[14p-D511-1~11] 2.1 放射線物理一般・検出器基礎

▲ [14p-D511-6] Near-infrared scintillation properties of Er and Nd-doped Lu₂Si₂O₇ single crystal

〇(M2)Prom Kantuptim¹、Masaki Akatsuka¹、Daisuke Nakauchi¹、Takumi Kato¹、Noriaki Kawaguchi¹、Takayuki Yanagida¹ (1.NAIST)

キーワード：Scintillator, Floating zone method, Photoluminescence

Scintillator material is a classification of materials with the ability to convert high energy photons or charged particles to the lower energy photons such as visible and infrared light immediately after the absorption of the ionizing radiation. Recently, single crystal type scintillators generally use rare earth ions as a luminescence center. In this study, Lu₂Si₂O₇ (LPS) had been selected for the host materials due to the high effective atomic number, and it presents good comprehensive features such as a short decay time and a high light yield when doped with Pr³⁺ ions compared with the other rare earth pyrosilicate. In this work, Nd and Er were selected for luminescence centers for LPS because they were famous by intense infrared (IR) emissions. Single crystal samples of Nd and Er doped LPS were synthesized by the floating zone method, and after the synthesis, we investigated on both the photoluminescence and scintillation properties.