Showing papers on "Isotopes of boron published in 1970"

A study of neutron irradiation damage in copper and a dilute copper-boron alloy

Abstract: Transmission electron microscopy has been used to examine irradiation-induced damage in pure copper and in a solid solution copper-0.001 w/o boron alloy after simultaneous neutron irradiation to an integrated fast neutron dose of 1.1 × 1020 cm−2 at ∼ 60°c. The results demonstrate that the resolvable damage differs considerably in these materials, both in its initial distribution and in its post-irradiation annealing behaviour these differences are considered to be a consequence of the transmutation of the boron-10 atoms in the alloy. After post-irradiation annealing, the damage in both materials clearly consists of two components; coarsely distributed dislocation segments and loops and a finer distribution of small clusters. The annealing behaviour of both components has been examined closely after annealing between 350°c and 650°c, the temperature range in which the principal changes occurred, and the morphology and nature of the loops comprising the coarser component have been determined. Consi...