Trapping of the Noble Gases Ar, Kr and Xe in aerosols formed by C2H2 + HCN photolysis - implications to Titan

Details Trapping of the Noble Gases Ar, Kr and Xe in aerosols formed by C2H2 + HCN photolysis - implications to Titan Trapping of the Noble Gases Ar, Kr and Xe in aerosols formed by C2H2 + HCN photolysis - implications to Titan

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005dps....37.4513j&link_type=abstract

American Astronomical Society, DPS meeting #37, #45.13; Bulletin of the American Astronomical Society, Vol. 37, p.719

Other

2

Scientific paper

Titan's atmosphere was found by the Cassini (INMS) flyby at 1200km above Titan's surface to be devoid of Kr and Xe, with only traces of 40Ar and no other Ar isotopes. During our studies of the polymerization of C2H2:HCN:N2 = 10:1:70 mixtures by UV photolysis and the subsequent formation of aerosols, as observed on Titan, we found that the aerosols trap the noble gases. From the rate of formation and sedimentation of the aerosols, together with their trapping efficiencies for Ar, Kr and Xe, it can be shown that Kr, Xe and 36Ar, 38Ar were entirely deposited on Titan's surface, with traces of 40Ar being constantly evolving from a radiogenic source. Following the non-detection of lightning discharges and thunderclaps in Titan's atmosphere by the Huygens HASI experiment, it seems that solar UV irradiation is the major energy source driving Titan's atmospheric chemistry. UV irradiation of a C2H2:HCN = 10:1 mixture results in an aerosol composition of C:H:N = 1:1:0.07. The nitrogen content is much smaller than that found in experiments using electrical discharges. A C:H ratio of 1 in the aerosols might hint on their composition, namely, polyvinyls and some aromatics.

Affiliated with

Also associated with

No associations

Rating

Trapping of the Noble Gases Ar, Kr and Xe in aerosols formed by C2H2 + HCN photolysis - implications to Titan 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 Trapping of the Noble Gases Ar, Kr and Xe in aerosols formed by C2H2 + HCN photolysis - implications to Titan, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trapping of the Noble Gases Ar, Kr and Xe in aerosols formed by C2H2 + HCN photolysis - implications to Titan will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-952180