AN INVERSION PROCEDURE FROM ROTATIONAL TOTAL CROSS-SECTIONS

A hard shape potential has been used to interpret AS BC rotational ine lastic cross sections as a function of collision energy. These hard sh ape surfaces have been shown to be close to the classical turning poin ts of an appropriate soft potential, this providing st computationally simple route for deriving a soft potential. If the soft potential has exponential form then reducing the hard shape radii by an amount equa l to the inverse of the exponent improves the results.