INTERACTION OF ATOMS WITH SURFACE IN GRAZING COLLISIONS REGIME. THE
MECHANISM OF DESORPTION.

E.A.Andreev $^\ast$, F.I.Dalidchik $^\ast$,  M.Y.Knignikov$^\ast$

$^\ast$ N.N.Semenov Institute of Chemical Physics, Russian Academy of
Sciences,Kosygin str. 4, Moscow 117977, Russia 

The problem of vibration excitation of monolayer of physadsorbed atoms in
regime of grazing collisions is considered. The mechanism of desorption
induced by scattering atoms was investigated.