Semiclassical time-correlation function approach to collisional energy transfer into many-atom systems

✍ Scribed by David A. Micha

• Publisher: John Wiley and Sons
• Year: 1983
• Tongue: English
• Weight: 419 KB
• Volume: 23
• Category: Article
• ISSN: 0020-7608
• DOI: 10.1002/qua.560230225

✦ Synopsis

Abstract

Cross sections for energy transfer into many‐body systems can be expressed in terms of time‐correlation functions (TCFS) of transition operators. A semiclassical version is presented by treating internal motions as quantized and relative motions as classical. The time evolution of internal motions can be calculated in the Heisenberg picture and avoids expansions in target states. The decoupling of fast and slow internal motions is treated and applied to vibrational–rotational decoupling in polyatomic molecules. Results are presented for Li^+^‐CO~2~ collisions.