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- W2068034334 abstract "When the clean surface of a ZnO single crystal, mounted in an UHV flow system, is heated to temperatures of 400 or 450°C and, in the presence of 10–8 Torr O2 and CO, is illuminated periodically by ultra-violet light from a high pressure mercury arc, rapid changes of the partial pressures due to photo catalytic reaction to CO2 or photo desorption of oxygen are monitored by a quadrupole mass spectrometer. In the presence of O2 at pressures of 10–8 Torr or below, atomic oxygen is produced in a quantum process and, in the absence of a partner apt to reaction, emitted into the vacuum. The photo generation of O is accompanied by thermo-desorption of O2. In the presence of CO at pressures of 10–8 Torr or below, no atomic oxygen may be detected, instead, CO2 is produced by photo reaction. Atomic O is generated by photo dissociation of a ZnO bond, 4 eV being the upper limit of the energy necessary for this process." @default.
- W2068034334 created "2016-06-24" @default.
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- W2068034334 date "1974-01-01" @default.
- W2068034334 modified "2023-09-26" @default.
- W2068034334 title "B. Photo-adsorption, photo-desorption and photo-reactions at surfaces. Oxidation of CO and desorption of oxygen by ultra-violet irradiation of ZnO single crystals under ultra-high vacuum conditions" @default.
- W2068034334 doi "https://doi.org/10.1039/dc9745800143" @default.
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