from 6–60,000 mGy/h.
Topics & Concepts
ScintillationAfterglowScintillatorPhotoluminescenceMaterials scienceDopingPhosphorRange (aeronautics)PhotonIrradiationOptoelectronicsAnalytical Chemistry (journal)OpticsPhysicsChemistryNuclear physicsDetectorAstronomyGamma-ray burstChromatographyComposite materialRadiation Detection and Scintillator TechnologiesNuclear Physics and ApplicationsNuclear materials and radiation effects