Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5396007 | Journal of Electron Spectroscopy and Related Phenomena | 2014 | 15 Pages |
Abstract
We study the break up of OCS in intense femtosecond laser radiation using the FEMPULS technique to vary the laser pulse duration from 7Â fs to 200Â fs. Newton and Dalitz plots show the progression of molecular deformation and break up for OCS3+ and OCS4+. For increasing pulse length, the concerted three body dissociation exhibits increasing bending, and the amount of stepwise dissociation decreases. For the longest pulses however the stepwise process increases again. Both phenomena can be interpreted in terms of the effect of the laser field on lower charge states and the behaviour of a wave packet on a saddle point potential. The experiment illustrates the ability of the Coulomb imaging method to track molecular geometry and dynamics and indicates a new path to laser control of molecular parameters.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Benji Wales, Ãric Bisson, Reza Karimi, Samuel Beaulieu, Ali Ramadhan, Mathieu Giguère, ZiJian Long, Wing-Ki Liu, Jean-Claude Kieffer, François Légaré, Joseph Sanderson,