par Chau, Thoi-Dai ;Visart de Bocarmé, Thierry ;Kruse, Norbert ;Wang, Richard L.C.;Kreuzer, Hans-Juergen
Référence The Journal of Chemical Physics, 119, 23, page (12605)
Publication Publié, 2003-12-15
Référence The Journal of Chemical Physics, 119, 23, page (12605)
Publication Publié, 2003-12-15
Article révisé par les pairs
Résumé : | We show that gold mono- and di-carbonyls are formed on gold field emitter tips during interaction with carbon monoxide gas at room temperature and in the presence of high electrostatic fields. The experiments are done in a time-of-flight atom probe to obtain mass spectra. The yield of monocarbonyl cations is about twice that of di-carbonyl ions. Density functional theory calculations are reported that explain the field stabilization of adsorbed carbonyls and the desorption yield of their cations. |