ISSN:
1572-8986
Keywords:
Glow discharge
;
singlet oxygen
;
negative ion
;
oxygen atom
;
kinetic model
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Technology
Notes:
Abstract A simple kinetic model predicting the concentration of oxygen atoms, metastable singlet molecules O2(a 1Δ) and negative ions O — in the positive column of a DC glow discharge is developed. The calculated O and O2(a 1Δ) concentrations are compared to previously reported measurements for pressuresp=0.2–2 Torr and discharge currentsI=10–80 mA. The electron density calculated from the continuity equationj=n e e v d agrees well with experiment. The rate coefficients for electron impact processes used in the balance equations of O, O2(a 1Δ), and O− were taken from the literature as a function of the reduced electric fieldE/N forE/N=40–80 Td. A reasonable agreement is obtained between the model and the experiment with a set of 10 reactions for the production and destruction of the above-mentioned species
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01054280
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