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Influence of a Nitrogen Admixture on the Anomalous Memory Effect in the Breakdown of Low-Pressure Argon in a Long Discharge Tube.
- Source :
-
Plasma Physics Reports . Mar2018, Vol. 44 Issue 3, p334-344. 11p. - Publication Year :
- 2018
-
Abstract
- The memory effect (the dependence of the dynamic breakdown voltage <italic>U</italic><italic>b</italic> on the time interval τ between voltage pulses) in pulse-periodic discharges in pure argon and the Ar + 1%N2 mixture was studied experimentally. The discharge was ignited in a 2.8-cm-diameter tube with an interelectrode distance of 75 cm. The measurements were performed at gas pressures of <italic>P</italic> = 1, 2, and 5 Torr and discharge currents in a steady stage of the discharge of <italic>I</italic> = 20 and 56 mA. Breakdown was produced by applying positive-polarity voltage pulses, the time interval between pulses being in the range of τ = 0.5-40 ms. In this range of τ values, a local maximum (the anomalous memory effect) was observed in the dependence <italic>U</italic><italic>b</italic>(τ). It is shown that addition of nitrogen to argon substantially narrows the range of τ values at which this effect takes place. To analyze the measurement results, the plasma parameters in a steady-state discharge (in both pure argon and the Ar + 1%N2 mixture) and its afterglow were calculated for the given experimental conditions. Analysis of the experimental data shows that the influence of the nitrogen admixture on the shape of the dependence <italic>U</italic><italic>b</italic>(τ) is, to a large extent, caused by the change in the decay rate of the argon afterglow plasma in the presence of a nitrogen admixture. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BREAKDOWN voltage
*NITROGEN
*LOW pressure (Science)
*ARGON
*GAS mixtures
Subjects
Details
- Language :
- English
- ISSN :
- 1063780X
- Volume :
- 44
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Plasma Physics Reports
- Publication Type :
- Academic Journal
- Accession number :
- 128838105
- Full Text :
- https://doi.org/10.1134/S1063780X18030017