Void formation during annealing of neutron-irradiated molybdenum

Abstract Examination by transmission electron microscopy of molybdenum specimens neutron-irradiated at 60°C with doses of 2·16 × 1018 and 10·6 × 1018 fast neutrons cm−2 has revealed the presence of voids with diameters up to 60 A. This observation corroborates earlier conclusions based on positron annihilation measurements.