Mechanism of electrical breakdown of gases at very low pressure and interelectrode gap values

Osmokrović, P.

doi:10.1109/27.256784

Cited by 83 publications

(30 citation statements)

References 7 publications

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“…1) At the points close to the Paschen minimum on the right, the electrical breakdown in gases occurs due to the gas mechanism (Townsend mechanism) [16]. The dependence of gas breakdown voltage versus pd product is the result of the similarity law for electrical discharge in gases, i.e., a single breakdown voltage value corresponds to a single value of the pd product.…”

Section: Discussionmentioning

confidence: 98%

Anomalous Paschen effect

Osmokrović

Vasić

2005

IEEE Trans. Plasma Sci.

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The aim of this paper is to discuss the area left of the Paschen minimum, i.e., the area where the anomalous Paschen effect occurs. The experimental results and numerical simulation suggest a slightly different explanation of the anomalous Paschen effect. That is to say, that the anomalous Paschen effect is the result of the breakdown in a nonhomogenous electric field (edge electrode lines).Index Terms-Anomalous Paschen effect, electrical breakdown of gases, nonhomogenous electric field.

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Section: Discussionmentioning

confidence: 98%

Anomalous Paschen effect

Osmokrović

Vasić

2005

IEEE Trans. Plasma Sci.

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“…However, mentioned processes for the intermediate and high pressures or high overvoltages are efficient when the streamer mechanism of electrical breakdown is dominant. This indicates that with the increasing gap Townsend breakdown mechanism proceeds to the transition regime between Townsend and streamer mechanism, as shown in papers [21], [22] for Ar and SF 6 .…”

Section: Resultsmentioning

confidence: 77%

“…In this geometry a minimum of the Paschen curve always exists, but is displaced from the gap. According to the papers [21], [22] the validity of Townsend's theory near of the Paschen minimum and the streamer mechanism on the right side of the Paschen curve are indicated.…”

Section: Electrical Breakdown In Function Of Distance Between Electrodesmentioning

confidence: 99%

Investigation of the electrical breakdown mechanism in neon at 13.3 mbar pressure using the time delay method

Radović¹,

Jovanović

Maluckov

et al. 2003

Contrib. Plasma Phys.

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The results of the investigation of electrical breakdown in neon filled diode at 13.3 mbar pressure in function of distances between electrodes (0.1 < d < 20 mm), using electrical breakdown time delay method, are presented in this paper. The Paschen curve, as well as the electrical breakdown time delay mean values, and discharge formative time dependence of distance between electrodes are analyzed. The electrical breakdown time delay distributions and Laue diagrams, both as the functions of the distances between electrodes, were used in consideration. The shapes of the established distributions indicate the complex nature of the discharge formation mechanism. The results also indicate that on the right hand side of the Paschen curve (pd > 15 mbar·cm) the transition regime between Townsend and streamer mechanism of electrical breakdown is dominant.

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“…The value of the pulse breakdown voltage is a statistical value. According to the similarity law for two-electrode gas insulated systems, with homogeneous field and constant ratio d/Ȝ (d-inter-electrode gap, Ȝ-mean free path of an electron), the d.c. breakdown voltage is constant [5]. As Ȝ is inversely proportional to gas density N, it follows that systems with constant product pd, have constant d.c. breakdown voltage.…”

Section: Theorymentioning

confidence: 96%

Compatibility of the gas filled surge arresters characteristics

et al. 2009

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This paper deals with the influence of external factors (temperatures from -200 o C to 200 o C, radiation by high speed neutrons and thermal neutrons in controlled dosage) and working conditions on the stability of GFSA characteristics.Under well controlled laboratory conditions measurements of d.c. and pulse breakdown voltages were performed . During these measurements, following parameters were varied: 1) temperature, 2) dosage and energy of the previous neutron radiation and 3) energy and the number of previous breakdown occurrences on a surge arrester (aging). In accordance to these measurements, a software package was developed to enable the determination of analytical expressions for a suitable pulse characteristics. Statistical treatment of obtained results determined the influence of temperature, previous neutron radiation and previous discharges on the stability of GFSA characteristics. Also, by application of the statistical tests (U-test), the level of irreversible changes in GFSA characteristics under experimental conditions was determined. Obtained results are explained theoretically.

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Mechanism of electrical breakdown of gases at very low pressure and interelectrode gap values

Cited by 83 publications

References 7 publications

Anomalous Paschen effect

Anomalous Paschen effect

Investigation of the electrical breakdown mechanism in neon at 13.3 mbar pressure using the time delay method

Compatibility of the gas filled surge arresters characteristics

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