Electron stimulated desorption of alkali metal ions and atoms: Local surface field relaxation
| Autor: | Yu. A. Kuznetsov, B. V. Yakshinskii, Theodore E. Madey, V. N. Ageev |
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| Rok vydání: | 1995 |
| Předmět: |
Condensed Matter::Quantum Gases
Nuclear and High Energy Physics Chemistry Analytical chemistry chemistry.chemical_element Thermal ionization Electron Tungsten Alkali metal Ion Condensed Matter::Materials Science Adsorption Ionization Desorption Physics::Atomic and Molecular Clusters Physics::Atomic Physics Instrumentation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 101:69-72 |
| ISSN: | 0168-583X |
| DOI: | 10.1016/0168-583x(95)00286-3 |
| Popis: | Electron stimulated desorption (ESD) of neutral alkali metal atoms and positive ions has been studied from alkali metal layers adsorbed on oxidized and silicided tungsten by means of a static magnetic mass spectrometer combined with a retarding field analizer. The desorbed alkali metal atoms were ionized in a surface ionization detector and their energy distributions were measured using a time-of-flight method. The ESD cross sections and energy distributions for alkali metal atoms and ions have been measured as a function of the incident electron energy and the deposited alkali metal concentration. To interpret the results we have extended the Auger stimulated desorption model taking into account the surface Coulomb field relaxation and the ESD of neutrals. |
| Databáze: | OpenAIRE |
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