CLASSICAL TRAJECTORY DESCRIPTION OF THE DYNAMICS OF THE AUTOIONIZATION EVENT IN HE(2(3)S)-D-2 PENNING IONIZATION

A theoretical picture of the dynamics of the autoionization event He(2 (3)S)-D-2(nu '' = 0) --> [He...D-2(+)(nu')] + e(-) is obtained for a c ollision energy ranging from 10 to 150 meV (average approximate to 51 meV). The treatment of the dynamics consists; of 2D classical trajecto ry calculations based on static characteristics which include a quantu m mechanical treatment of the perturbed D-2(nu '' = 0) and D-2(+)(nu') vibrational motion. The nascent vibrational populations are dynamical averages over the local widths of the He(2(3)S)-D-2(nu '' = 0) state with respect to autoionization to D-2(+)(...He) in its vth vibrational level and the Penning electron energies are related to the local diff erences between the energies of the corresponding perturbed D-2(nu '' = 0)(...He) and D-2(+)(nu')(...He) vibrational states. The picture of the He(2(3)S)-D-2(nu '' = 0) ionization event is consistent with that provided by a recent Penning measurement. The present set of theoreti cal nascent Penning ion populations is more complete.