APPLICATION OF ATHERMAL RECOMBINATION CORRECTED DPA MODEL IN NUCLEAR DATA PROCESSING CODE NECP-ATLAS

The Displacement per Atom (DPA) is an important factor used to quantify the irradiation damage of materials. radiation energy production cross section obtained by nuclear data processing code essential calculate DPA Nuclear code, such as NJOY, adopts NRT-DPA model section. However, has several well-known limitation. Especially, number defects produced in energetic cascades metals only ~1/3 prediction. To improve precision accuracy calculation, state-of-the-art Athermal Recombination Corrected (ARC-DPA) adopted heat and module NECP-Atlas. ARC-DPA can be simply multiplying with new efficiency function. parameters function are material constants that determined for a given from Molecular Dynamics (MD) simulations or experiments. some materials MD firstly this paper. Numerical results show NECP-Atlas adopting agree well NJOY code. What’s more, provide more physically realistic descriptions primary defect simulation numerically.