Spontaneous emission of photons and electrons during chemisorption of chlorine on sodium |
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Authors: | B. Kasemo L. Wadldén |
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Affiliation: | Physics Dept., Chalmers University of Technology, Fack, S-402 20 Gothenburg 5, Sweden |
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Abstract: | Photons and electrons are emitted when Cl2 molecules react on a Na surface prepared by UHV evaporation. The emission yield per reacting molecule is 10?7-10?6 for photons and approximately 10?5 for electrons. The dominating light emission band has a maximum at hv = 2.15 eV (width 0.6 eV). A less intense u.v. band has a maximum at about 4.7 eV. A drastic decrease in the photon and electron emission at a Cl2 exposure of about 5.10?3 torr·sec, is attributed to the formation of a continuous NaCl film on the Na surface. |
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