[23p-A102-1~14] 2.5 Radiation-induced phosphors

[23p-A102-11] Fabrication of surface modified CeO₂ nanoparticle-doped plastic scintillators and evaluation of high-energy X-ray detection characteristic

〇Shusuke Komatsuzaki¹, Masanori Koshimizu², Yutaka Fujimoto¹, Akito Watanabe¹, Atsushi Sato¹, Akira Yoko¹, Gimyeong Seong¹, Takaaki Tomai¹, Tadafumi Adschiri¹, Shunji Kishimoto³, Keisuke Asai¹ (1.Tohoku Univ., 2.Shizuoka Univ., 3.KEL)

Keywords:plastic scintillator, nanoparticle, cerium

In high-count measurements at synchrotron radiation facilities, there is a growing demand for the development of detectors with high detection efficiency and fast response. One of the candidates for such a detector is a plastic scintillator (PS). Although PS has excellent fast response, it has a problem of low detection efficiency for high energy radiation. To compensate for this disadvantage, there is a technique called heavy metal addition. In the present study, we attempted to develop a PS with both high luminous flux and high detection efficiency by employing a PS doped with CeO₂ nanoparticles synthesized by a supercritical hydrothermal method.