Synergy Effect Study of Radiation Damage in Nuclear Materials

Key words: 
• nuclear material /
• multi-ion beam irradiation /
• synergy effect /
• irradiation damage

Abstract: In order to research the synergistic effect of radiation damage in nuclear materials, multi-ion beam irradiation behavior of ZrO2, SiC and ODS steels was characterized by Raman spectroscopy, Rutherford backscattering spectrometry/channeling, atomic force microscopy, transmission electron microscopy, and infrared spectroscopy. Irradiation swelling and damage of ZrO2 by dual ion beam were a linear superposition of two single ion beam irradiation, Raman spectra of SiC irradiated by dual ion beam simultaneously had greater peak width at half maximum than that of sequential irradiation. The ODS steels co-irradiated by three-beam (Si, He, H ions) induced the biggest swelling and hardening. Dual ion beam irradiation simultaneously induced a more significant synergistic effect than successively irradiation, multi-ion beam irradiation on ODS steel and Sic appeared a synergistic effect, the irradiation damage of ODS steels by multi-ion beam was more serious than the sum of single beam, the synergistic effects of three-beam (Si, He and H ions) were most obvious. Multi-ion beam irradiation could be used to simulate actual reactor irradiation environment. These results have some reference value for
neutron irradiation behavior of nuclear material in the actual reactors .