Ichiro  Tanaka,Kenji  Kikuchi,Masakazu Komatsuzaki,Nobuo  NIIMURA,Takashi  ONIZAWA,
Detection of Radioactive Cesium on Granular Particle using Autoradiography, Germanium detector and Energy dispersive X-ray spectrometry
Radiology and Medical Diagnostic Imaging
2018
2613-7836
http://dx.doi.org/10.31487/j.RDI.2018.10.004
https://www.sciencerepository.org/detection-of-radioactive-cesium-on-granular-particle-using-autoradiography-germanium-detector-and-energy-dispersive-x-ray-spectrometry_RDI-1-104 
Abstract: Radioactive Cesium (Cs*) on granular particles were detected using autoradiography, Germanium detector
and energy dispersive X-ray spectrometry. The granular particle was included in the suspension of the
rainwater tank, which was collected 20 months after the explosion of the Fukushima Dai-ichi Nuclear Power
Plant (FDNPP) triggered by the earthquake and following Tsunami on 11 March 2011. The particles are a
compound of the silicon oxide and compound of the silicon oxide with Aluminum and Magnesium,
respectively. Particle shape was not round but roughly granular with a size of 20μm. The particles are
included at the rainwater tank at Ohkuma near FDNPP. The Cs*granular particles are proven to originate to
the FDNPP investigating the ratio of Cs137 and Cs134Keywords: Radioactive cesium, granular particle, autoradiography, germanium detector, energy dispersive X-ray spectrometry, microscopy, FDNPP