TY - JOUR
T1 - Application of micron X-ray CT based on micro-PIXE to investigate the distribution of Cs in silt particles for environmental remediation in Fukushima Prefecture
AU - Ishii, Keizo
AU - Hatakeyama, Taisuke
AU - Itoh, Shin
AU - Sata, Daichi
AU - Ohnuma, Tohru
AU - Yamaguchi, Toshiro
AU - Arai, Hiromu
AU - Arai, Hirotsugu
AU - Matsuyama, Shigeo
AU - Terakawa, Atsuki
AU - Kim, Seong Yun
N1 - Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2016/3/15
Y1 - 2016/3/15
N2 - We used X-ray computed tomography (CT) using characteristic X-rays produced in micro-particle-induced X-ray emission (PIXE) to investigate the internal structure of silt particles and develop new methods to decontaminate soil containing radioactive cesium. We obtained 3D attenuation coefficient images of silt particles with a diameter of approximately 100 μm for V K and Cr K X-rays. Owing to the absorption edges of the Cs L-shell, the differences between the V K and Cr K X-ray images revealed the spatial distribution of Cs atoms in the silt particles. Cs atoms were distributed over the surfaces of the silt particles to a thickness of approximately 10 μm. This information is useful for the decontamination of silt contaminated by radiation from the Fukushima Daiichi nuclear disaster.
AB - We used X-ray computed tomography (CT) using characteristic X-rays produced in micro-particle-induced X-ray emission (PIXE) to investigate the internal structure of silt particles and develop new methods to decontaminate soil containing radioactive cesium. We obtained 3D attenuation coefficient images of silt particles with a diameter of approximately 100 μm for V K and Cr K X-rays. Owing to the absorption edges of the Cs L-shell, the differences between the V K and Cr K X-ray images revealed the spatial distribution of Cs atoms in the silt particles. Cs atoms were distributed over the surfaces of the silt particles to a thickness of approximately 10 μm. This information is useful for the decontamination of silt contaminated by radiation from the Fukushima Daiichi nuclear disaster.
KW - Decontamination of radioactive soil
KW - Fukushima Daiichi nuclear disaster
KW - Micro-PIXE
KW - Radioactive pollution
KW - X-ray micron CT
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U2 - 10.1016/j.nimb.2015.09.054
DO - 10.1016/j.nimb.2015.09.054
M3 - Article
AN - SCOPUS:84960260864
SN - 0168-583X
VL - 371
SP - 387
EP - 391
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
ER -