| 摘要 |
Device and apparatus for measuring the enrichment profile of a nuclear fuel rod. Thermal neutrons are used for measurement. The rod (12) comprises a longitudinal stack of fuel pellets (48). The invention uses a neutron absorbing shield (34) relative to which the rod is moved and which is provided to protect a longitudinal region of the stack against the thermal neutrons with the exception of one or more pellets included in this region, with a view to detecting the radiation they emit by interaction with the thermal neutrons and hence to deducing the enrichment profile. |
