Source of Nitrogen Isotope anomaly in HCN in the Atmosphere of Titan
The 14N/ 15N ratio for N 2 in the atmosphere of Titan was recently measured to be a factor of 2 higher than the corresponding ratio for HCN. Using a one-dimensional photochemical model with transport, we incorporate new isotopic photoabsorption and photodissociation cross sections of N 2, computed quantum-mechanically, and show that the difference in the ratio of 14N/ 15N between N 2 and HCN can be explained primarily by the photolytic fractionation of 14N 14N and 14N 15N. The [HC 14N]/[HC 15N]...[Show more]
|Collections||ANU Research Publications|
|Source:||Astrophysical Journal, The|
|01_Liang_Source_of_Nitrogen_Isotope_2007.pdf||174.59 kB||Adobe PDF|
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