Condensed species in Titan's stratosphere: Confirmation of crystalline cyanoacetylene (HC3N) and evidence for crystalline acetylene (C2H2) on Titan |
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| Authors: | RK Khanna |
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| Institution: | Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA |
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| Abstract: | Infrared spectra of crystalline HC3N and C2H2 were investigated at several temperatures between 15 and 150 K. The characteristics of the 505 and 753 cm−1 bands of HC3N are in complete agreement with the emission spectral data on Titan obtained by the Voyager IRIS instrument, thus confirming the identification of crystalline HC3N on Titan. A composite spectrum in the 720-800 cm−1 region, with contributions from HC3N and C2H2 in crystalline phases, reproduces the Voyager emission data in that region, thus providing a suggestion for the identification of crystalline C2H2 on Titan. |
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| Keywords: | Titan Infrared Acetylene Cyanoacetylene Atmosphere composition |
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