Thermal accommodation at cold Ar atoms collisions with small Fe clusters at different temperatures
Thermal accommodation coefficients at collisions of solitary argon atoms at room temperature with iron clusters at temperatures 200 2500 K are calculated. Molecular dynamics method is applied. Finnis Sinclair potential is used to describe interaction between iron atoms in clusters. The incident atom interacts with a cluster through the Buckingham potential. The number of incident atom trajectories is from 10000 to 100000. Initial velocities of incident atoms obey the Maxwell distribution. Thermal accommodation coefficient is calculated for 2 sizes of cluster, 9 and 27 atoms.