Quasi-small-angle scattering on atomic particles

The trajectory of straight-line motion of a incident particle passing through a point of maximum distance of approach is considered. A formula has been obtained for this trajectory, which determines the dependence of the particle deflection angle upon the collision parameters. The coordinates of the maximum distance of approach point and deflection angle for power law interaction potentials have been calculated. It is shown that the formula obtained gives the deflection angle values which are intermediate between real values and those calculated in terms of the small-angle approximation