Thermal energy atomic scattering (TEAS) on solid surface [1] is investigated. The atomic beam is described by Gaussian wave-packet as an ensemble of independent particles. The atom - solid surface interaction is characterised by an interaction potential. The interaction potential provides the properties of ideally periodic and disordered surfaces, respectively. The scattering process is governed by time dependent Schrödinger equation that is solved numerically in the case of two- and three-dimensional coordinate space [2][3][4]. The above-described model provides not only the quantitative intensity distribution but also the animation of the interaction as the time progresses. Attractive pictures show the scattering process at the interaction region and at the detector region, respectively. The effect of relative velocity spread, surface disorder and thermal vibration can be investigated efficiently.

[1] D. Farías and K.H. Rieder, Rep. Prog. Phys. Vol. 61 (1998) p. 1575-1664.

[2] G. Varga, Applied Surface Science, (1999) vol.144-145 p. 64-68.

[3] G. Varga, Surface Science, (1999) vol. 441 p. 472-478.

[4] G. Varga, Home Page, Scattering animations (2000): http://goliat.eik.bme.hu/~vargag/