NDLI: A Pilot Study of Ion - Molecule Reactions at Temperatures Relevant to the Atmosphere of Titan

Content Provider	Springer Nature Link
Author	Zymak, Illia Žabka, Ján Polášek, Miroslav Španěl, Patrik Smith, David
Copyright Year	2016
Abstract	Reliable theoretical models of the chemical kinetics of the ionosphere of Saturn’s moon, Titan, is highly dependent on the precision of the rates of the reactions of ambient ions with hydrocarbon molecules at relevant temperatures. A Variable Temperature Selected Ions Flow Tube technique, which has been developed primarily to study these reactions at temperatures within the range of 200–330 K, is briefly described. The flow tube temperature regulation system and the thermalisation of ions are also discussed. Preliminary studies of two reactions have been carried out to check the reliability and efficacy of kinetics measurements: (i) Rate constants of the reaction of CH$_{3}$ $^{+}$ ions with molecular oxygen were measured at different temperatures, which indicate values in agreement with previous ion cyclotron resonance measurements ostensibly made at 300 K. (ii) Formation of CH$_{3}$ $^{+}$ ions in the reaction of N$_{2}$ $^{+}$ ions with CH$_{4}$ molecules were studied at temperatures within the range 240–310 K which showed a small but statistically significant decrease of the ratio of product CH$_{3}$ $^{+}$ ions to reactant N$_{2}$ $^{+}$ ions with reaction temperature.
Starting Page	533
Ending Page	538
Page Count	6
File Format	PDF
ISSN	01696149
Journal	Origins of Life and Evolution of Biospheres
Volume Number	46
Issue Number	4
e-ISSN	15730875
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-04-23
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Titan ionosphere Variable Temperature Selected Ions Flow Tube VT-SIFT CH$_{3}$ $^{+}$ ions Ion-molecule reactions Life Sciences Astrophysics and Astroparticles Earth Sciences Astronomy, Observations and Techniques Biochemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Ecology, Evolution, Behavior and Systematics Space and Planetary Science

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