Influence of the dissociation process of oxygen on the electron swarm parameters in oxygen

Journal Article · Tue May 01 00:00:00 EDT 1990 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.344985· OSTI ID:6902949

Kajita, S; Ushiroda, S; Kondo, Y ^[1]

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1. Department of Electrical Engineering, Toyota College of Technology, 2-1, Eisei-cho, Toyota-city 471, Japan (JP)

Previous theoretical studies assumed that the energy loss of a colliding electron has a discrete value for dissociative excitation of molecular oxygen. In the calculation of the rate coefficients for oxygen atom yields using the Boltzmann equation, the previous reports have used discrete energy loss values of 6.1 eV for {ital A}{sup 3}{Sigma}{sup +}{sub {ital u}} and 8.4 eV for {ital B}{sup 3}{Sigma}{sup {minus}}{sub {ital u}}. In this paper, we take account of the fact that the excitation to {ital B}{sup 3}{Sigma}{sup {minus}}{sub {ital u}} has a continuum energy loss spectrum and describe the effects on calculated swarm parameters that are important in the simulation of ozonizer discharges. It can be seen that the use of a continuum electron energy-loss spectrum as opposed to a discrete electron energy loss associated with excitation to the {ital B}{sup 3}{Sigma}{sup {minus}}{sub {ital u}} state makes no significant difference in the calculated values of electron swarm parameters in oxygen. We also calculate the ozone yield as a function of {ital E}/{ital N} obtained from the analysis of the energy balance equation. In this case, the partial cross section for dissociation via {ital B}{sup 3}{Sigma}{sup {minus}}{sub {ital u}} assuming a continuum electron energy-loss spectrum can have significant effects on the atomic oxygen yields at different {ital E}/{ital N}.

• OSTI ID: 6902949
• Journal Information: Journal of Applied Physics; (USA), Vol. 67:9; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
OXYGEN
ELECTRON-ATOM COLLISIONS
BOLTZMANN EQUATION
CROSS SECTIONS
DISSOCIATION
ELECTRIC DISCHARGES
ELECTRON SPECTRA
ENERGY LOSSES
ATOM COLLISIONS
COLLISIONS
DIFFERENTIAL EQUATIONS
ELECTRON COLLISIONS
ELEMENTS
EQUATIONS
LOSSES
NONMETALS
PARTIAL DIFFERENTIAL EQUATIONS
SPECTRA
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena