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15. 1. 1991.
Hard shape potentials from rotational state‐to‐state inelastic cross sections: A possible route to inversion
A two‐parameter hard shape potential has been deduced which reproduces previously reported rotationally inelastic integral cross sections for He–HF collisions. A potential optimized to the 0→1 and 0→2 cross sections at a collision energy of 41.4 meV reproduces well other Δj=±1 and ±2 cross sections at this energy and at 81.9 meV. The potential is quite close to the 81.9 meV contour surface of a published He–HF potential. If this surface is used to define the hard shape potential then, although the Δj=±2 and Δj=±3 cross sections are improved, the Δj=±1 cross sections are approximately 50% too large.