Laser flash photolysis of benzene. IV. Physicochemical properties of mist produced by laser excitation.
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概要
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Mist formation is observed when gaseous benzene (8–75 Torr) (1 Torr=133.322 Pa) with oxygen (\lesssim10<SUP>−5</SUP>–860 Torr) is irradiated by a KrF excimer laser. By measuring the falling speed, the size of droplets in the mist is determined to be 2 to 6 μm depending on gas pressure. The number of droplets produced by irradiation with a 100 mJ/cm<SUP>2</SUP> pulse is estimated to be 1×10<SUP>5</SUP>/cm<SUP>3</SUP> by measuring the benzene pressure change and by turbidity measurement. The disappearance yield of benzene is 0.1 and phenol is identified with a quantum yield of 0.01. The nucleus is produced by two-photon excitation of benzene and allowed to grow into mist through a subsequent oxidation and/or polymerization reaction.
- 公益社団法人 日本化学会の論文
著者
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NAKASHIMA Nobuaki
Institute of Environmental Toxicology
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YOSHIHARA Keitaro
Institute for Molecular Science
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