Femtosecond control of an elementary unimolecular reaction from the transition-state region
✍ Scribed by J.L. Herek; A. Materny; A.H. Zewail
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 908 KB
- Volume
- 228
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
✦ Synopsis
We present a simple example of temporal control of the evolving dynamics in a reactive system -a unimolecular reaction with two channels. Using three femtosecond pulses, a wave packet is prepared, probed, and intercepted in the transition-state region.
The femtosecond control pulse intercepts the predissociative system at a fixed time and internuclear separation, both determined by the 'window' of the laser pulse. Experiments are performed on the NaI system which is a prototype for studies of elementary nuclear motion and reaction dynamics along two potentials, the covalent (Na + I) and the ionic (Na + + I -) channels.