Neutron physics experiments in critical assemblies in support of nuclear design and safety analysis for large breeder cores

The present article deals with: 1. neutronphysics experiments on large homogeneous and heterogeneous breeder cores, particular concerning the efficiency of control rods, areal distribution of nuclear power production and lost sodium effect; homogeneous design meaning that a core is surrounded by a breeder blanket that is axial and radial, heterogeneous design meaning that there are additional internal breeder-material zones in the core. - Experiments on neutronphysics consequences of material traversion occurring in assumed accident schemes. (orig./RW)