MFPR Model Parameters of the Athermal Irradiation-Induced Transport in Nuclear Fuels

Abstract:

Atomistic simulations of radiation impact due to collision cascades in oxide and nitride nuclear fuels are performed in this work using combination of Monte Carlo and molecular dynamics techniques. The key parameters of MFPR code models for the athermal self-diffusivity and irradiation-assisted fission product release from fuel are evaluated. The general solution of Olander's integro-differential equation for the knockout mechanism is developed, which allowed extension of the earlier approaches for the long-lived and stable nuclides.

• Periodical: Defect and Diffusion Forum (Volume 375)
• Pages: 71-83
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.375.71
• Online since: May 2017
• Authors: Vladimir I. Tarasov*, Pavel V. Polovnikov
• Keywords: Binary Collision Approximation, Irradiation-Induced Diffusion, Knockout, Molecular Dynamics, Nuclear Fuel, Recoil

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