State-Resolved Rotational Excitation in HD + HD Collisions

Abstract
A novel pulsed-molecular-beam technique has been used to measure differential cross sections for state-resolved rotational transitions in HD + HD collisions. Inelastic transition probabilities are reported for the rotation-energy-level transitions JAJB=00JAJB=(10, 01), 11, and (20, 02) at a center-of-mass scattering angle at 90° and at several collision energies. A brief description of the apparatus is provided.