Investigation of breakdown in porous ceramics initiated by nanosecond pulses

Punanov, I. F.; Emlin, R. V.; Morozov, P. A.; Cholakh, S. O.

doi:10.1007/s11182-012-9794-5

Cited by 6 publications

(2 citation statements)

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“…The velocity of breakdown channel propagation was calculated as v a = d/τ . The design of the pulse generator and the method for measuring the velocity of the breakdown channel propagation in liquid and solid dielectrics are described in more details in papers [22,24,29].…”

Section: Methodsmentioning

confidence: 99%

“…In this paper the experimental results on the velocity of the anode-initiated breakdown front in liquid dielectrics (organofluorine and organosilicon liquids, transformer oil, ethanol) under nanosecond exposure to voltage pulses with a width of ∼ 10 −8 s and amplitude of ∼ 140 kV [22][23][24] are discussed and interpreted within the framework of the mechanism of free electrons generation by means of interatomic Auger transitions.…”

Section: Introductionmentioning

confidence: 99%

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Electronic mechanism of propagation of nanosecond breakdown channel in liquid organic dielectrics

2022

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The mechanism of anode-initiated breakdown in liquid organic dielectrics with long molecular chains is proposed on the basis of the experimental data on high velocities of the breakdown channel propagation in organosilicon and organofluorine liquids (~107 cm/s), which are comparable to that obtained earlier in crystals in the same conditions. The high velocities of the anode-initiated breakdown channel are satisfactory explained within the model of the cascade Auger transitions, developed for the crystalline materials. According to this model, velocity of the breakdown channel propagation is proportional to the electrical field strength. The time delay in breakdown channel formation relative to the voltage pulse rise time does not exceed ~5·10-10 s within the margin of error Keywords: electrical breakdown in liquid, nanosecond breakdown, breakdown mechanism.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%