Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000dps....32.1108l&link_type=abstract
American Astronomical Society, DPS Meeting #32, #11.08; Bulletin of the American Astronomical Society, Vol. 32, p.1011
Astronomy and Astrophysics
Astronomy
Scientific paper
The deuterated compounds in the upper atmospheres of giant planets have not been observed or modeled, except for HD and CH3D. We report a new photochemical model for the deuterated hydrocarbons up to C2 in the upper atmosphere of Jupiter. We include in the model laboratory measurements of the ultraviolet cross sections of CH3D and C2H5D. The fast reactions for exchanging H and D atoms between H2 and CH4 have been incorporated in the model: H + HD <--> D + H2, CH3 + D <--> CH2D + H. Since there is no reliable kinetics measurement for the reaction, CH2D + H --> CH3 + D, we use Yung et al.'s (1988) estimate for the rate constant. The strong temperature dependence for this reaction leads to large isotopic fractionation for CH3D and C2H5D, whose production rate depends largely on the deuterated methyl radical abundance. The model predicts that the D/H in deuterated ethane is about 15 times that of the D/H of the bulk atmosphere. The successful confirmation of this result would provide a sensitive test of the photochemistry of hydrocarbons in the atmosphere of Jupiter.
Bahou Mohammed
Cheng Bing-Ming
Chew Eh Piew
Lee Anthony Y. -T.
Lee Paul Y.
No associations
LandOfFree
Enhancement of Deuterated Ethane on Jupiter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Enhancement of Deuterated Ethane on Jupiter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhancement of Deuterated Ethane on Jupiter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-865784