Excitation wavelength dependence and magnetic field effect on aerosol particle formation from a gaseous mixture of carbon disulphide and glyoxal |
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| Authors: | Hiroshi Morita Shuhei Kanaya Zdeněk Bastl |
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| Institution: | 1. Graduate School of Science and Technology , Chiba University , Yayoi-cho 1-33, Inage-ku, Chiba, Chiba 263-8522, Japan;2. Department of Information and Image Sciences, Faculty of Engineering , Chiba University , Yayoi-cho 1-33, Inage-ku, Chiba, Chiba 263-8522, Japan hmorita@faculty.chiba-u.jp;4. Graduate School of Science and Technology , Chiba University , Yayoi-cho 1-33, Inage-ku, Chiba, Chiba 263-8522, Japan;5. J. Heyrovsky Institute of Physical Chemistry , Academy of Sciences of the Czech Republic , 182 23 Prague, Czech Republic |
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| Abstract: | Upon excitation of carbon disulphide (CS2) molecules under UV light irradiation at 313?nm a gaseous mixture of CS2 and glyoxal deposited sedimentary aerosol particles only. The nucleation process of the aerosol particles was investigated by measuring the He–Ne laser light intensity scattered by the aerosol particles formed under light irradiation at 313?nm, and the chemical structure of the sedimentary particles was analysed by measuring the FT-IR and X-ray photoelectron spectra. On application of a magnetic field of up to 5?T, the nucleation process was decelerated and the chemical species originating from CS2 were less abundant. The results were compared with those obtained under visible light irradiation at 435.8?nm reported previously. Chemical reactions between CS2 and glyoxal molecules, which were responsive to the magnetic field, are discussed briefly. |
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| Keywords: | Aerosol particles Gas-phase photochemical reaction Magnetic field effect Carbon disulphide Glyoxal |
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