Development of a compact analytical device basedon silicon driftdetector for determination ofelectron-capture decay radionuclides

Nitta, Ayako; Katsuki, Kenta; Aita, Rena; Tanaka, Kosuke  ; Furuse, Takahiro

Silicon drift detectors (SDD) are widely used in energy-dispersive X-ray analysis owing to their high resolution and high detection efficiency in detecting low-energy photons. In addition, because the detector is cooled using a Peltier element, it enables a compact device configuration. Utilizing these features, we developed a compact analytical device for electron capture decay radionuclides such as Ca-41 and Mo-93 via their characteristic X-ray emission. The analytical system was first demonstrated with Ca-41 and evaluated its applicability to the analysis of radioactive waste from the Fukushima Daiichi Nuclear Power Station (1FNPS).