One of the requirements of a future Fissile Material Cutoff Treaty is that fissile material used in naval reactor fuel must not be diverted for weapons purposes. This could become relevant for both weapon and non-weapon states of the NPT because, in both cases, the geometry of the fuel and core may be considered sensitive information. Inspections and measurements would therefore have to rely on...

How neutrons interact with matter aflkcts the ways in which assays can be pdormed with neutrqs. Neutron interactions with the assay material affkct the interpretation of neutron measurements and limit the amount of fissile material the assay instrument can contain safely. A neutron detector is based on some neutron interaction with the material in the detector. Also, neutron interactions with s...

issues. These include the material employed in the reactor walls, the cladding material for the fissile nuclear fuel, and the material used for retaining the fission products. In addition to long term resistance to irradiation, the materials used in a nuclear reactor must have excellent mechanical and corrosion properties in order to tolerate the thermal shocks as well as the high temperature a...

The neutronic performance of small size critical dedicated burners is investigated here according to the type of recycling performed (MA supply alone or together with some fissile element), the nature of the possible fissile supply (Pu, enriched U, U bred from Th), the coolant type (sodium or lead). The main neutronic parameters are given, such as reactivity coefficients, together with mass bal...