Electronic Mechanism of Propagation of Nanosecond Breakdown Channel in Liquid Organic Dielectrics

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 (~10 7 cm/s), which are comparable to those obtain...

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Published in:Technical physics 2024, Vol.69 (4), p.850-857
Main Authors: Emlin, R. V., Punanov, I. F., Kulikov, V. D.
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Dielectric breakdown
Dielectric strength
Field strength
Molecular chains
Physics
Physics and Astronomy
Pulse propagation
Time lag
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Punanov, I. F.
Kulikov, V. D.
description 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 (~10 7 cm/s), which are comparable to those obtained earlier in crystals in the same conditions. The high velocities of the anode-initiated breakdown channels are satisfactorily explained within the model of the cascade Auger transitions, developed for the crystalline materials. According to this model, velo city 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.
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subjects Classical and Continuum Physics
Dielectric breakdown
Dielectric strength
Field strength
Molecular chains
Physics
Physics and Astronomy
Pulse propagation
Time lag
title Electronic Mechanism of Propagation of Nanosecond Breakdown Channel in Liquid Organic Dielectrics
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