Atomistic Simulation of the Fission-Fragment-Induced Formation of Defects in a Uranium–Molybdenum Alloy

• Published in: Journal of experimental and theoretical physics 2019-07, Vol.129 (1), p.59-65
• Main Authors: Kolotova, L. N., Starikov, S. V., Ozrin, V. D.
• Format: Article
• Language: English
• Subjects: Analysis; BINARY ALLOY SYSTEMS; Cascades; Classical and Quantum Gravitation; COLLISIONS; Collisions (Nuclear physics); Computer simulation; COMPUTERIZED SIMULATION; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DEFECTS; Elementary Particles; Fission; FISSION FRAGMENTS; ION BEAMS; Ion irradiation; IRRADIATION; Molybdenum; Molybdenum alloys; Molybdenum base alloys; MOLYBDENUM COMPOUNDS; MONTE CARLO METHOD; Monte Carlo simulation; Nonferrous metals; Nuclear energy; Nuclear facilities; Nuclear reactors; Particle and Nuclear Physics; PHYSICAL RADIATION EFFECTS; Physics; Physics and Astronomy; Quantum Field Theory; Radiation; Radiation damage; Relativity Theory; Solid State Physics; Solids and Liquids; Spikes (lattice defects); STOPPING POWER; THERMAL SPIKES; Uranium; URANIUM COMPOUNDS; Xenon; XENON IONS; Zirconium; ZIRCONIUM IONS
• ISSN: 1063-7761; 1090-6509
• DOI: 10.1134/S1063776119060128

The formation of defects in a uranium–molybdenum alloy induced by xenon and zirconium ion irradiation with energies typical of fission fragments has been simulated within the two-temperature atomistic model and Monte Carlo method. This has allowed estimating the total number of primary radiation defects formed at the “thermal spike” stage and in collision cascades for different temperatures. The calculated threshold stopping powers of ions responsible for the formation of defects at the thermal spike stage are in good agreement with the available theoretical and experimental data.