Defect production considerations for gamma ray irradiation of reactor pressure vessel steels

摘要: Abstract Motivated by the recent interest in gamma ray embrittlement of nuclear reactor pressure vessels (RPVs), calculations were performed to evaluate aspects defect production gammas iron and steel. In addition determining displacement damage cross-sections, atomic recoil energy dependence gamma-induced was described integral spectra, W(T), their associated median energies, T1/2. These latter characterizations, should be particularly useful evaluating contribution generated defects microstructural changes causing radiation embrittlement. The results for monoenergetic gammas, as well rays with a spectrum energies characteristic RPV, reveal T1/2 values