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Towards a complete description of multiple dissociation events: a photoion–photoneutral (pi-pn3) coincidence study of Ar4+
journal contribution
posted on 2023-06-07, 23:23 authored by P Jukes, A Buxey, A B Jones, A J StaceBy combining the techniques of ion and fast neutral detection into a single coincidence experiment, it is demonstrated that the scattering patterns of all the fragments from a multiple dissociation event can be correlated. The power of this new technique is demonstrated using Ar4+ as an example, where photoexcitation generates a total of 7 possible reaction products, each of which is, in theory, distinguishable by charge and/or kinetic energy. The two ionic products are Ar+ and Ar2+, and whilst the latter ion emerges with a low kinetic energy and is isotropically scattered, Ar+ has associated with it both a significant spread in laboratory-frame kinetic energy and features indicative of anisotropic scattering. By selecting an appropriate laboratory-frame kinetic energy for either ion, coincident neutrals can be identified and energy-analyzed using a time-of-flight technique. The method reveals the presence of two separate fragmentation channels, one of which is concerted and the other sequential.
History
Publication status
- Published
Journal
Journal of Chemical PhysicsISSN
0021-9606Publisher
American Institute of PhysicsExternal DOI
Issue
14Volume
109Page range
5803 - 5811ISBN
0021-9606Department affiliated with
- Chemistry Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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