ChemInform Abstract: Three‐Body Ion—Molecule Processes

Karachevtsev, G. V.; Vinogradov, P. S.

doi:10.1002/chin.200003295

Cited by 2 publications

(2 citation statements)

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“…where σ L is the Langevin polarization-interaction cross section and P ij,km is the probability that the intermediate complex formed in a collision between − O 2 (i) and O 2 (k) decomposes into − O 2 (j) and O 2 (m). The probability P ij,km was [30,31] (see also [16]) (11) where the value of n is in the range 1.5-2.5 (depending on the assumption about the role of rotational degrees of freedom for O 2 molecules in the formation of the…”

Section: Collisional Processes and Cross Sectionsmentioning

confidence: 99%

Monte Carlo simulation of electron detachment properties for ${{\text{O}_{2}^{{}}}^{-}}$ ions in oxygen and oxygen:nitrogen mixtures

Пономарев

Aleksandrov

2015

Plasma Sources Sci. Technol.

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Electron detachment properties of −O 2 ions in pure oxygen and oxygen:nitrogen mixtures have been studied by a Monte Carlo technique for the reduced electric fields up to 350 Td (1 Td = 10 −17 V•cm 2 ). Swarm parameters were calculated for unexcited and vibrationally excited − O 2 ions taking into account vibrational transfer and relaxation, charge transfer and electron detachment. The cross sections for vibrational transfer and relaxation in collisions between − O 2 ions and O 2 molecules were calculated on the basis of the statistical approach that had been successfully used in our previous work to simulate the effect of vibrational excitation and the effect of electric field on electron detachment. Good agreement between the calculated detachment rate and available measurements in oxygen were obtained over a wide range of reduced electric fields without using adjusted parameters. The method was used to calculate detachment rates in air and in some other oxygen:nitrogen mixtures and to study the effect of gas temperature on electron detachment.

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Section: Collisional Processes and Cross Sectionsmentioning

confidence: 99%

Monte Carlo simulation of electron detachment properties for ${{\text{O}_{2}^{{}}}^{-}}$ ions in oxygen and oxygen:nitrogen mixtures

Пономарев

Aleksandrov

2015

Plasma Sources Sci. Technol.

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“…where k L is the Langevin collision rate coefficient and P ij,km is the probability that the intermediate complex formed in a collision between O − 2 (i) and O 2 (k) decomposes into O − 2 (j ) and O 2 (m). The probability P ij,km was [27,28]…”

Section: The Theoretical Approachmentioning

confidence: 99%

Electron detachment from O⁻₂ions in oxygen: the effect of vibrational excitation and the effect of electric field

Aleksandrov¹,

Anokhin

2011

J. Phys. B: At. Mol. Opt. Phys.

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Electron detachment from O − 2 ions has been theoretically studied in oxygen (i) when the gas is vibrationally excited and (ii) when the ions are heated in a strong external electric field. Assuming that electron detachment proceeds via the formation of vibrationally excited temporary O − 2 ions, the detachment rate was determined on the basis of the statistical approach for the vibrational transfer and relaxation in collisions between O − 2 ions and O 2 molecules. The approach used in our previous work to study electron detachment in vibrationally excited oxygen was amended to take into account the conservation of total angular momentum in O − 2 -O 2 collisions. The calculated detachment rates agree well with available measurements in oxygen under equilibrium conditions. The method was used to calculate detachment rates under strongly non-equilibrium conditions in which the vibrational temperature of molecules or ion translational temperature is elevated. The obtained results were compared with available measurements in drift tubes.

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ChemInform Abstract: Three‐Body Ion—Molecule Processes

Cited by 2 publications

References 1 publication

Monte Carlo simulation of electron detachment properties for ${{\text{O}_{2}^{{}}}^{-}}$ ions in oxygen and oxygen:nitrogen mixtures

Monte Carlo simulation of electron detachment properties for ${{\text{O}_{2}^{{}}}^{-}}$ ions in oxygen and oxygen:nitrogen mixtures

Electron detachment from O⁻₂ions in oxygen: the effect of vibrational excitation and the effect of electric field

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ChemInform Abstract: Three‐Body Ion—Molecule Processes

Cited by 2 publications

References 1 publication

Monte Carlo simulation of electron detachment properties for ${{\text{O}_{2}^{{}}}^{-}}$ ions in oxygen and oxygen:nitrogen mixtures

Monte Carlo simulation of electron detachment properties for ${{\text{O}_{2}^{{}}}^{-}}$ ions in oxygen and oxygen:nitrogen mixtures

Electron detachment from O−2ions in oxygen: the effect of vibrational excitation and the effect of electric field

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Electron detachment from O⁻₂ions in oxygen: the effect of vibrational excitation and the effect of electric field