David Osborne - Trends in Ion-Electron Dissociative Recombination of Benzene Analogs

Version 1

      Publication Details (including relevant citation   information):

      Poster Presentation at SESAPS 2011

      David Osborne, Jr. and Nigel Adams

      Abstract:

      The Kepler Spacecraft successfully identified five new planets   within the Habitable zones of stars in our region of the Milky   Way. In our own planetary system the Cassini Spacecraft obtained   mass spectra of the atmosphere of Saturn's moon Titan. To convert   the mass spectra to molecular composition a great deal of kinetic   rate data is required. These data are used to explain the   processes by which small molecules form larger compounds within   the Titan atmosphere. The models have indicated that larger   ringed hydrocarbon species are present, like benzene. This makes   the Titan atmosphere similar to the atmosphere of Early Earth and   of interest to NASA. To help in the modeling, we have studied the   kinetics of ion-electron recombination of various single ringed   hydrocarbon analogs, like benzene. These data were obtained using   a Variable Temperature Flowing Afterglow fitted with a Langmuir   Probe to determine kinetic rates for ion-electron recombination.   This technique was used for benzene analogs with varying degrees   of nitrogen and methyl substitutions. From the data, it has been   possible to determine trends which will reduce the amount of data   needed in the modeling of the Titan atmosphere.

      Address (URL): http://bearcat.phys.vt.edu/indico/contributionDisplay.py?contribId=213&sessionId =67&confId=1