Abstract
An experiment was performed with the aim to determine the expansion velocity of the corona that is formed around a wire exploded in vacuum. The corona expansion velocity was found for Al and W wires as the wire current density was increased to 1× 108 -1.4× 108 A/cm2. It was estimated by the time at which current started flowing through auxiliary electrodes separated from the wire axis by a certain distance. The measurements were performed with preliminary heated and unheated wires. It has been demonstrated that for unheated wires the expansion velocity of the plasma corona is determined by the expansion velocity of the desorbed gas and approximately equals (7±0.5) × 106, (9±0.5) × 106, and (1.1±0.6) × 107 cm/s at a generator charge voltage of 10, 20, and 30 kV, respectively. For preliminary heated tungsten wires the metal vapor expansion velocity was (4.2±0.5) × 106, (7±0.5) × 106, and (9±0.6) × 106 cm/s at a charge voltage of 10, 20, and 30 kV, respectively.
| Original language | English |
|---|---|
| Article number | 033505 |
| Journal | Physics of Plasmas |
| Volume | 17 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2010 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
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Expansion of the plasma corona from a wire exploded in vacuum. / Rousskikh, A. G.; Oreshkin, V. I.; Zhigalin, A.; Beilis, I. I.; Baksht, R. B.
In: Physics of Plasmas, Vol. 17, No. 3, 033505, 2010.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Expansion of the plasma corona from a wire exploded in vacuum
AU - Rousskikh, A. G.
AU - Oreshkin, V. I.
AU - Zhigalin, A.
AU - Beilis, I. I.
AU - Baksht, R. B.
PY - 2010
Y1 - 2010
N2 - An experiment was performed with the aim to determine the expansion velocity of the corona that is formed around a wire exploded in vacuum. The corona expansion velocity was found for Al and W wires as the wire current density was increased to 1× 108 -1.4× 108 A/cm2. It was estimated by the time at which current started flowing through auxiliary electrodes separated from the wire axis by a certain distance. The measurements were performed with preliminary heated and unheated wires. It has been demonstrated that for unheated wires the expansion velocity of the plasma corona is determined by the expansion velocity of the desorbed gas and approximately equals (7±0.5) × 106, (9±0.5) × 106, and (1.1±0.6) × 107 cm/s at a generator charge voltage of 10, 20, and 30 kV, respectively. For preliminary heated tungsten wires the metal vapor expansion velocity was (4.2±0.5) × 106, (7±0.5) × 106, and (9±0.6) × 106 cm/s at a charge voltage of 10, 20, and 30 kV, respectively.
AB - An experiment was performed with the aim to determine the expansion velocity of the corona that is formed around a wire exploded in vacuum. The corona expansion velocity was found for Al and W wires as the wire current density was increased to 1× 108 -1.4× 108 A/cm2. It was estimated by the time at which current started flowing through auxiliary electrodes separated from the wire axis by a certain distance. The measurements were performed with preliminary heated and unheated wires. It has been demonstrated that for unheated wires the expansion velocity of the plasma corona is determined by the expansion velocity of the desorbed gas and approximately equals (7±0.5) × 106, (9±0.5) × 106, and (1.1±0.6) × 107 cm/s at a generator charge voltage of 10, 20, and 30 kV, respectively. For preliminary heated tungsten wires the metal vapor expansion velocity was (4.2±0.5) × 106, (7±0.5) × 106, and (9±0.6) × 106 cm/s at a charge voltage of 10, 20, and 30 kV, respectively.
UR - http://www.scopus.com/inward/record.url?scp=77950579792&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77950579792&partnerID=8YFLogxK
U2 - 10.1063/1.3325349
DO - 10.1063/1.3325349
M3 - Article
AN - SCOPUS:77950579792
VL - 17
JO - Physics of Plasmas
JF - Physics of Plasmas
SN - 1070-664X
IS - 3
M1 - 033505
ER -