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Jukes, P, Buxey, A, Jones, A B and Stace, A J (1998) Towards a complete description of multiple dissociation events: a photoion–photoneutral (pi-pn3) coincidence study of Ar4+. Journal of Chemical Physics, 109 (14). 5803 - 5811. ISSN 0021-9606
Full text not available from this repository.Abstract
By 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.
| Item Type: | Article |
|---|---|
| Keywords: | argon; positive ions; photodissociation; photoexcitation; photoionisation |
| Schools and Departments: | School of Life Sciences > Chemistry |
| Depositing User: | EPrints Services |
| Date Deposited: | 06 Feb 2012 19:33 |
| Last Modified: | 20 Sep 2012 14:01 |
| URI: | http://sro.sussex.ac.uk/id/eprint/21284 |