Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5423745 | Surface Science | 2009 | 6 Pages |
Abstract
Photon stimulated ion desorption (PSID) studies have been performed in condensed formic acid using oxygen 1s-edge synchrotron radiation from the Brazilian synchrotron light source (LNLS), operating in a single-bunch mode. Ion formation was discussed in terms of the Auger stimulated ion desorption (ASID) and X-ray induced electron stimulated desorption (XESD) mechanisms. It is found that O 1s(C-OH) â Ï*(CO) and O 1s(CO) â 3s/Ï*(HCO) transitions favored the production of C+, CH+, O+, Oâ and Hâ ions. The hydroxyl anion has not been observed while the hydroxyl cation showed low intensity or was absent. Some anion formation routes from dissociative reactions are suggested taking into account the positive ion yields.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
D.P.P. Andrade, H.M. Boechat-Roberty, S. Pilling, E.F. da Silveira, M.L.M. Rocco,