PHOTOLYSIS OF ETHYNE IN SOLID NEON AND SYNTHESIS OF LONG-CHAIN CARBON CLUSTERS WITH VACUUM-ULTRAVIOLET LIGHT

Journal Article · Mon Sep 20 00:00:00 EDT 2010 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/721/1/856· OSTI ID:21464823

Wu, Yu-Jong; Lin, Meng-Yeh; Chou, Sheng-Lung; Chen, Hui-Fen; Lu, Hsiao-Chi; Chen, Hong-Kai; Cheng, Bing-Ming ^[1]

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1. National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan (China)

The absorption spectrum of ethyne, C{sub 2}H{sub 2}, 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{sub n} (n = 3-12), C{sub 2}H, C{sub 2}H{sub 3}, C{sub 4}H, C{sub 4}H{sub 2}, C{sub 8}H{sup -}, and C{sub 8}H{sub 2}. The efficiency of photolysis of ethyne and the nature of photoproducts depend on the selected wavelength of VUV light. Information about the photodissociation of C{sub 2}H{sub 2} 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.

• OSTI ID: 21464823
• Journal Information: Astrophysical Journal, Vol. 721, Issue 1; Other Information: DOI: 10.1088/0004-637X/721/1/856; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ABSORPTION SPECTRA
ACETYLENE
AEROSOLS
ASTROPHYSICS
CARBON
COSMOLOGY
FAR ULTRAVIOLET RADIATION
NEON
PHOTOLYSIS
VINYL RADICALS
ALKYL RADICALS
ALKYNES
CHEMICAL REACTIONS
COLLOIDS
DECOMPOSITION
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
FLUIDS
GASES
HYDROCARBONS
NONMETALS
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHYSICS
RADIATIONS
RADICALS
RARE GASES
SOLS
SPECTRA
ULTRAVIOLET RADIATION