Angle-resolved electron stimulated desorption of metastable atoms from solid argon
We have investigated the electron stimulated desorption of neutral metastable atoms from solid Argon condensed on a Pt (111) surface at 14 K. With time of flight techniques, we have observed the emission of photons and the ejection of two groups of metastable atoms, of very low kinetic energy (< 300 meV) and narrow angular distribution (15° width at half -maximum) along the surface normal. The photon signal is interpreted as resulting from the radiative de-excitation of the low-lying excimer states within the film and at the surface. Metastables originate mainly in the conversion of n=1 bulk free excitons to dissociative metastable states at the surface.
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| Main Authors: | , , , |
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| Format: | article biblioteca |
| Language: | eng |
| Subjects: | U30 - Méthodes de recherche, désorption, adsorbant, propriété physicochimique, film, http://aims.fao.org/aos/agrovoc/c_15963, http://aims.fao.org/aos/agrovoc/c_25300, http://aims.fao.org/aos/agrovoc/c_1521, http://aims.fao.org/aos/agrovoc/c_2899, |
| Online Access: | http://agritrop.cirad.fr/561360/ http://agritrop.cirad.fr/561360/1/document_561360.pdf |
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