Resistance of a pulsed electrical breakdown channel in ionic crystals

2014 ◽  
Vol 59 (4) ◽  
pp. 503-507 ◽  
Author(s):  
I. F. Punanov ◽  
R. V. Emlin ◽  
V. D. Kulikov ◽  
S. O. Cholakh
Keyword(s):  
Electrical Breakdown ◽  
Ionic Crystals ◽  
Breakdown Channel

scholarly journals Радиоизлучение, создаваемое электрическим пробоем пленки полипропилена

2020 ◽  
Vol 46 (22) ◽  
pp. 35
Author(s):  
В.А. Пахотин ◽  
Н.Т. Сударь
Keyword(s):  
Thin Film ◽  
Pulse Duration ◽  
Electrical Breakdown ◽  
Radio Pulse ◽  
Breakdown Channel ◽  
Channel Resistance ◽  
The Relationship

During electrical breakdown of a thin film of polypropylene, radiation of a radio pulse was detected. The pulse duration is about 400 ns. The spectrum of the radio pulse consists of three main frequencies. The relationship between the breakdown channel resistance and the observed spectrum is substantiated

Electrical breakdown channel locality in high voltage pulse breakage

2014 ◽  
Vol 69 ◽  
pp. 196-204 ◽  
Author(s):  
Weiran Zuo ◽  
Fengnian Shi ◽  
Emmy Manlapig
Keyword(s):  
High Voltage ◽  
Voltage Pulse ◽  
Electrical Breakdown ◽  
High Voltage Pulse ◽  
Breakdown Channel

Electrical breakdown in ionic crystals

2009 ◽  
Vol 54 (1) ◽  
pp. 56-61 ◽  
Author(s):  
V. D. Kulikov
Keyword(s):  
Electrical Breakdown ◽  
Ionic Crystals

scholarly journals Theory of electrical breakdown in ionic crystals

1937 ◽  
Vol 160 (901) ◽  
pp. 230-241 ◽  
Keyword(s):  
Ionic Crystal ◽  
Ionic Conduction ◽  
Electrical Breakdown ◽  
Critical Value ◽  
The Other ◽  
Ionic Crystals ◽  
Electrical Field ◽  
Local Melting ◽  
Critical Strength ◽  
Short Times

If an electrical field higher than a certain critical strength F is applied to an ionic crystal, the insulation breaks down. If the temperature is above a certain critical value T 0 (usually of the order 100° C.), F decreases very rapidly with temperature, and the breakdown takes place some seconds after the application of the field. Wagner (cf. Semenoff and Walther 1928) has shown that in this case the breakdown is due to the Joule heat generated by ionic conduction, which causes local melting. For temperatures less than T 0 , on the other hand, the breakdown takes place in a time of the order 10 -8 sec. (Rogowsky 1928) and the variation of F with temperature is very much smaller than in the case of heat breakdown, The phenomenon in this case is referred to as electrical breakdown, any melting of the crystal being ruled out by the short times involved.

scholarly journals Theory of electrical breakdown in ionic crystals. II

1939 ◽  
Vol 172 (948) ◽  
pp. 94-106 ◽  
Keyword(s):  
Kinetic Energy ◽  
Field Strength ◽  
External Field ◽  
Thermal Equilibrium ◽  
Ionic Crystal ◽  
Electrical Breakdown ◽  
The Other ◽  
Lattice Vibrations ◽  
Ionic Crystals ◽  
Electrical Fields

Recently a theory of electrical breakdown in solids has been developed (Fröhlich 1937). This theory is based on the idea that electrical breakdown is a phenomenon due to the acceleration of electrons, as has been suggested by von Hippel (1935) and others. The critical field strength at which the breakdown occurs has been calculated in the following way: In strong external electrical fields, there are always some electrons in the conduction levels of an ionic crystal. These electrons, which are not in thermal equilibrium with the lattice, may be brought into these levels by cold emission or by some similar “pulling out” mechanism. Such an electron will make collisions with the lattice vibrations and thus lose per second a certain energy B ( E ), which depends upon its kinetic energy E . On the other hand, it will gain per second an energy A ( E, F ) from the external field F . Now it has been shown in I that B decreases but that A increases with increasing energy E . Thus there exists always an energy E' for which A = B . An electron with energy E less than E' will, on the average over several collisions, lose energy, whereas an electron with E greater than E' will gain more and more energy.

scholarly journals Влияние растягивающих нагрузок на напряжение пробоя тонких пленок

2020 ◽  
Vol 90 (1) ◽  
pp. 59
Author(s):  
А.М. Пашаев ◽  
А.Х. Джанахмедов ◽  
А.А. Алиев
Keyword(s):  
Breakdown Voltage ◽  
Dielectric Film ◽  
Electrical Breakdown ◽  
Dielectric Strength ◽  
Breakdown Channel

The problem of electrical breakdown of exterior coating of aircraft was discussed and it is shown that the formation of a breakdown channel in a dielectric film is associated with the rupture of polymer macromolecules in stretched zones. On the example of polyether urethane film, it was experimentally revealed that with an increase in tensile loads, the breakdown voltage (dielectric strength) decreases exponentially.

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