Measurements of energy absorbed in metal foils during their exposure to plasma jet at the Plasma Focus facility

The work presents the results of estimating the energy absorbed in metal foils (copper, aluminium, and vanadium) during their exposure to the high-speed (>107 cm/s) plasma jets generated in a plasma focus facility. The absorbed energy was calculated under assumption that the plasma jet power is n...

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Bibliographic Details
Published in:Journal of physics. Conference series 2020-10, Vol.1647 (1), p.12017
Main Authors: Kokololtsev, V N, Maslyaev, S A, Borovitskaya, I V, Nikulin, V Ya, Silin, P V, Peregudova, E N
Format: Article
Language:English
Subjects:
Ablation
Aluminum
Copper
Energy
Exposure
Liquid metals
Mathematical analysis
Metal foils
Physics
Plasma
Plasma focus
Plasma jets
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Summary:The work presents the results of estimating the energy absorbed in metal foils (copper, aluminium, and vanadium) during their exposure to the high-speed (>107 cm/s) plasma jets generated in a plasma focus facility. The absorbed energy was calculated under assumption that the plasma jet power is not too high, which allowed us to neglect the loss of material due to evaporation. In this case, when the foils were exposed to the single plasma jet, the amount of absorbed energy was determined using data on the mass of the molten metal layer and the ablated melt mass. The energy absorbed in the Al, Cu and V foils calculated in this way turned out to be ~6.5, 5 and 2.1 J, respectively, which is considerably less than the plasma jet energy, which is of the of the order ~100 J.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1647/1/012017