1975
DOI: 10.1063/1.430429
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Electron–ion recombination rate constants for some compounds of moderate complexity

Abstract: Electron–ion recombination has been studied for the systems N2, CH4, C3H8, neopentane, NH3, and CO2 by use of a microwave conductivity method coupled with pulse radiolysis. Rate constants were determined by analysis of the directly observed electron disappearance. All data pertain to 297 °K. Corrections were made for competing electron losses by extrapolation to zero of a plot of apparent second-order rate constant versus reciprocal of initial electron concentration. No attempt was made to try to identify the … Show more

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Cited by 37 publications
(4 citation statements)
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“…The parent gas serves to identify the recombining plasma. For CH4 a plasma recombination rate of 3.9 x 10 -6 cm 3 s -I has been measured by Maier and Fessenden [1975] at room temperature, somewhat larger than the Rebbert et al [1973] value of 1.9 x 10 -6. The dominant recombining ions are probably CH5 + and C2H5 +.…”
Section: Ionization Sourcesmentioning
confidence: 72%
See 1 more Smart Citation
“…The parent gas serves to identify the recombining plasma. For CH4 a plasma recombination rate of 3.9 x 10 -6 cm 3 s -I has been measured by Maier and Fessenden [1975] at room temperature, somewhat larger than the Rebbert et al [1973] value of 1.9 x 10 -6. The dominant recombining ions are probably CH5 + and C2H5 +.…”
Section: Ionization Sourcesmentioning
confidence: 72%
“…The dominant recombining ions are probably CH5 + and C2H5 +. As the complexity of the heavy hydrocarbon ions increases, the recombination rate increases initially (e.g., 5.8 x 10 -6 cm 3 s -I for C3H8), but eventually it decreases with greater complexity (e.g., 4.2 x 10 -6 cm 3 s -I for neopentane [Maier and Fessenden, 1975]). Although it is not obviously applicable to our discussion, it is interesting to note that recombination for an NH3 plasma is pressure dependent with a rate varying from 4.6 x 10 -6 at 1 torr to 11.2 x 10 -6 cm 3 s -I at 10 torrs [Maier and Fessenden, 1975].…”
Section: Ionization Sourcesmentioning
confidence: 99%
“…18,19 Due to the relatively high pressures, N 4 + was assumed to be the most dominant ion and its recombination with electrons dominated the electron loss. 18,19 Due to the relatively high pressures, N 4 + was assumed to be the most dominant ion and its recombination with electrons dominated the electron loss.…”
Section: Discussionmentioning
confidence: 99%
“…10 The linear C ϱv structure was verified experimentally in 1982. 18 In 1972 Sauer and Mulac obtained a rate constant of ͑3.0± 0.6͒ ϫ 10 −6 cm 3 s −1 for pressures of 280-980 Torr. 12 The situation became increasingly ambiguous when a subsequent theoretical calculation again predicted the C ϱv geometry of the X 3 ⌺ − state with r 12 = 1.43 Å and r 12 = 1.2 Å.…”
Section: Introductionmentioning
confidence: 99%