Objective
This project is the continuation of a previous research program also financed by the EU. Our goal is the experimental characterization of the potential energy surface (PES) governing the interaction between simple molecules and surfaces.
Two different approaches are being pursued. In one set of experiments we want to investigate the diffraction of D2 molecules from surfaces presenting barriers of different heights to dissociative chemisorption. Very recent theories by Hollloway (1992) predict the onset of dramatic changes in the diffraction intensities when the incident energies are comparable with the dissociation barrier.
In a second set of experiments the hydrogen exchange reaction H2 + D2 = 2IID is being studied with of high resolution time-of-flight technique on highly reactive surfaces like Ni(110). The residence time of the reactants on the surface and other dynamical parameters can be directly measured by means of a newly conceived molecular beam techniz ue. We plan the study of this exchange reaction on the Ni(100) and the stepped Ni(115 surfaces as a function of the incident energy, incident angle and the surface azimut . Other surfaces with structural defects and clusters will be investigated. We are going to extend the range of incident beam energies up to 360 meV em- ploying recently developed high temperature nozzle source. The combined use of high crystal temperatures and highly energetic monochromatic molecular beams should allow the observation of the transition between slow, trapping-mediated (Langmuir-IIinshel- wood) and fastj direct (Eley-Rideal) chemical reaction mechanisms as recently proposed by Weinberg (1990)
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences chemical sciences
- agricultural sciences agriculture, forestry, and fisheries forestry
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
37073 Göttingen
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.