Abstract
Optical and Near-Infrared Scintillation Properties of Nd3+-Doped YVO4 Crystals
Highlights
Solid-state scintillation materials are widely used in ionizing radiation detection systems for security inspection to medical imaging, well logging, and radiation monitoring at nuclear power plants.[1,2,3,4] Common systems are based on the detection of visible (VIS) and ultraviolet (UV) light emitted by scintillators excited by high-energy photons or charged particles
Some researchers reported the NIR scintillation characteristics of various materials, such as oxides, halides, and metals.[5,6,7,8,9] Our group has recently studied some oxide laser materials activated with rare-earth ions, and they were found to show intense NIR 4fn–4fn emission peaks and good irradiation dose response under exciton with X-rays.[10,11,12,13] the present study focuses on a Nd3+-doped yttrium vanadate YVO4 crystal because it is one of the most efficient laser host crystals that provide 1064 nm light owing to the Nd3+ ions.[14,15,16] The scintillation characteristics of the undoped YVO4 crystal have been studied, and the crystal was found to exhibit the blue emission band owing to the transition from the triplet state of (VO4)3−.(17,18) To the best of our knowledge, the
The photoluminescence and radioluminescence spectra of the Nd-doped YVO4 were recorded on a SR-163 spectrometer in combination with a DU492A-1.7 charge-coupled device (CCD) detector (Andor), which was cooled to 210–230 K by a Peltier module.[10,11,12,13] A xenon-lamp was used as the excitation source for photoluminescence measurements
Summary
Solid-state scintillation materials are widely used in ionizing radiation detection systems for security inspection to medical imaging, well logging, and radiation monitoring at nuclear power plants.[1,2,3,4] Common systems are based on the detection of visible (VIS) and ultraviolet (UV) light emitted by scintillators excited by high-energy photons or charged particles. Some researchers reported the NIR scintillation characteristics of various materials, such as oxides, halides, and metals.[5,6,7,8,9] Our group has recently studied some oxide laser materials activated with rare-earth ions, and they were found to show intense NIR 4fn–4fn emission peaks and good irradiation dose response under exciton with X-rays.[10,11,12,13] the present study focuses on a Nd3+-doped yttrium vanadate YVO4 crystal because it is one of the most efficient laser host crystals that provide 1064 nm light owing to the Nd3+ ions.[14,15,16] The scintillation characteristics of the undoped YVO4 crystal have been studied, and the crystal was found to exhibit the blue emission band owing to the transition from the triplet state of (VO4)3−.(17,18) To the best of our knowledge, the ISSN 0914-4935 © MYU K.K. Sensors and Materials, Vol 28, No 8 (2016). We report and discuss the optical (transmittance, photoluminescence) and scintillation (radioluminescence, dose response, temperature dependence) properties of the Nd3+doped YVO4 crystals with different Nd concentrations
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