[17p-PA09-1~76] 2 放射線（ポスター）

▲ [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 (Y_2-XGd_XSi₂O₇) single crystal sample of different ratios of Gd and Y with 2% Ce dopant to investigate the ratio-dependent scintillation properties.