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Determination of collision mechanisms at low energies using four-vector correlations

Jambrina, P. G.; Croft, J. F. E.; Balakrishnan, N.; Guo, Hua; Aoiz, F. J.

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Authors

P. G. Jambrina

Dr James Croft james.f.croft@durham.ac.uk
Postdoctoral Research Associate

N. Balakrishnan

Hua Guo

F. J. Aoiz



Abstract

In molecular dynamics, a fundamental question is how the outcome of a collision depends on the relative orientation of the collision partners before their interaction begins (the stereodynamics of the process). The preference for a particular orientation of the reactant complex is intimately related to the idea of a collision mechanism and the possibility of control, as revealed in recent experiments. Indeed, this preference holds not only for chemical reactions involving complex polyatomic molecules, but also for the simplest inelastic atom–diatom collisions at cold collision energies. In this work, we report how the outcome of rotationally inelastic collisions between two D2 molecules can be controlled by changing the alignment of their internuclear axes under the same or different polarization vectors. Our results demonstrate that a higher degree of control can be achieved when two internuclear axes are aligned, especially when both molecules are relaxed in the collision. The possibility of control extends to very low energies, even to the ultracold regime, when no control could be achieved just by the alignment of the internuclear axis of one of the colliding partners.

Citation

Jambrina, P. G., Croft, J. F. E., Balakrishnan, N., Guo, H., & Aoiz, F. J. (2024). Determination of collision mechanisms at low energies using four-vector correlations. Faraday Discussions, https://doi.org/10.1039/d3fd00173c

Journal Article Type Article
Acceptance Date Feb 19, 2024
Online Publication Date Feb 20, 2024
Publication Date Feb 20, 2024
Deposit Date Jun 11, 2024
Publicly Available Date Jun 11, 2024
Journal Faraday Discussions
Print ISSN 1359-6640
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
DOI https://doi.org/10.1039/d3fd00173c
Public URL https://durham-repository.worktribe.com/output/2480362

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