Asymptotic energy distributions in rotational and vibrational predesorption
| Autor: | M. Torri, G.P. Brivio, Zbigniew W. Gortel, M.L. Rossi |
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| Rok vydání: | 1996 |
| Předmět: |
Surface (mathematics)
Chemistry Canonical coordinates Chaotic Degrees of freedom (physics and chemistry) Surfaces and Interfaces Substrate (electronics) Condensed Matter Physics Molecular physics Surfaces Coatings and Films Phase space Desorption Materials Chemistry Molecule Physical chemistry Physics::Chemical Physics |
| Zdroj: | Surface Science. 368:61-66 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/s0039-6028(96)01029-1 |
| Popis: | The predesorption processes of CO and CH3F molecules from the NaCl(100) surface at very low coverage and substrate temperature are described by classical models with two non-linearly coupled degrees of freedom. The analysis of the phase space structure of these systems from the Poincare sections spanned by the canonical coordinates of the molecule-surface bond allows one to calculate the desorption rates and the asymptotic energy distributions of the desorbed molecules. It is shown that these quantities clearly reflect the presence of dynamical barriers in the phase space induced by the chaotic behaviour of the desorbing trajectories. |
| Databáze: | OpenAIRE |
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