Dissociative charge transfer and collision induced dissociation of Ar{sub 2}{sup +} and Ar{sub 3}{sup +} clusters in collisions with argon atoms at keV energies
- Laboratoire des Collisions Atomiques et Moleculaires, Unite Mixte de Recherche C8625, Batiment 351, Universite Paris-Sud XI, 91405 Orsay Cedex (France)
The dynamics of dissociative charge transfer and collision induced dissociation of Ar{sub 2}{sup +} and Ar{sub 3}{sup +} clusters colliding with Ar atoms at 4.8 keV has been investigated using a novel multifragment detection scheme that maps the postcollision vectors of all particles simultaneously. Estimation of internal energies and measurement of pre- and postcollision vectors enables a full description of reaction dynamics. The prominence of electronic excitation in defining the dynamics of these collision systems is demonstrated. The dissociation dynamics of Ar{sub 3}{sup +} clusters is distinctly different from that of Ar{sub 2}{sup +}. This is attributed to a combination of lower internal energies and predominantly triangular T-shape structure of the Ar{sub 3}{sup +} ion.
- OSTI ID:
- 20783268
- Journal Information:
- Journal of Chemical Physics, Vol. 124, Issue 16; Other Information: DOI: 10.1063/1.2191039; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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