DEPENDENCE OF COLLISION DYNAMICS ON A SHORT-RANGE PART OF INTERACTION
POTENTIAL IN A COLLINEAR ATOM-MOLECULE COLLISIONS

Kunizo Onda

Faculty of Industrial Science and Technology,
Science University of Tokyo,
Oshamambe, Hokkaido 049-3514, Japan

We have investigated a vibrationally inelastic scattering, an atom-exchage
reaction, and dissociation processes in atom-diatomic molecule collisions
of a collinear configuration at the total energy up to 10 eV.  It is
clarified that the collision dynamics is extremely sensitive to the short
range part of the interaction potential energy surface employed for both
the collision systems of He + H$_2^+$ and H + H$_2$.