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Report No.

Lattice expansion in ZrN and Dy$$_{0.3}$$Zr$$_{0.7}$$N irradiated by 200 MeV Xe ions

Takaki, Seiya  ; Takano, Masahide ; Ishikawa, Norito   

NaCl-type structured nitrides, such as ZrN and TiN, have potential applications to inert matrix fuels for the transmutation of minor actinides (MA) in accelerator-driven systems (ADS), because of their excellent thermal properties. Understanding of radiation damage with fission fragments is one of the essentials to clarify the microstructural stability of those materials under high-density electronic excitation induced by swift heavy ions. However, very little information about such damage in nitride fuels is available. The present study aims to obtain the knowledge of high-density electronic excitation damage in nitride fuels. XRD analysis has shown that the lattice parameter and the lattice strain of the irradiated ZrN and Dy$$_{0.3}$$Zr$$_{0.7}$$N increase with increasing ion fluence.



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