Classical trajectory description of the dynamics of the autoionization event in He(23S)-D2 Penning ionization

✍ Scribed by J. Vojtík; R. Kotal

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 526 KB
• Volume: 255
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(96)00373-9

✦ Synopsis

A theoretical picture of the dynamics of the autoionization event He(23S)-D2(v " = 0) ~ [He...D~-(v')] + e-is obtained for a collision energy ranging from 10 to 150 meV (average --51 meV). The treatment of the dynamics consists of 2D classical trajectory calculations based on static characteristics which include a quantum mechanical treatment of the perturbed D2(v"-0) and D~" (v') vibrational motion. The nascent vibrational populations are dynamical averages over the local widths of the He(23S)-D2(o " -0) state with respect to autoionization to D~-(...He) in its vth vibrational level and the Penning electron energies are related to the local differences between the energies of the corresponding perturbed D2(v"= 0X...He*) and D~-(v')(...He) vibrational states. The picture of the He(23S)-D2(v "-0) ionization event is consistent with that provided by a recent Penning measurement. The present set of theoretical nascent Penning ion populations is more complete.