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Title: Study of the structure of exploding flat foils at superhigh current density

Abstract

We have investigated the features produced in flat metal foils as a result of nanosecond explosions and phase transitions at current densities of (0.1–2) • 109A/cm2. Thin foils made of aluminum, copper, nickel, and titanium, with thicknesses of 1–15 μm, were tested. Here, the exploded foil structure was studied using X-pinch radiography and laser shadow imaging. Al, Ti, and Cu (5 and 7 μm thick) foils had an initial two-dimensional structure. At the same time, no apparent structure was registered in 1 μm Cu and 5 μm Ni foils. Experiments on generators with different output parameters have shown that the dominant structures that developed in the explosion are either cracks or bubbles and may depend on the orientation of the initial structure in the thin foil with respect to the current direction. In addition, the energy deposited in the foil differs by a factor of about 1.5 for the orthogonal vs parallel current and initial foil structure directions.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]
+ Show Author Affiliations
  1. Russian Academy of Sciences, Moscow (Russia)
  2. Cornell Univ., Ithaca, NY (United States)
Publication Date:
Research Org.:
Cornell Univ., Ithaca, NY (United States); Russian Academy of Sciences, Moscow (Russia)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1725781
Alternate Identifier(s):
OSTI ID: 1970675
Grant/Contract Number:  
NA0003764; 18-02-00631
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 128; Journal Issue: 20; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Optical imaging; diffraction optics; x-ray spectroscopy; thermodynamic states and processes; thermodynamic properties; radiography; x-ray bursts; fluid bubbles; phase transitions; high voltage diodes

Citation Formats

Shelkovenko, T. A., Pikuz, S. A., Tilikin, I. N., Mingaleev, A. R., Romanova, V. M., and Hammer, D. A. Study of the structure of exploding flat foils at superhigh current density. United States: N. p., 2020. Web. doi:10.1063/5.0019330.
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Shelkovenko, T. A., Pikuz, S. A., Tilikin, I. N., Mingaleev, A. R., Romanova, V. M., & Hammer, D. A. Study of the structure of exploding flat foils at superhigh current density. United States. https://doi.org/10.1063/5.0019330
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Shelkovenko, T. A., Pikuz, S. A., Tilikin, I. N., Mingaleev, A. R., Romanova, V. M., and Hammer, D. A. Wed . "Study of the structure of exploding flat foils at superhigh current density". United States. https://doi.org/10.1063/5.0019330. https://www.osti.gov/servlets/purl/1725781.
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@article{osti_1725781,
title = {Study of the structure of exploding flat foils at superhigh current density},
author = {Shelkovenko, T. A. and Pikuz, S. A. and Tilikin, I. N. and Mingaleev, A. R. and Romanova, V. M. and Hammer, D. A.},
abstractNote = {We have investigated the features produced in flat metal foils as a result of nanosecond explosions and phase transitions at current densities of (0.1–2) • 109A/cm2. Thin foils made of aluminum, copper, nickel, and titanium, with thicknesses of 1–15 μm, were tested. Here, the exploded foil structure was studied using X-pinch radiography and laser shadow imaging. Al, Ti, and Cu (5 and 7 μm thick) foils had an initial two-dimensional structure. At the same time, no apparent structure was registered in 1 μm Cu and 5 μm Ni foils. Experiments on generators with different output parameters have shown that the dominant structures that developed in the explosion are either cracks or bubbles and may depend on the orientation of the initial structure in the thin foil with respect to the current direction. In addition, the energy deposited in the foil differs by a factor of about 1.5 for the orthogonal vs parallel current and initial foil structure directions.},
doi = {10.1063/5.0019330},
journal = {Journal of Applied Physics},
number = 20,
volume = 128,
place = {United States},
year = {2020},
month = {11}
}
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https://doi.org/10.1063/5.0019330
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