| dc.contributor.advisor | Wodtke, Alec Prof. Dr. | |
| dc.contributor.author | Wagner, Roman Jonathan Viktor | |
| dc.date.accessioned | 2019-04-26T08:40:28Z | |
| dc.date.available | 2019-04-26T08:40:28Z | |
| dc.date.issued | 2019-04-26 | |
| dc.identifier.uri | http://hdl.handle.net/11858/00-1735-0000-002E-E619-C | |
| dc.identifier.uri | http://dx.doi.org/10.53846/goediss-7411 | |
| dc.identifier.uri | http://dx.doi.org/10.53846/goediss-7411 | |
| dc.language.iso | eng | de |
| dc.publisher | Niedersächsische Staats- und Universitätsbibliothek Göttingen | de |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject.ddc | 540 | de |
| dc.title | The Dynamics of Highly Vibrationally Excited CO Scattered from Metal Surfaces | de |
| dc.type | doctoralThesis | de |
| dc.contributor.referee | Wodtke, Alec M. Prof. Dr. | |
| dc.date.examination | 2019-04-09 | |
| dc.description.abstracteng | Supersonic molecular beams of highly vibrationally excited CO are scattered from atomically
clean Au(111) and Ag(111) surfaces. Specifically, incident CO is prepared in the
(v = 17, J = 0) state of the electronic ground state. Scattered molecules are detected quantum state-selectively
by means of resonance-enhanced multi-photon ionization. Final vibrational state distributions
and rotational state distributions are presented as well as time-of-flight distributions
and angular distributions. Rotationally hot scattering products, narrow angular
distributions, and final translational energies consistent with the Baule limit indicate
a direct scattering mechanism. The vibrational relaxation probability of CO(v = 17)
at Ag(111) is higher than that at Au(111). For both metals, the vibrational relaxation
probability increases with incidence translational energy. The incidence translational
energy dependence is more pronounced for Au(111) than for Ag(111). The comparison
to previously studied molecule-surface systems—including two molecules (CO
and NO), two surfaces (gold and silver), and various incidence vibrational excitations
(ranging from v = 2 to v = 17)—reveals a unifying trend, according to which the vibrational relaxation
probability depends on both the work function of the surface and the electron binding energy
of the molecule. This strongly suggests that an electron transfer process is essential
to the electronically non-adiabatic coupling between molecular vibration and electronic
degrees of freedom of the surface. Thus, for a single-bounce collision event with a metal
surface, the vibrational relaxation probability of a diatomic molecule can be predicted
simply by evaluating energetic quantities characterizing the isolated molecule and surface.
This allows easy identification of molecule-surface systems in which non-adiabatic
surface dynamics are likely to be governed by electron transfer. | de |
| dc.contributor.coReferee | Schwarzer, Dirk Prof. Dr. | |
| dc.contributor.thirdReferee | Behler, Jörg Prof. Dr. | |
| dc.contributor.thirdReferee | Geil, Burkhard Prof. Dr. | |
| dc.contributor.thirdReferee | Kitsopoulos, Theofanis N. Prof. Dr. | |
| dc.contributor.thirdReferee | Troe, Jürgen Prof. Dr. | |
| dc.subject.eng | Dynamics at Surfaces | de |
| dc.subject.eng | Molecular Beam Surface Scattering | de |
| dc.subject.eng | Energy Transfer | de |
| dc.subject.eng | Highly Vibrationally Excited CO | de |
| dc.subject.eng | Vibrational Relaxation | de |
| dc.subject.eng | Electron Transfer | de |
| dc.subject.eng | REMPI Spectroscopy | de |
| dc.subject.eng | Stark Deceleration | de |
| dc.identifier.urn | urn:nbn:de:gbv:7-11858/00-1735-0000-002E-E619-C-4 | |
| dc.affiliation.institute | Fakultät für Chemie | de |
| dc.subject.gokfull | Chemie (PPN62138352X) | de |
| dc.identifier.ppn | 1666650609 | |