Collision-induced dissociation of protonated water clusters

Berthias F, Buridon V, Abdoul-Carime H, Farizon B, Farizon M, Dinh PM, Reinhard PG, Suraud E, Märk TD (2014)

Publication Type: Journal article

Publication year: 2014

Journal

Physical Review A - Atomic, Molecular, and Optical Physics American Physical Society

Book Volume: 89

Article Number: 062705

Journal Issue: 6

DOI: 10.1103/PhysRevA.89.062705

Abstract

Collision-induced dissociation (CID) has been studied for protonated water clusters H+(H2O)n, with n = 2-8, colliding with argon atoms at a laboratory energy of 8 keV. The experimental data have been taken with an apparatus (Device for Irradiation of Molecular Clusters, 'Dispositif d'Irradiation d'Agrégats Moléculaire,' DIAM) that has been recently constructed at the Institut de Physique Nucléaire de Lyon. It includes an event-by-event mass spectrometry detection technique, COINTOF (correlated ion and neutral fragment time of flight). The latter device allows, for each collision event, to detect and identify in a correlated manner all produced neutral and charged fragments. For all the studied cluster ions, it has allowed us to identify branching ratios for the loss of i = 1 to i = n water molecules, leading to fragment ions ranging from H+(H2O)i=n-1 all the way down to the production of protons. Using a corresponding calibration technique we determine total charged fragment production cross sections for incident protonated water clusters H+(H2O)n, with n = 2-7. Observed trends for branching ratios and cross sections, and a comparison with earlier data on measured attenuation cross sections for water clusters colliding with other noble gases (He and Xe), give insight into the underlying dissociation mechanisms. © 2014 American Physical Society.

Authors with CRIS profile

Paul-Gerhard Reinhard Naturwissenschaftliche Fakultät

Involved external institutions

Université de Lyon (UDL) FR France (FR) Université Toulouse III - Paul Sabatier FR France (FR) Leopold-Franzens-Universität Innsbruck / University of Innsbruck AT Austria (AT)

How to cite

APA:

Berthias, F., Buridon, V., Abdoul-Carime, H., Farizon, B., Farizon, M., Dinh, P.M.,... Märk, T.D. (2014). Collision-induced dissociation of protonated water clusters. Physical Review A - Atomic, Molecular, and Optical Physics, 89(6). https://doi.org/10.1103/PhysRevA.89.062705

MLA:

Berthias, F., et al. "Collision-induced dissociation of protonated water clusters." Physical Review A - Atomic, Molecular, and Optical Physics 89.6 (2014).

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