The IONO2 absorption cross-sections
نویسندگان
چکیده
The UV-visible absorption spectrum of gaseous IONO 2 has been measured over the wavelength range 245–415 nm using the technique of laser photolysis with time-resolved UV-visible absorption spectroscopy. IONO 2 was produced in situ in the gas phase by laser flash photolysis of NO 2 /CF 3 I/N 2 mixtures. Post-flash spectra were deconvolved 5 to remove contributions to the observed absorption from other reactant and product species. The resulting spectrum attributed to IONO 2 consists of several overlapping broad absorption bands. Assuming a quantum yield of unity for IONO 2 photolysis, model calculations show that during sunlit hours at noon, 53 • N, the first order solar photolysis rate coefficient (J value) for IONO 2 is 4.6 × 10 −2 s −1 .
منابع مشابه
The UV-visible absorption cross-sections of IONO2
The UV-visible absorption spectrum of gaseous IONO2 has been measured over the wavelength range 245– 415 nm using the technique of laser photolysis with timeresolved UV-visible absorption spectroscopy. IONO2 was produced in situ in the gas phase by laser flash photolysis of NO2/CF3I/N2 mixtures. Post flash spectra were deconvolved to remove contributions to the observed absorption from other re...
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