Radiation-induced Luminescence Properties of Ce-doped SrAl2O4 Crystal and Translucent Ceramic

Abstract

A comparative study on the radioluminescence properties of Ce-doped SrAl 2 O 4 single crystal and translucent ceramic was performed. The transmittance of the synthesized ceramic is 20-30% in the visible region. Both samples exhibit photo-and radioluminescence with a broad emission peaking at 380 nm. The decay curves are fitted by a single exponential decay function with decay time constants of 30-50 ns, consistent with the typical value of the emission for the 5d-4f transitions of Ce 3+ . From the pulse height spectra measured under 241 Am γ-ray (59.5 keV) irradiation, the scintillation light yields are 17000 ph/MeV for the single crystal and 6100 ph/ MeV for the synthesized ceramic. The scintillation light yield and afterglow of the present samples show a negative correlation.

Concentration dependence on optical stimulated luminescence properties of Ce: Y2SiO5 single crystals

“…These values were owing to the 5d-4f transitions of Ce 3+ ions. [31][32][33][34][35][36][37] In addition, σ of the Ce:YSO samples were 0.20 (0.1%), 0.39 (0.5%), 0.57 (1.0%), and 0.52 (2.0%), respectively. Since 3σ of the 0.1, 0.5, 1.0, and 2.0% Ce: YSO samples were 0.58, 1.2, 1.7, and 1.6, respectively, the difference of the PL decay time constant was within statistical error.…”

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.…”