Titan's atmospheric haze: the case for HCN incorporation

Details Titan's atmospheric haze: the case for HCN incorporation Titan's atmospheric haze: the case for HCN incorporation

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...341..312l&link_type=abstract

Astronomy and Astrophysics, v.341, p.312-317 (1999)

Astronomy and Astrophysics

Astrophysics

22

Molecular Processes, Planets And Satellites: Individual: Titan

Scientific paper

It is suggested that the incorporation of HCN in Titan's atmospheric haze may be an important process affecting the HCN profile and the C/N ratio in Titan's haze. By introducing a loss to the haze term for HCN (i.e. a production term of ``poly-HCN") in the photochemical model of Lara et al. (1996), we have improved the model's ability to simultaneously reproduce the observed HCN and C_2 hydrocarbon profiles in Titan's lower stratosphere. The loss rate of HCN by this process may be a few times 10(8) cm(-2) s(-1) . The calculated C/N ratio in the haze, assuming that the haze is primarily produced from C_6H_2, C_8H_2 and ``poly-HCN", is approximately equal to 2, in agreement with the composition of laboratory tholin analogues.

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