Industrial Applications of Positron Annihilation
J. Phys. IV France 05 (1995) C1-171-C1-175
Positron Annihilation Measurements on Nuclear Reactor Pressure Vessel SteelsL. van Hoorebeke1, J. van de Velde1, D. Segers2, L. Dorikens-Vanpraet2 and S. Simula2, 3
1 SCK-CEN, Reactor Materials Research Unit, Boeretang 200, 2400 Mol, Belgium
2 RUG, Dep. of Subatomic and Radiation Physics, Proeftuinstraat 86, 9000 Gent, Belgium
3 Helsinki University of Technology, Lab. of Physics, Otakaari 1, 02150 Espoo, Finland
Positron Annihilation Spectroscopy is a valuable microscopic method to study radiation damage in nuclear reactor pressure vessel steels. At SCK.CEN, a new positron lifetime setup, suited to measure positron lifetimes in irradiated steel, is being constructed. The particularity of this setup is that the prompt count rate originating from the induced 60Co-activity in the steel is highly reduced. Some preliminary results obtained for unirradiated SA-508 steel are discussed.
© EDP Sciences 1995