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Tuesday, August 4, 2020 | History

4 edition of Luminescence and Scintillation of Ce3+ Doped Inorganic Materials for Gamma-Ray Detection found in the catalog.

Luminescence and Scintillation of Ce3+ Doped Inorganic Materials for Gamma-Ray Detection

In English and Dutch

by J. C. Van t Spijker

  • 191 Want to read
  • 19 Currently reading

Published by Delft Univ Pr .
Written in English

    Subjects:
  • Chemistry - General,
  • Science,
  • Science/Mathematics

  • The Physical Object
    FormatPaperback
    ID Numbers
    Open LibraryOL12803588M
    ISBN 10904071844X
    ISBN 109789040718441
    OCLC/WorldCa41981364

    Luminescence Science and Technology Materials that generate luminescence are called phosphors. Commercial phosphors are mostly inorganic compounds prepared as powders (with grain sizes usually in the order of µm) or thin films. The phosphor materials contain one or more impurity ions or activators (A), typically present. Synthesis and luminescence properties of Eu2+/Ce3+ co-doped SrB2Si2O8 phosphor. Journal of Materials Science: Materials in Electronics , 30 (6), .

    Mn 2+ doped γ-AlON is an interesting narrow-band green emitting phosphor which can be used in wide color gamut white LED backlights for liquid crystal displays (LCDs). However, the spin-forbidden transition of 3d 5 in Mn 2+ results in a quite low absorption efficiency, γ-AlON:Mn 2+ thus has a small external quantum efficiency. Besides Eu 2+,Ce 3+ is another promising sensitizer and is. The luminescence and gamma-ray detection properties of the new cerium-doped rare-earth scintillator lutetium-yttrium oxyorthosilicate (LuYSiO5:Ce, LYSO:Ce) were investigated and compared to those of cerium-doped yttrium oxyorthosilicate (Y2SiO5:Ce, YSO:Ce) crystal. The light yield and energy resolution were measured using photomultiplier tube (PMT) readout.

    We investigated scintillation properties of organic–inorganic layered perovskite-type compounds under gamma-ray and X-ray irradiation. A crystal of the hybrid compounds with phenethyl amine (   INTRODUCTION. Recently, the Ce 3+-doped garnet phosphors are attracting a great deal of attention in the application for white light emitting diodes (LEDs).Most white LEDs are composed of blue LEDs and yellow phosphors (Ce 3+:Y 3 Al 5 O 12), which have many advantages such as strong absorption at the blue LED wavelength (∼ nm), broad yellow luminescence, and high quantum .


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Luminescence and Scintillation of Ce3+ Doped Inorganic Materials for Gamma-Ray Detection by J. C. Van t Spijker Download PDF EPUB FB2

Luminescence processes occurring in the 5d 1 excited state of Ce 3+ and Pr 3+ centers in the (Gd,RE) 3 (Ga,Al) 5 O 12, RE=Lu,Y, multicomponent garnet host were studied by purely optical contactless ation of measurements of the prompt nanosecond decay and slow delayed radiative recombination decay allows to resolve the presence of thermal quenching and thermally Cited by:   1.

Introduction. Ce 3+ - doped inorganic crystals are commonly fabricated as scintillation detector for X- and γ - rays. The main reasons are due to the high detection efficiency arising from a high density of inorganic materials and high light output resulting from the fast and efficient Ce 3+ (5d → 4f) radiative transitions.

Ce 3+ - doped luminescence glasses have been Author: Weerapong Chewpraditkul, Nakarin Pattanaboonmee, Nattasuda Yawai, Warut Chewpraditkul, Prapon Lertlo. Luminescence and scintillation of Ce(3+) doped inorganic materials for gamma-ray detection Luminescentie en scintillatie van Ce(3+) gedoteerde anorganische materialen voor gammastralingsdetectie.

Author. van 't Spijker, J.C. Contributor. van Eijk, C.W.E. (promotor) Faculty. Applied Sciences. Date. Cited by:   Scintillation and luminescence properties of K 2 LaCl 5: Ce 3+ with Ce 3+ concentrations between % and 10% are presented.

Under optical excitation the characteristic double-peaked Ce 3+ luminescence is observed between and nm. Under X-ray excitation also self-trapped exciton (STE) luminescence ranging from to > nm is also by: Abstract The scintillation properties of Ce3+ doped ternary cesium rare‐earth halides are reported.

We investigated Cs3Lu2I9:Ce3+, Cs3Gd2I9:Ce3+, Cs3LaBr6:Ce3+ and Cs3LuI6:Ce3+. Cs3Lu2I9:Ce3 Cited by: Luminescence and scintillation of Ce3+-doped oxide glass with high Gd2O3 concentration.

The compositional dependence of luminescence properties and scintillation response were investigated in Ce3+-doped Y2Gd1Al5-xGaxO12 (x = 2, 3, 4) single crystals. The Gd3+ → Ce3+ energy transfer was evidenced by photoluminescence excitation spectra of Ce3+ emission.

Luminescence and scintillation of Ce 3+-doped high silica glass are presented. An intense photoluminescence is observed with a fast decay time of about 50 ns. It shows high integral scintillation efficiency of about % of that of a BGO crystal.

