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Lookup NU author(s): Professor Ken Snowdon, Adam Golichowski
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The interaction of 6 keV CH+ with a Cu(111) surface and 3 keV H3+ and 2.3 keV C4H10+ with a Pt(111) surface under glancing incidence conditions (surface normal energies of 0.7 eV and 4 eV) is examined. In this geometry, the contribution of the direct "collision induced" dissociation mechanisms is minimal. We find strong evidence for direct dissociation of H3+ via charge capture to the dissociative 2p, 2E′ ground state. The surface-induced dissociation of CH+ and C4H10+ appears to proceed via two steps, namely charge capture to a bound state of the neutral molecule, followed by the transfer of translational energy into a vibrational co-ordinate of the molecule. We propose that this T-V energy transfer occurs via repeated inelastic electron scattering events. © 1998 Elsevier Science B.V.
Author(s): Snowdon KJ, Golichowski AP, Harder R, Nesbitt A
Publication type: Article
Publication status: Published
Journal: International Journal of Mass Spectrometry and Ion Processes
Year: 1998
Volume: 174
Issue: 1-3
Pages: 73-80
Print publication date: 01/03/1998
ISSN (print): 0168-1176
ISSN (electronic): 1873-2798
Publisher: Elsevier BV
URL: http://dx.doi.org/10.1016/S0168-1176(97)00291-7
DOI: 10.1016/S0168-1176(97)00291-7
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