Synthesis of Lu2O3-Ga2O3-SiO2 Glass as a New Glass Scintillator

Abstract

We synthesized 20Lu 2 O 3 -30Ga 2 O 3 -50SiO 2 glasses doped with various concentrations of Sn using a floating zone furnace equipped with Xe arc lamps. The samples showed a luminescence band around 450 nm in both photoluminescence (PL) and scintillation spectra. The origin of the luminescence was ascribed to the T 1 -S 0 transition of Sn 2+ on the basis of the luminescence wavelength and PL decay time constant. The highest scintillation intensity and PL quantum yield were observed from the 1% Sn-doped sample. The afterglow level tended to decrease with increasing Sn doping, and the afterglow levels of the 1 and 3% Sn-doped samples were comparable to that of the conventional Tl-doped CsI scintillator. The optimal concentration of Sn for the glass was estimated to be 1%.

Scintillation Properties of Ba3RE(PO4)3 Single Crystals (RE = Y, La, Lu)

“…Generally, a scintillator requires several properties, including high scintillation light yield ( LY ); high energy resolution; low afterglow level ( Af ); suitable emission wavelength, which coincides with the spectral sensitivity of the photodetector (e.g., PMT: photomultiplier tube); short decay time; and no deliquescence. Up to now, many researchers have studied novel scintillators [ 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. However, there are no scintillators that have all the above requirements, and the development of new scintillators has been still ongoing.…”

Photoluminescence and Radioluminescence Properties of Y3Al5O12 Doped with 3d-Transition Metal Ions

“…Although many scintillators have been studied in the last few decades, (4)(5)(6)(7) fundamental studies on novel scintillators still continue to achieve better performance than ever before. There have been reports on various types of scintillator, such as single crystals, (8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21) nanocrystals, (22) crystalline films, (23) ceramics, (24)(25)(26)(27) glasses, (28)(29)(30)(31)(32)(33)(34)(35)(36)(37) plastics, (38) and organic-inorganic hybrid materials, (39)(40)(41)(42) even in the last few years. In terms of the luminescent center, specific dopants such as Ce, Eu, and Tl have been mainly used for commercial scintillators; however, other dopants are also of our interest.…”

Tm Concentration Dependence on Scintillation Properties of Y3Al5O12 Garnet Single Crystals

“…Therefore, the performance of scintillators strongly affects that of radiation detectors. Various scintillators, such as films, (6) ceramics, (7)(8)(9)(10)(11)(12) glasses, (13)(14)(15)(16)(17)(18)(19)(20)(21)(22) single crystals, (23)(24)(25)(26)(27)(28)(29)(30)(31)(32) and nanoparticles, (33) have been investigated to date. Single crystal materials tend to show excellent properties and are widely used as scintillators.…”