TY - JOUR
T1 - Molecular desorption in bombardment mass spectrometries
AU - Taylor, Ramona S.
AU - Brummel, Christopher L.
AU - Winograd, Nicholas
AU - Garrison, Barbara J.
AU - Vickerman, John C.
PY - 1995/2/24
Y1 - 1995/2/24
N2 - Molecular dynamics simulations have been performed to gain microscopic insight into those factors which influence the ejection due to ion bombardment of molecules adsorbed on solid substrates. The specific system modeled is a pentylidyne (C5H9) film adsorbed on Pt{111} and C{111}. Lowering the binding energy of the film to the substrate from 2.7 to 0.6 eV increases the total yield of ejected particles. The bombardment of the film bound by 2.7 eV results in considerable fragmentation of the C5H9 adsorbate while the bombardment of the film bound by 0.6 eV results in the desorption of the intact molecular adsorbate.
AB - Molecular dynamics simulations have been performed to gain microscopic insight into those factors which influence the ejection due to ion bombardment of molecules adsorbed on solid substrates. The specific system modeled is a pentylidyne (C5H9) film adsorbed on Pt{111} and C{111}. Lowering the binding energy of the film to the substrate from 2.7 to 0.6 eV increases the total yield of ejected particles. The bombardment of the film bound by 2.7 eV results in considerable fragmentation of the C5H9 adsorbate while the bombardment of the film bound by 0.6 eV results in the desorption of the intact molecular adsorbate.
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U2 - 10.1016/0009-2614(94)01469-C
DO - 10.1016/0009-2614(94)01469-C
M3 - Article
AN - SCOPUS:0000591561
VL - 233
SP - 575
EP - 579
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 5-6
ER -