The Oscillations of the Positive Glow Corona
| Autor: | R.S. Sigmond |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
010302 applied physics
Quenching Argon Chemistry Oscillation General Physics and Astronomy chemistry.chemical_element 01 natural sciences 7. Clean energy Corona 010305 fluids & plasmas Electric discharge in gases Ion Physics::Plasma Physics [PHYS.HIST]Physics [physics]/Physics archives Ionization Metastability 0103 physical sciences Atomic physics |
| Zdroj: | Journal de Physique IV Proceedings Journal de Physique IV Proceedings, EDP Sciences, 1997, 07 (C4), pp.C4-383-C4-395. ⟨10.1051/jp4:1997431⟩ |
| ISSN: | 1155-4339 1764-7177 |
| Popis: | The paper treats experiments, computer simulations, and the physical explanation of the oscillatory behaviour of positive glow coronas at or below atmospheric density. Experiments show that most positive glows have ionization regions that oscillate with frequencies depending on the gas, geometry, and average discharge current. Our circuit simulating program CIRCSIM with the general gas discharge element GPCS1 reproduces quantitatively Beattie's sphere-to-plane coronas in air, and also our cylindrical coronas in air and in argon with additives. The oscillations demand a fast secondary ionization (feedback) mechanism, and are damped or inhibited by slower feedback processes like positive ion or metastable feedback, and detachment from negative ions. Linear damped oscillations are due to ionization region capacitance and equivalent inductance. Nonlinear self-sustained oscillations are formed by periodic quenching by the generated positive ions. |
| Databáze: | OpenAIRE |
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