Saddle-point resonances in few-body systems

✍ Scribed by J.M. Rost; J.S. Briggs

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 489 KB
• Volume: 177
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(91)85038-x

✦ Synopsis

The generality of resonance formation due to localisation on saddle points of a many-dimensional potential surface governing the motion of few-body systems is demonstrated. Adiabatic potential curves show sequences of avoided crossings. It is shown how diabatic potentials connecting these crossings can be constructed corresponding to preservation of motion on the saddle and leading to a higher degree of fragmentation of the complex. The method is illustrated by calculation of vibrational resonances in type ABA molecules and doubly excited electronic resonances in two-electron atoms.