NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Measured ion-molecule reaction rates for modelling Titan's atmosphereRate coefficients for several two- and three-body ion-molecule reactions involving hydrocarbons have been determined at thermal energies and above using drift tube-mass spectrometer techniques. The measured rates for clustering and breakup reactions involving CH5(+) and C2H5(+) ions in methane are found to be strongly temperature dependent in the range from 80 to 240 K. The equilibrium constants determined for these reactions differ somewhat from those of Hiraoka and Kebarle (1975). Rate coefficients for two-body reactions of CH5(+), C2H5(+), N(+), H(+), and D(+) ions with methane and/or ethane have been measured. The results indicate that the product yields of several of the fast ion-molecule reactions depend strongly on ion energy (temperature), and therefore previous room-temperature results may be of limited value for model calculations of Titan's atmosphere.
Document ID
19850032947
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Dheandhanoo, S.
(Pittsburgh Univ. Pittsburgh, PA, United States)
Johnsen, R.
(Pittsburgh Univ. Pittsburgh, PA, United States)
Biondi, M. A.
(Pittsburgh, University Pittsburgh, PA, United States)
Date Acquired
August 12, 2013
Publication Date
October 1, 1984
Publication Information
Publication: Planetary and Space Science
Volume: 32
ISSN: 0032-0633
Subject Category
Lunar And Planetary Exploration
Accession Number
85A15098
Funding Number(s)
CONTRACT_GRANT: NGL-39-011-137
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available