Title :
The Effects of Preheating of a Fine Tungsten Wire and the Polarity of a High-Voltage Electrode on the Energy Characteristics of an Electrically Exploded Wire in Vacuum
Author :
Rousskikh, Alexander G. ; Baksht, Rina B. ; Chaikovsky, Stanislav A. ; Fedunin, Anatoly V. ; Khishchenko, Konstantin V. ; Labetsky, Aleksey Yu ; Levashov, Pavel R. ; Shishlov, Alexander V. ; Tkachenko, Svetlana I.
Author_Institution :
Inst. of High Current Electron., Siberian Branch of Russian Acad. of Sci., Tomsk
Abstract :
Results obtained from experimental and numerical studies of tungsten wires electrical explosion in vacuum are presented. The experiments were performed both with and without preheating of the wires using positive or negative polarity of a high-voltage electrode. Preheating is shown to increase energy deposition in the wire core due to a longer resistive heating stage. The effect was observed both in single wire and wire array experiments. The evolution of the phase state of the wire material during explosion was examined by means of a one-dimensional numerical simulation using a semiempirical wide-range equation of state describing the properties of tungsten, with allowance made for melting and vaporization
Keywords :
electrodes; exploding wires; explosions; numerical analysis; tungsten; vacuum breakdown; W; fine tungsten wire; melting; negative high-voltage electrode polarity; one-dimensional numerical simulation; positive high-voltage electrode polarity; preheating effects; resistive heating; semiempirical wide-range equation of state; tungsten wire electrical explosion; vacuum breakdown; vaporization; wire core energy deposition; Cameras; Corona; Electric breakdown; Electrodes; Elementary particle vacuum; Explosions; Plasma materials processing; Tungsten; Voltage; Wire; Breakdown; electrical explosion; energy deposition; tungsten; wire array;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2006.883385
