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Title: 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

Abstract

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.

Authors:
; ; ; ; ;  [1]
  1. Laboratoire des Collisions Atomiques et Moleculaires, Unite Mixte de Recherche C8625, Batiment 351, Universite Paris-Sud XI, 91405 Orsay Cedex (France)
Publication Date:
OSTI Identifier:
20783268
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 124; Journal Issue: 16; Other Information: DOI: 10.1063/1.2191039; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ARGON; ARGON IONS; ATOM-ATOM COLLISIONS; ATOMIC CLUSTERS; CATIONS; CHARGE EXCHANGE; DISSOCIATION; EXCITATION; KEV RANGE 01-10; REACTION KINETICS

Citation Formats

Ismail, I.M., Lepere, V., Barat, M., Fayeton, J.A., Picard, Y.J., and Wohrer, K. 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. United States: N. p., 2006. Web. doi:10.1063/1.2191039.
Ismail, I.M., Lepere, V., Barat, M., Fayeton, J.A., Picard, Y.J., & Wohrer, K. 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. United States. doi:10.1063/1.2191039.
Ismail, I.M., Lepere, V., Barat, M., Fayeton, J.A., Picard, Y.J., and Wohrer, K. Fri . "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". United States. doi:10.1063/1.2191039.
@article{osti_20783268,
title = {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},
author = {Ismail, I.M. and Lepere, V. and Barat, M. and Fayeton, J.A. and Picard, Y.J. and Wohrer, K.},
abstractNote = {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.},
doi = {10.1063/1.2191039},
journal = {Journal of Chemical Physics},
number = 16,
volume = 124,
place = {United States},
year = {Fri Apr 28 00:00:00 EDT 2006},
month = {Fri Apr 28 00:00:00 EDT 2006}
}