EMT 38 P An explosive model of a pulsed electric discharge
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REVUTSKII, Victor, MIKHAILOV, Valentin. EMT 38 P An explosive model of a pulsed electric discharge. In: Materials Science and Condensed Matter Physics, Ed. 6, 11-14 septembrie 2012, Chișinău. Chișinău, Republica Moldova: Institutul de Fizică Aplicată, 2012, Editia 6, p. 307. ISBN 978-9975-66-290-1.
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Materials Science and Condensed Matter Physics
Editia 6, 2012
Conferința "Materials Science and Condensed Matter Physics"
6, Chișinău, Moldova, 11-14 septembrie 2012

EMT 38 P An explosive model of a pulsed electric discharge


Pag. 307-307

Revutskii Victor, Mikhailov Valentin
 
Institute of Applied Physics
 
 
Disponibil în IBN: 27 martie 2020


Rezumat

A model of a pulsed electric discharge (PED) which exhibits essentially explosive behavior is described. The processes and phenomena that occur in the discharge channel entirely come within the scope of the definition of explosion, which is a process in which a small amount of energy is rapidly released over a short period of time, which leads to shock and thermal effects on the environment and to the release of the material in solid, liquid, and vapor forms. A PED can be represented as three explosions dependent on three "explosive charges" that develop in the discharge channel (ZС(t)) and on the electrodes (ZА(t), ZК(t)) during the occurrence of current and voltage pulses: i (t) = ie (t) + ii (t), u(t) (figure).figureStages of development of a PED: (a) accumulation of "explosive charges" ZС(t), ZА(t), ZК(t); VС(t), VА(t), VК(t) are explosions; ie (t), ii (t) are the electron and ion currents; (b) stage of explosions. The proposed model has the following features: (1) The model is consistent and uniform; it covers a variety of phenomena and uses the same tools (explosions) to describe the discharge channel and the electric erosion on the electrodes. (2) It gives the possibility to clearly identify the stages of explosive-charge accumulation and explosions and to relate them to the dynamic characteristics of current and voltage pulses. (3) Owing to the sophistication of tools for mathematical modeling and studying explosions and the availability of a large bulk of experimental data on explosions, it is possible to use these tools for an integral description of PEDs. (4) It is possible to use many similarity criteria taking into account the shape of voltage and current pulses, the dynamics of energy release in the interelectrode gap and on the electrodes, the energy sensitivity of electrode materials, and the dynamics of ejection of the electrode materials. (5) Upon the accumulation of experimental data on the explosive PED model, it will be possible to perform a laboratory simulation and study of explosions using PEDs.