DAMAGE REGION FORMATION IN FERRITIC STEELS INDUCED BY LIGHT-WATER REACTOR NEUTRON-SPECTRUM

A new theoretical model for damage region formation is proposed. The m odel is based on numerical solution of the Boltzmann transport equatio n for knocked-on atoms. A key point of this model is the selfconsisten t determination of subcascade overlapping energy E-over (the threshold energy for distinguished damage region formation). Damage region dens ity and size distributions in ferritic steels (Fe-0.2 wt% Cu and Fe-0. 2 wt% Cu-0.3 wt% Si) under neutron irradiation in light water reactor spectrum were calculated. (C) 1997 Elsevier Science B.V.