Author/Authors :
Van Hoorebeke، نويسنده , , L. and Fabry، نويسنده , , A. and van Walle، نويسنده , , E. and Van de Velde، نويسنده , , J. and Segers، نويسنده , , D. and Dorikens-Vanpraet، نويسنده , , L.، نويسنده ,
Abstract :
An advanced positron lifetime setup is described, particularly suited to perform measurements on irradiated nuclear reactor pressure vessel steel. The equipment exists of three BaF2-detectors operated in triple coincidence mode to avoid the very disturbing 60Co-contribution in the lifetime spectra. The use of BaF2 scintillators gives rise to an acceptable efficiency and a time resolution well below 300 ps.
