The magnetically driven plasma jet produces a pressure of 33 GPa on PTS

We report on experiments in which a magnetically driven plasma jet was used to hit a 500 μm thick planar aluminum target. The plasma jet was produced by using a 50 μm thick aluminum radial foil, which was subjected to 4 MA, 90 ns rising time current on the primary test stand pulsed power facility. T...

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Bibliographic Details
Published in:Physics of plasmas 2017-01, Vol.24 (1)
Main Authors: Xu, Qiang, Dan, Jiakun, Wang, Guilin, Guo, Shuai, Zhang, Siqun, Cai, Hongchun, Ren, Xiao, Wang, Kunlun, Zhou, Shaotong, Zhang, Zhaohui, Huang, Xianbin
Format: Article
Language:English
Subjects:
Aluminum
Foils
Plasma jets
Radial velocity
Test stands
Velocimetry
Velocity
Velocity measurement
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Summary:We report on experiments in which a magnetically driven plasma jet was used to hit a 500 μm thick planar aluminum target. The plasma jet was produced by using a 50 μm thick aluminum radial foil, which was subjected to 4 MA, 90 ns rising time current on the primary test stand pulsed power facility. The subsequent magnetic bubbles propagate with radial velocity reaching 200 km/s and an axial velocity of 230 km/s. After the plasma knocks onto the target, a shock forms in the target. When the shock gets to the backside of the target, we measure the velocity of the moving surface using dual laser heterodyne velocimetry. By using the Hugoniot relations, we know that the plasma jet produced a pressure of 33 GPa. According to the measured pressure and the velocity of the plasma jet, the density of the jet can be also roughly estimated.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4974038