It has light yield of and photons/MeV under γ-and α-excitation, respectively. The luminescence features of Ce 3+ and Er 3+ doped samples indicated that these ions are effectively incorporated into the crystalline phase.

In addition, codoping with Ce 3+ –Er 3+ ions results in energy transfer processes from Ce 3+ to Er 3+ ions which led to the enhancement of near-infrared luminescence at μm. Luminescence and scintillation properties of newly discovered bromo-elpasolites Cs 2 NaGdBr 6: Ce 3+ (CNGB: Ce 3+) are crystals of CNGB: Ce 3+ with dimensions up to Ø7×10 mm 3 are successfully grown by the Bridgman technique.

X-ray excited luminescence measurements of the grown samples showed a broad emission band in the wavelength range from. The compositional dependence of luminescence properties and scintillation response were investigated in Ce 3+-doped Y 2 Gd 1 Al 5-x Ga x O 12 (x = 2, 3, 4) single crystals.

The Gd 3+ → Ce 3+ energy transfer was evidenced by photoluminescence excitation spectra of Ce 3+ emission. With increasing Ga content in the garnet host, the Ce 3+ luminescence from the lowest 5d level (5d1) is. This report presents the luminescence and scintillation response of Ce3+-doped oxide glasses with high Gd2O3 (30 mol%) content.

The characteristic emission of Ce3+ 5d → 4f transition peaking around nm was observed in its luminescence spectra under UV and X-ray excitation. Photoluminescence decay kinetics was governed by a few tens of nanoseconds decay time. also exhibits self-trapped exciton luminescence with fast scintillation decay (several ns) and low light yield ( photons=MeV).

On the other hand, extrinsic luminescence is observed for impurity-doped materials such as CsCaCl 3:Ce.9) CsCaCl 3:Ce exhibits Ce3+ 5d–4f luminescence that peaks at –nm, with fast scintillation decay and a.

The cerium doped Gd 2 YGa 3 Al 2 O 12 (Ce:GYGAG) scintillation ceramics were fabricated by the solid state reaction method. The microstructure, luminescence and scintillation properties have been studied. In photoluminescence decays, the decay times of Ce:GYGAG ceramic samples are close to monoexponential.

High silica glass doped with Eu 2+ ions was prepared as a scintillating material by impregnation of Eu ions into a porous silica glass followed by reduction sintering in CO atmosphere. A dominant emission band of the Eu 2+ 5d–4f transition peaking around nm was observed in the luminescence spectrum with the excitation peak around nm and no emission from Eu 3+ was present.

Luminescent and scintillation properties of Ce 3+ doped Ca 2 RMgScSi 3 O 12 (R=Y, Lu) single crystalline films Article (PDF Available) in Journal of Luminescence November with 99 Reads.

Ce 3+,Pr 3+ ‐codoped SiO 2 –Al 2 O 3 –B 2 O 3 –Gd 2 O 3 glasses (SABG:Ce,Pr) were prepared by melt quenching under a CO reducing atmosphere. Luminescence properties were investigated under UV and X‐ray excitations.

A dominant emission band at nm belonging to the Ce 3+:5d 1 → 4f transition was observed in the photo‐ and radio‐luminescence spectra. Optical, scintillation and thermally stimulated luminescence properties of Ce-doped yttrium aluminum indium garnet Masaki Mori, Go Okada, Noriaki Kawaguchi et al.-Thallium magnesium chloride: A high light yield, large effective atomic number, intrinsically activated crystalline scintillator for X-ray and gamma-ray detection.

In this paper, we describe the formation and luminescence of a new garnet phosphor for light emitting diode (LED) based lighting, Lu2CaMg2(Si,Ge)3OCe3+. The regions for garnet phase formation are initially described with respect to larger rare earth substitution and show reasonable correlation to previous crystal chemistry studies for the garnet parent structure.

The optical properties of gadolinium gallium aluminum garnet, Gd 3 (Ga,Al) 5 O 12, doped with Ce 3+ are investigated as a function of the Ga/Al ratio, aimed at an improved understanding of the energy flow and luminescence quenching in these materials. A decrease of both the crystal field strength and band gap with increasing content of Ga 3+ is observed and explained by the geometrical.

Sensors and Materials, Vol. 31, No. 4 () Matsuzawa,(18) is known as the most famous blue persistent phosphor showing a long-lasting luminescence.(19,20) However, in spite of the great luminescence properties,(21,22) no study has been reported on the observation of radioluminescence (RL) from Eu:CaAl 2O 4 as far as we know.

Previously, we showed that a Eu-doped SrAl. A series of Ce3+-doped (Ca,Sr)2Al2SiO7 phosphors with different Ce3+ and Ca2+/Sr2+ concentrations were prepared by a high temperature solid-state reaction technique.

To get insight into the structure–luminescence relationship, the impact of incorporation of Sr2+ on structure of (Ca,Sr)2Al2SiO7 was first investigated via Rietveld refinement of high quality X-ray diffraction (XRD) data, and.The luminescence and gamma-ray detection properties of cerium-doped scintillators, namely, LuYAlO3:Ce (LuYAP:Ce), LuYAlO3:Ce (LuYAP:Ce), and YAlO3:Ce .