Electric explosion of fine tungsten wires in vacuum
- 1 November 2004
- journal article
- Published by Pleiades Publishing Ltd in Plasma Physics Reports
- Vol. 30 (11), 944-952
- https://doi.org/10.1134/1.1825130
Abstract
A study is made of the breakdown of a fine wire during its electric explosion in vacuum. The problem of how the wire diameter, the rate of energy deposition in the wire, and the insulation of the electrode surface near the electrode-wire contact influence the wire explosion and the accompanying breakdown is investigated experimentally. The wire explosion was performed at a positive polarity of the high-voltage electrode. A current density growth rate of 6×1011–5×1016 A/(s cm2) is achieved. It is shown that the breakdown along a wire is similar in many respects to the gas breakdown. The insulation of the wire surface makes it possible to avoid breakdown and to increase the deposited energy to values sufficient for the wire sublimation.Keywords
This publication has 11 references indexed in Scilit:
- Prolonged plasma production at current-driven implosion of wire arrays on Angara-5-1 facilityIEEE Transactions on Plasma Science, 2002
- Time-resolved spectroscopic measurements of ∼1 keV, dense, subnanosecond X-pinch plasma bright spotsPhysics of Plasmas, 2002
- Experiments measuring the initial energy deposition, expansion rates and morphology of exploding wires with about 1 kA/wirePhysics of Plasmas, 2001
- The effect of insulating coatings on exploding wire plasma formationPhysics of Plasmas, 2000
- Titanium K-shell x-ray production from high velocity wire array implosions on the 20-MA Z acceleratorPhysics of Plasmas, 1999
- The current density and the specific energy input in fast electrical explosionIEEE Transactions on Plasma Science, 1999
- K-shell radiation physics in the ultrahigh optical depth pinches of the Z generatorPhysics of Plasmas, 1998
- Tungsten wire-array Z-pinch experiments at 200 TW and 2 MJPhysics of Plasmas, 1998
- A high impedance mega-ampere generator for fiber z-pinch experimentsReview of Scientific Instruments, 1996
- Metals during rapid heating by dense currentsUspekhi Fizicheskih Nauk, 1984