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Microscopic studies of atom-water collisions

Wang, Z. P.; Dinh, P. M.; Reinhard, P. -G.; Suraud, E.; Bruny, G.; Montano, C.; Feil, S.; Eden, S.; Abdoul-Carime, H.; Farizon, B.; Farizon, M.; Ouaskit, S. and Märk, T. D. (2009). Microscopic studies of atom-water collisions. International Journal of Mass Spectrometry, 285(3) pp. 143–148.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1016/j.ijms.2009.05.008
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Abstract

The influences of water molecules surrounding biological molecules during irradiation with heavy particles (atoms, ions) are currently a major subject in radiation science on a molecular level. In order to elucidate the underlying complex reaction mechanisms, we have initiated a joint experimental and theoretical investigation with the aim to make direct comparisons between experimental and theoretical results. As a first step, studies of collisions of a water molecule with a neutral projectile (C atom) at high velocities (≥0.1 a.u.), and with a charged projectile (proton) at low velocities (≤0.1 a.u.) have been studied within the microscopic framework. In particular, time-dependent density functional theory (TDDFT) was applied to the valence electrons and coupled non-adiabatically to molecular dynamics (MD) for ionic cores. Complementary experimental developments have been carried out to study projectile interactions with accelerated (≤10 keV) and mass-selected cluster ions. The first size distributions of protonated water cluster ions H+(H2O)n(n = 2–39) produced using this new apparatus are presented.

Item Type: Journal Article
Copyright Holders: 2009 Elsevier
ISSN: 1387-3806
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetDeutsche Forschungsgemein [RE 322/10-1]
Not SetNot SetAgence Nationale de la Recherche [ANR-06-BLAN-0319-02]
Keywords: water clusters; collision dynamics; collision induced dissociation; collision induced ionization
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 25751
Depositing User: Sam Eden
Date Deposited: 21 Dec 2010 21:06
Last Modified: 22 Nov 2012 17:17
URI: http://oro.open.ac.uk/id/eprint/25751
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