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New statistical boundary conditions for argon-tungsten interactions
M S Ozhgibesov1, T S Leu, C H Cheng
1Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan, ROC. omiser@gmail.com
Abstract:
In this study, scattering processes of argon beam impinging on tungsten surface are investigated numerically by applying molecular dynamics (MD) simulations. Energy transfer, momentum change, and scattering processes of argon gas atoms from W(110) surface are discussed. A new model of argon-tungsten (Ar-W) interaction is proposed. Based on the new proposed model, one can simplify the boundary conditions of this problem. The new boundary conditions are proved to be in line with previous experimental and theoretical results. This paper demonstrates how to proceed normalization and further conversion of the MD simulation results into boundary conditions. Application of the new proposed boundary conditions for Ar-W interactions provides a significant speedup of computations.
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