Jun 25 – 29, 2023
Ole-Johan Dahls Hus
Europe/Oslo timezone

P2.22: Alpha-ray Imaging with Alkali Copper Halide Scintillator

Jun 28, 2023, 5:02 PM
Ole-Johan Spiseri (Ole-Johan Dahls Hus)

Ole-Johan Spiseri

Ole-Johan Dahls Hus

Ole Johan Dahls Hus - Oslo Science Park Gaustadalléen 23B, 0373 Oslo


Mr Yusuke Urano (Graduate School of Engineering, Tohoku University)


Radiation monitor is an important technique for the decommissioning of the Fukushima Daiichi Nuclear Power Plant (FDNPP) with safety, and the internal exposure of workers who inhale alpha-emitting dust, such as plutonium dioxide particles, in nuclear facilities is a crucial matter for human protection from radiation. Detailed information on the radiation dose distribution and alpha-emitting dust inside the nuclear reactor is necessary to operate the decommissioning of FDNPP. Thus, we have developed an alpha-ray imaging detector with high positional resolution consisting of a scintillation sheet, optical microscope and Complementary Metal Oxide Semiconductor (CMOS) camera (ORCA-Flash4.0 V3, Hamamatsu).
To obtain the high-resolution imaging, high-light output scintillator is required, and Cs3Cu2I5 (CCI) was selected as the scintillator for the alpha detector in this time owing to a high light output of 41,500 photon/MeV. Moreover, this material has been applied to high-resolution X-ray imaging techniques. In this paper, we show the feasibility study on the application of the CCI scintillator for alpha-ray imaging.

Primary author

Mr Yusuke Urano (Graduate School of Engineering, Tohoku University)


Dr Akihiro Yamaji (Institute for Materials Research (IMR), Tohoku University) Dr Akira Yoshikawa (Institute for Materials Research (IMR), Tohoku University) Dr Shunsuke Kurosawa (Institute for Materials Research (IMR), Tohoku University) Dr Yuntao Wu (Artificial Crystal Research Center Shanghai Institute of Ceramics, Chinese Academy of Sciences)

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