Scintillation Characteristics of Pr-doped Gd2Si2O7 Single Crystal

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Nd-doped GdVO 4 single crystals were synthesized and their photoluminescence and scintillation properties were evaluated. The Nd-doped samples showed scintillation due to the 4f-4f transitions of Nd 3+ with peaks at around 900, 1060, and 1320 nm. In addition, we evaluated the relationship between the scintillation signal intensity and the X-ray exposure dose rate for dosimetric application. All the Nd-doped samples demonstrated high sensitivity with a dynamic range from 0.006 to 60 Gy/h.

Section: Introductionmentioning

confidence: 99%

X-ray-induced Luminescence Properties of Nd-doped GdVO4

Akatsuka¹,

Kimura²,

Onoda³

et al. 2021

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“…Many inorganic materials have also been investigated as novel scintillators. (11)(12)(13)(14)(15) In recent years, with the development of near-infrared (NIR) photodetectors, NIR-emitting scintillators have been studied. (16)(17)(18)(19)(20) NIR-emitting scintillators are expected to be used in biomedical imaging (21) and dose monitoring in nuclear power plants.…”

Section: Introductionmentioning

confidence: 99%

Optical and Scintillation Properties of Nd-doped Strontium Yttrate Single Crystals

Fukushima¹,

Akatsuka²,

Kimura³

et al. 2021

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Nd:SrY 2 O 4 single crystals were successfully synthesized by the floating zone method, and their photoluminescence (PL) and scintillation properties were investigated. The X-ray diffraction patterns of synthesized Nd:SrY 2 O 4 demonstrate no impurity phase. Under X-ray irradiation, the samples show scintillation with sharp emission lines at around 900, 1064, and 1300 nm due to the 4f-4f transitions of Nd 3+ . The PL and scintillation decay time constants were approximately 170-180 and 200-270 μs, respectively. The scintillation intensity was proportional to the X-ray dose exposure in the dynamic range from 0.06 to 60 Gy/h.

“…There have been many studies on the properties of scintillators and dosimetric materials in the last several decades, (2)(3)(4)(5)(6)12) and research on both types of phosphor materials is still an attractive topic. As recent studies on scintillators and dosimetric materials, single crystals, (19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30)(31) sintered ceramics, (32)(33)(34)(35)(36)(37) glasses, (38)(39)(40)(41)(42)(43) eutectics, (44,45) plastics, (46) and organic-inorganic hybrid materials (47) have been reported. Among them, glass materials have the advantages of high transparency, formability, and chemical stability.…”

Section: Introductionmentioning

confidence: 99%

Scintillation Properties of Non-doped and Pr-doped BaO–B2O3–SiO2 Glasses and Glass-ceramics

Kawaguchi¹,

Masai²,

Akatsuka³

et al. 2021

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We have studied the scintillation properties of non-doped and Pr-doped BaO-B 2 O 3 -SiO 2 glasses and glass-ceramics. The glass transition temperature (T g ), the temperature of crystallization onset (T x ), and the crystallization peak (T p ) were determined by differential thermal analysis. The glass-ceramics were obtained by heating at three different temperatures (T g + 50 °C, T x , and T p ). We confirmed that the X-ray diffraction peaks can be ascribed to the BaSiO 3 crystalline phase in the glass-ceramic samples. In the X-ray-induced scintillation spectra, we observed the intrinsic luminescence of the host glass and luminescence due to the 4f-4f transition of Pr 3+ ions. In addition, the 1% Pr-doped BaO-B 2 O 3 -SiO 2 glass-ceramic with heating at T g + 50 °C clearly showed luminescence in the wavelength range from 250 to 350 nm under X-ray excitation. Its photoluminescence (PL) decay time was estimated to be 26.28 ns and its luminescence is considered to be due to the 5f-4f transition of Pr 3+ ions.