Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apj...721..856w&link_type=abstract
The Astrophysical Journal, Volume 721, Issue 1, pp. 856-863 (2010).
Astronomy and Astrophysics
Astronomy
3
Astrochemistry, Infrared: Ism, Ism: Clouds, Planets And Satellites: General, Planets And Satellites: Individual: Saturn Titan
Scientific paper
The absorption spectrum of ethyne, C2H2, in solid Ar was measured in the wavelength region 107-220 nm with light from a synchrotron. Based on that absorption, irradiation of samples of ethyne dispersed in neon with vacuum-ultraviolet (VUV) radiation yielded various products that were identified through their infrared absorption spectra including C n (n = 3-12), C2H, C2H3, C4H, C4H2, C8H-, and C8H2. The efficiency of photolysis of ethyne and the nature of photoproducts depend on the selected wavelength of VUV light. Information about the photodissociation of C2H2 with various photon energies and the formation and identification of large carbon clusters and hydrides at low temperature might be useful in photochemical models to simulate the composition of the atmosphere of Titan and as a source of aerosols.
Chen Hong-Kai
Chen Hui-Fen
Cheng Bing-Ming
Chou Sheng-Lung
Lin Meng-Yeh
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