분체공학, 유동충, 고분자, 재료(무기, 유기) : Cu(100) 표면에 충격된 불활성 이온의 산란 특성에 관한 분자 전산 연구 = Powder Technology, Fluidized Bed, Polymers Materials(Inorganics, Organics) : Molecular Simulation Studies of Scattering Properties for Noble Gas Ions Impacted on Cu(100) Surfaces

다국어 초록 (Multilingual Abstract)

In this study, molecular dynamics simulations have been carried out to investigate the scattering properties of impacted ions on Cu(100) surfaces with the normal incident angle for various noble gas atoms including He, Ne, Ar, Kr and Xe. The initial kinetic energy of the projectile atoms was ranged from 100eV to 1,600eV. The simulation results are focused upon the scattering energy variations and angel dependencies according to the incident energy and the projectile mass. For light atoms(He and Ne), the ratio of the scattered to the incident projectile energy was in a good agreement with the theoretical prediction based on the binary collision approximation. However, in the low energy regime, the scattering trajectories of heavy atoms(Ar. Kr and Xe) were characterized by the multiple collisions with the top and the second layer surfaces. With increasing the initial kinetic energy and the projectile mass, the scattering energy and the probability distribution were shown to be sharp and narrow. The angle dependencies of both longitudinal and azimuthal directions were not significant for light projectiles, while the longitudinal angel dependencies on the scattering distribution were indicated for heavy progectiles.