Design, development and utilisation of a tomography station for γ-ray emission and transmission analyses of light water reactor spent fuel rods

Finally and in addition to the tomographic reconstructions, the possibility to use single isotope activities, and/or isotopic concentration ratios from 134Cs, 137Cs, and 154Eu, as burnup indicators at very high and ultra-high burnups, has also been investigated. This paper presents in a comprehensive manner the large panel of analysis performed for this interesting set of spent fuel samples which represents a valuable experimental insight in the physics of ultra-high burnups.