TY - GEN
T1 - Dynamics of micropinches in exploding wire and vacuum spark plasmas
AU - Robledo-Martínez, A.
AU - Hernández-Ávila, J. L.
AU - Espino, F.
N1 - Publisher Copyright:
© 2002 IEEE.
PY - 2015
Y1 - 2015
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84952053563&partnerID=8YFLogxK
U2 - 10.1109/PPPS.2001.01002215
DO - 10.1109/PPPS.2001.01002215
M3 - Contribución a la conferencia
AN - SCOPUS:84952053563
T3 - PPPS 2001 - Pulsed Power Plasma Science 2001
SP - 788
EP - 791
BT - PPPS 2001 - Pulsed Power Plasma Science 2001
A2 - Reinovsky, Robert
A2 - Newton, Mark
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference, PPPS 2001
Y2 - 17 June 2001 through 22 June 2001
ER -