کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1692113 | 1510775 | 2016 | 5 صفحه PDF | دانلود رایگان |
• Scintillation process in BYF:Ce and BYF:Nd is revisited.
• Energy transfer was studied via radioluminescence as a function of temperature.
• Thermoluminescence was investigated by the Tm–Tstop method.
Radioluminescence spectra at temperatures ranging from 10 to 320 K and low temperature thermoluminescence glow curves of BaY2F8:Ce and BaY2F8:Nd scintillator crystals have been investigated. In both materials the intensities of the excitonic and the activator ion’s emission at X-ray excitation vary with temperature, anticorrelating with each other, which provides valuable information on the host-to-ion energy transfer. Detailed thermoluminescence studies, in turn, prove the existence of charge traps, which introduce quasi-continuous distributions of energy levels into the bandgap.
Journal: Optical Materials - Volume 59, September 2016, Pages 145–149