Licentiate Thesis: Ion-neutral reactions of C2H2N+ with hydrocarbons
by
Pantea Fathi(Stockholm University, Department of Physics)
→
Europe/Stockholm
132:028
132:028
Description
To provide some insights on the formation of long-chain carbon-nitrogen bearing
ions in Titan’s atmosphere, laboratory measurements of ion-neutral reactions
were conducted and results are presented in the following licentiate thesis. The
product ions of the C2H2N+ reaction with saturated and unsaturated neutral
hydrocarbons have been studied using guided ion beam mass spectrometer (GIBMS).
The data have been used to infer the product ion signal intensity
dependences on pressure and collision energies to obtain information on the
reactions contributing to these signals. Theoretical calculations have been carried
out to interpret these measurements and to elucidate the reaction pathways
leading to the observed product ions. This study provides understanding on the
formation of long-chain carbon-nitrogen bearing ions through exothermic and
barrierless ion-neutral reactions which are of interest as possible formation routes
to heavy positive ions detected in Titan’s atmosphere by Cassini’s ion neutral
mass spectrometer (INMS).
