  Features of the angular distributions of accelerated atomic projectiles at
grazing angles of incidence on the crystal surface are studied by using the
computer simulation. The interaction between the projectiles and the
crystal-lattice atoms and atomic structure of the crystal surface are
calculated by means of the electron density functional method. The angular
distributions of scattered projectiles are simulated by taking into account
their interaction with several atomic layers in the crystal lattice and atomic
thermal displacements. Good agreement between the calculated results and known
experimental data is achieved. A possibility of reconstructing the ion-atom
dynamic interaction potential from the dependence of the rainbow scattering
angle of nitrogen atoms under conditions of grazing incidence on the surface of
an aluminum crystal on the total kinetic energy of the accelerated atomic
particles is shown.
