Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apj...710..112s&link_type=abstract
The Astrophysical Journal, Volume 710, Issue 1, pp. 112-116 (2010).
Astronomy and Astrophysics
Astronomy
1
Astrochemistry, Ism: Clouds, Planets And Satellites: General, Planets And Satellites: Individual: Saturn Titan
Scientific paper
Photodissociation of CH3NH2 + has been studied using the DC sliced ion imaging technique and ab initio calculations in order to understand the formation of HCNH+, an important molecule in Titan's ionosphere. Our experimental and theoretical observations show that hydrogen loss from CH3NH2 + has two channels: one giving rise to the triplet species CH3NH+, while the other product is CH2NH2 +. The latter then decomposes further to form HCNH+. H2 loss from CH3NH2 + has only one channel, yielding CH2NH+. This species further loses H to form HCNH+. The branching ratio of the H, H2, and H+H2 loss channels is found to be 4.2:1:2.5. This is ascribed to the fact that, at these energies, the H loss has one stable triplet product channel, while most of the H2 loss product further decomposes to HCNH+.
Schlegel Bernhard H.
Shen Lei
Singh Prashant Chandra
Suits Arthur G.
Zhou Jiajia
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