2023年第70回応用物理学会春季学術講演会

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[17p-PA09-1~76] 2 放射線(ポスター)

2023年3月17日(金) 16:00 〜 18:00 PA09 (ポスター)

16:00 〜 18:00

[17p-PA09-45] Scintillation Characteristics of Ce-doped Yttrium-Gadolinium Pyrosilicate Crystal

Lennart Moritz1、〇(DC)Prom Kantuptim2、Takumi Kato2、Daisuke Nakauchi2、Noriaki Kawaguchi2、Takayuki Yanagida2 (1.Regensburg Univ.、2.NAIST)

キーワード:scintillator, Ce3+, single crystal

Radiation is more important than ever before, and the detection of radiation is also significant as radiation itself. Scintillators are materials that can convert the high-energy photons of e.g. ionizing radiation or even charged particles such as α-rays to lower energy photons in the ultraviolet to infrared range. There are many types of materials for scintillators like glass, plastic, transparent ceramics, organic or inorganic compounds, semiconductor, or single crystals. Single crystals are well known for their high light yield and good chemical stability. One interesting host material is the pyrosilicate group X2Si2O7. Many promising material compositions are already studied like Ce-doped Lu2Si2O7 with fast decay time and high light yield or Ce-doped Y2Si2O7 which has an even faster decay time. For a deeper understanding of the behavior of pyrosilicate host materials, additional study on the host materials is needed. This study is focused on a yttrium-gadolinium pyrosilicate (Y2-XGdXSi2O7) single crystal sample of different ratios of Gd and Y with 2% Ce dopant to investigate the ratio-dependent scintillation properties.