Numéro
J. Phys. IV France
Volume 05, Numéro C1, Janvier 1995
Europhysics Industrial Workshop EIW-12
Industrial Applications of Positron Annihilation
Page(s) C1-171 - C1-175
DOI https://doi.org/10.1051/jp4:1995120
Europhysics Industrial Workshop EIW-12
Industrial Applications of Positron Annihilation

J. Phys. IV France 05 (1995) C1-171-C1-175

DOI: 10.1051/jp4:1995120

Positron Annihilation Measurements on Nuclear Reactor Pressure Vessel Steels

L. 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


Abstract
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.



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