I have investigated two different systems CO/Fe(100) and CO/Ru(0001), toobtain new information on the binding and desorption processes. The twodifferent systems have served as a model system, one for a static examination,CO on iron, and for the dynamic case, CO on ruthenium. To perform theseinvestigations, several types of techniques have been used such as, X-rayabsorption spectroscopy, X-ray emission spectroscopy, and femtosecond laserinduced desorption techniques such as two-pulse correlation. For the CO/Fe(100) system, we found that the on-top CO “<img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?%5Calpha" />1 phase” canbe described by the Blyholder-Nilsson-Pettersson model. The pre-dissociativephase of CO bound at hollow sites, “<img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?%5Calpha" />3 phase”, can be described in a Dewar-Chatt-Duncanson like picture. For the CO/Ru(0001) system, it was found that all our data could be fitted from an empirical friction heat bath model. Moreover, it turned out, thatthere is a strong frictional coupling to the substrate electrons and phonons.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:su-77218 |
| Date | January 2012 |
| Creators | Gladh, Jörgen |
| Publisher | Fysikum, Stockholm : Department of Physics, Stockholm University |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Licentiate thesis, monograph, info:eu-repo/semantics/masterThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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