Presentation Information
[23p-P01-28]Photoluminescence and scintillation properties of Al(PO3)3–M(PO3)2 (M = Mg, Ca, Sr, Ba)–CsPO3–TlCl glasses
〇(B)Chie Morita1, Ko Hasegawa1, Yusuke Nakabayashi1, Akito Watanabe1, Hiroki Kawamoto1, Yutaka Fujimoto1, Keisuke Asai1 (1.Tohoku Univ.)
Keywords:
Scintillator,Glass
Scintillators are materials that can convert high-energy radiation such as X- or gamma-rays into visible light. They are widely used as detectors in medical diagnostics and high-energy physics. We synthesized Tl-doped Al(PO3)3–M(PO3)2–CsPO3 (M = Mg, Ca, Sr, or Ba) glasses as candidate scintillator materials and their photoluminescence (PL) and scintillation properties were studied. The multiple PL bands induced from different excitation levels were observed at 320 and 390 nm, attributed to the emission of the Tl+ center. In scintillation spectra, emission peaks similar to those in the PL spectra were observed. The highest light yield of 1100 photons/MeV was obtained under 137Cs γ-ray irradiation with the M = Mg sample. These results indicate that the fabricated sample can be the glass scintillator candidate for X- and γ-ray detection.