Mercury Photosensitized Decomposition of Carbon Dioxide by 1849 Å (Hg*61P1)

概要

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The photosensitized decomposition of carbon dioxide by Hg*(61P1) and the direct photolysis by 1849 Å was investigated by the static method. The product in photosensitization was carbon monoxide and no oxygen was detected. The deficiency of oxygen in the product may be due to the formation of an oxide of mercury which was deposited on the front window of the reaction cell. In photolysis of carbon dioxide, carbon monoxide and oxygen were produced in the ratio around 5:1. The deficiency of oxygen may be due to the wall effect and partly due to the formation of ozone. The apparent quenching cross section was obtained by assuming a simple mechanism. The large value of the apparent quanching cross section of Hg*(61P1) is discussed from the point of view of intermolecular interaction between the excited mercury atom and carbon dioxide in the ground state.
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