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| Formato: | Artículo científico |
| Lenguaje: | en |
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Sociedade Brasileira de Física
2013
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| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=46426434004 |
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- Breakdown Voltage Distributions in Ne-Filled Diode at 1.33 mbar with Corona Appearance in Pre-breakdown Regime Miodrag K. Radovic Cedomir A. Maluckov Jugoslav P. Karamarkovic Saša A. Rancev Slobodan D. Mitic Física, Astronomía y Matemáticas Corona discharge Electrical breakdown Breakdown voltage distribution The electrical breakdown of a gas subject to an up-ramping external voltage is studied, experimentally and theoretically, under conditions leading to the appearance of a positive corona at the anode in the prebreakdown regime. Experimentally, voltage ramps with various rates k in the interval ranging from 0.3 V/s to 26 kV/s are applied to the diode, with the histogram of breakdown voltages being recorded for each rate. The theoretical model gives attention to the pre-breakdown multiplication causing the corona, which tends to reduce the statistical time delay tS before the primary electron is released and hence to make tS comparable to the formative time tF . The multiplication being therefore expected to affect the voltage dependence of the electron yield, a nonlinear equation relating the yield to the overvoltage is introduced. The resulting theoretical expression for the breakdown voltage distribution agrees well with the experimental histograms. Especially noteworthy is the good agreement with the lowvoltage tail of the distribution, a segment of the data that has challenged previous theoretical analyses of the problem. 2013 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46426434004 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3 Vol.43