Dynamics of micropinches in exploding wire and vacuum spark plasmas

A. Robledo-Martínez, J. L. Hernández-Ávila, F. Espino

Research output: Contribution to conferencePaper

Abstract

© 2002 IEEE. A vacuum spark develops in the metallic vapor emitted by the electrodes. The plasma thus created experiences contractions that originate plasma points or micropinches. We report here an investigation into the dynamics of these both in the vacuum spark and the exploding wire. A fast, 2 kJ generator was used for the experiments. The diagnostics employed include optical frame and streak photography, time-resolved filtered X-ray detection and pinhole X-ray photography. The results obtained indicate that there is a substantial amount of pinching, some of it producing X-radiation. The energy of the X-rays tend to be rather soft and no characteristic lines were detected, even when swapping electrodes, which are made of dissimilar material. This demonstrates that radiative collapse is not attained at this type of energy and that for this type of experiments it is irrelevant what metallic vapors initiate the vacuum arc.
Original languageAmerican English
Pages788-791
Number of pages708
DOIs
StatePublished - 1 Jan 2015
EventPPPS 2001 - Pulsed Power Plasma Science 2001 -
Duration: 1 Jan 2015 → …

Conference

ConferencePPPS 2001 - Pulsed Power Plasma Science 2001
Period1/01/15 → …

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Exploding wires
Electric sparks
Vacuum
Plasmas
Vapors
Streak cameras
Dissimilar materials
X rays
Electrodes
Radiography
Experiments
Radiation

Cite this

Robledo-Martínez, A., Hernández-Ávila, J. L., & Espino, F. (2015). Dynamics of micropinches in exploding wire and vacuum spark plasmas. 788-791. Paper presented at PPPS 2001 - Pulsed Power Plasma Science 2001, . https://doi.org/10.1109/PPPS.2001.01002215
Robledo-Martínez, A. ; Hernández-Ávila, J. L. ; Espino, F. / Dynamics of micropinches in exploding wire and vacuum spark plasmas. Paper presented at PPPS 2001 - Pulsed Power Plasma Science 2001, .708 p.
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Robledo-Martínez, A, Hernández-Ávila, JL & Espino, F 2015, 'Dynamics of micropinches in exploding wire and vacuum spark plasmas', Paper presented at PPPS 2001 - Pulsed Power Plasma Science 2001, 1/01/15 pp. 788-791. https://doi.org/10.1109/PPPS.2001.01002215

Dynamics of micropinches in exploding wire and vacuum spark plasmas. / Robledo-Martínez, A.; Hernández-Ávila, J. L.; Espino, F.

2015. 788-791 Paper presented at PPPS 2001 - Pulsed Power Plasma Science 2001, .

Research output: Contribution to conferencePaper

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Robledo-Martínez A, Hernández-Ávila JL, Espino F. Dynamics of micropinches in exploding wire and vacuum spark plasmas. 2015. Paper presented at PPPS 2001 - Pulsed Power Plasma Science 2001, . https://doi.org/10.1109/PPPS.2001.01002215