کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1782316 | 1523974 | 2007 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Uncertainty analysis of bimolecular reactions in Titan ionosphere chemistry model
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We report about the first detailed uncertainty analysis concerning the kinetics parameters of the ion-molecule reactions included in a Titan's ionospheric chemistry model. Uncertainty propagation has been performed by Monte Carlo sampling. Different possible descriptions of the uncertainties on the rate constants are discussed and compared on the basis of our state of knowledge about ion-molecule reaction rates laboratory measurements. We propose also a new method for the treatment of branching ratios correlated uncertainties. We show that the uncertainty on branching ratios contribute significantly to the uncertainty on ion densities predicted by the chemistry model. Simulation of a mass spectrum for ionic species in Titan ionosphere at 1200Â km of altitude and night-time chemistry has been performed and compared to the INMS mass-spectrum available on the website of the NASA ãhttp://photojournal.jpl.nasa.gov/catalog/PIA07865ã], corresponding to Cassini's T5 flyby.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Planetary and Space Science - Volume 55, Issues 1â2, January 2007, Pages 141-157
Journal: Planetary and Space Science - Volume 55, Issues 1â2, January 2007, Pages 141-157
نویسندگان
N. Carrasco, O. Dutuit, R. Thissen, M. Banaszkiewicz, P. Pernot,