Measurement of the Rate Coefficients for the Bimolecular and Termolecular Charge Transfer Reactions of He₂⁺ with Ne, Ar, N₂, CO, CO₂, and CH₄ Page: 3
viii, 111 leaves : ill.View a full description of this dissertation.
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of reactant from 25 to 400 u Hg. From these data, pressure
dependent rate coefficients have been extracted and sub-
sequently resolved into contributions from bimolecular and
termolecular components for reactions of He2 with Ne, Ar,
N2, CO, C02, and CH^. The bimolecular components have been
found to agree with the results shown in literatures to
within experimental error, and in some cases the values
reported here represent an improvement in precision.
Of particular interest was the discovery that the pres-
ence of a third body can change an improbable charge transfer
+ 1-
reaction involving He2 into a very probable one, as in the
case of the reaction with argon. For example, in Tables
II and II it was shown that less than a 300 torr pressure
of helium was required to double the effective rate of reac-
tion of argon with He^ while over 3000 torr was required
for CH4.
The sensitivity of the method has been sufficient to
OA C
detect termolecular components as small as 2 x 10" cm /sec
-30
and values were found to range widely from 2 x 10 for
Ne to 67 x lO"30 cm^/sec for CO2. The size of these ter-
molecular rates not only served to explain specific anomalous
efficiencies of the charge transfer process observed in atmos-
pheric pressure lasers but also suggested the general impor-
tance of three-body ion-molecule reactions in higher pressure
plasmas.
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Lee, Francis Wha-Pyo. Measurement of the Rate Coefficients for the Bimolecular and Termolecular Charge Transfer Reactions of He₂⁺ with Ne, Ar, N₂, CO, CO₂, and CH₄, dissertation, May 1977; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc331306/m1/3/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .