This paper reports on the state-of-the-art of the main non-destructive assay (NDA)
techniques usually used for in-situ radiological characterization of nuclear facilities subject …

X-ray computed tomography (CT) is non destructive visualization inside the human body.
Recently, X-ray photon-counting CT (PC-CT) has drawn attention for reducing the high …

The detector suffers from pulse pileup by overlapping of the signals when it was used in high
radiation fields. The pulse pileup deteriorates the energy spectrum and causes count losses …

Since the accident at the Fukushima Daiichi Nuclear Power Plant∼ 10 years ago, various
studies have been conducted focusing on the decontamination of radioactive materials and …

We developed a pinhole type gamma camera, using a compact detector module of a
pixelated CdTe semiconductor, which has suitable sensitivity and quantitative accuracy for …

After Fukushima's nuclear disaster in Japan, the decontamination operation is successfully
ongoing, and restrictions from some areas were lifted in April 2017. However, the radiation …

To proceed with the decommissioning of the Fukushima Daiichi Nuclear Power Station, it is
necessary to visualize radioactive substances using a gamma camera in high-dose-rate …

In high radiation fields, gamma cameras suffer from pulse pile-up, resulting in poor energy
resolution, count losses, and image distortion. To overcome this problem, various methods …

Abstract The Fukushima Daiichi Nuclear Power Plant was severely damaged during the
2011 Great East Japan Earthquake. However, the ongoing decommissioning work has been …

There is generally strong radioactivity during nuclear emergency. When the nuclear
emergency robots work in this case, many devices will fail because of the high radiation …