Cross-section for the reaction O- + O2 → O2- at relative kinetic energies from threshold to 3 eV

S. L. Lin; J. N. Bardsley; I. Dotan; F. C. Fehsenfeld; D. L. Albritton

doi:10.1016/0020-7381(80)85019-4

Cross-section for the reaction O^- + O₂ → O₂^- at relative kinetic energies from threshold to 3 eV

S. L. Lin, J. N. Bardsley, I. Dotan, F. C. Fehsenfeld, D. L. Albritton

Research output: Contribution to journal › Article › peer-review

Abstract

The cross-section for the charge-transfer reaction of O^- with O₂ is determined in the relative kinetic energy range from 1 eV (threshold) to about 3 eV, using a combination of experimental and theoretical ion-swarm techniques. Reaction rate constants are measured in a helium-buffered flow-drift tube in the range 50 ≤ E/N ≤ 110 Td, where E is the DC electric field strength, N is the helium gas number density and 1 Townsend (Td) 10^-17 V cm². Velocity distributions are computed using Monte Carlo techniques for O^- ions drifting in helium at E/N values in this range. These distributions and the drift-tube rate constants define the reaction cross-section at low collision energies, a region in which it has been difficult to make reliable ion-beam measurements.

Original language	English
Pages (from-to)	113-124
Number of pages	12
Journal	International Journal of Mass Spectrometry and Ion Physics
Volume	34
Issue number	1-2
DOIs	https://doi.org/10.1016/0020-7381(80)85019-4
State	Published - Jun 1980
Externally published	Yes

Bibliographical note

Funding Information:
This research was supported in part by the Advanced Research Projects Agency under Contract NOOO-14-76-CO098 and the Defense Nuclear Agency.

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10.1016/0020-7381(80)85019-4

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title = "Cross-section for the reaction O- + O2 → O2- at relative kinetic energies from threshold to 3 eV",

abstract = "The cross-section for the charge-transfer reaction of O- with O2 is determined in the relative kinetic energy range from 1 eV (threshold) to about 3 eV, using a combination of experimental and theoretical ion-swarm techniques. Reaction rate constants are measured in a helium-buffered flow-drift tube in the range 50 ≤ E/N ≤ 110 Td, where E is the DC electric field strength, N is the helium gas number density and 1 Townsend (Td) 10-17 V cm2. Velocity distributions are computed using Monte Carlo techniques for O- ions drifting in helium at E/N values in this range. These distributions and the drift-tube rate constants define the reaction cross-section at low collision energies, a region in which it has been difficult to make reliable ion-beam measurements.",

author = "Lin, {S. L.} and Bardsley, {J. N.} and I. Dotan and Fehsenfeld, {F. C.} and Albritton, {D. L.}",

note = "Funding Information: This research was supported in part by the Advanced Research Projects Agency under Contract NOOO-14-76-CO098 and the Defense Nuclear Agency.",

year = "1980",

month = jun,

doi = "10.1016/0020-7381(80)85019-4",

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AU - Lin, S. L.

AU - Bardsley, J. N.

AU - Dotan, I.

AU - Fehsenfeld, F. C.

AU - Albritton, D. L.

N1 - Funding Information: This research was supported in part by the Advanced Research Projects Agency under Contract NOOO-14-76-CO098 and the Defense Nuclear Agency.

PY - 1980/6

Y1 - 1980/6

N2 - The cross-section for the charge-transfer reaction of O- with O2 is determined in the relative kinetic energy range from 1 eV (threshold) to about 3 eV, using a combination of experimental and theoretical ion-swarm techniques. Reaction rate constants are measured in a helium-buffered flow-drift tube in the range 50 ≤ E/N ≤ 110 Td, where E is the DC electric field strength, N is the helium gas number density and 1 Townsend (Td) 10-17 V cm2. Velocity distributions are computed using Monte Carlo techniques for O- ions drifting in helium at E/N values in this range. These distributions and the drift-tube rate constants define the reaction cross-section at low collision energies, a region in which it has been difficult to make reliable ion-beam measurements.

AB - The cross-section for the charge-transfer reaction of O- with O2 is determined in the relative kinetic energy range from 1 eV (threshold) to about 3 eV, using a combination of experimental and theoretical ion-swarm techniques. Reaction rate constants are measured in a helium-buffered flow-drift tube in the range 50 ≤ E/N ≤ 110 Td, where E is the DC electric field strength, N is the helium gas number density and 1 Townsend (Td) 10-17 V cm2. Velocity distributions are computed using Monte Carlo techniques for O- ions drifting in helium at E/N values in this range. These distributions and the drift-tube rate constants define the reaction cross-section at low collision energies, a region in which it has been difficult to make reliable ion-beam measurements.

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Cross-section for the reaction O^- + O₂ → O₂^- at relative kinetic energies from threshold to 3 eV

Abstract

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