Peculiarities of planar shockwave interaction with air–water interface and solid target

Maler, D.; Efimov, S.; Liverts, M.; Theocharous, S.; Strucka, J.; Yao, Y.; Proud, W.; Rack, A.; Lukic, B.; Bland, S. N.; Krasik, Ya. E.

doi:10.1063/5.0095506

DOE OSTI · 1871950

Peculiarities of planar shockwave interaction with air–water interface and solid target

Maler, D.·Efimov, S.·Liverts, M.·Theocharous, S.·Strucka, J.·Yao, Y.·Proud, W.·Rack, A.·Lukic, B.·Bland, S. N.·Krasik, Ya. E.

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Abstract

We present the results of the research on underwater electrical explosion of planar copper wire arrays, accompanied by the generation of a planar shock, using the synchrotron-based phase-contrast radiography imaging capabilities of the ID19 beamline at the European Synchrotron Radiation Facility. It is shown that the interaction of a strong shock with an air–water interface leads to additional acceleration of the wire expansion due to a rarefaction wave along with the emergence of micro-jets. In the case of a target placed above the array, we observed the formation of a cavity between the array and the target due to the interaction of two rarefaction waves. Furthermore, the results of two-dimensional hydrodynamic simulations of the wire explosion and the interaction of the generated shock with the water–air and water-target interfaces showed good agreement with experimental results.

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY Air-water interface Exploding wire method Hydrodynamics simulations Pulse generators Radiography Shock waves Synchrotron radiation Wave mechanics X-rays

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Maler, D., Efimov, S., Liverts, M., Theocharous, S., Strucka, J., Yao, Y., Proud, W., Rack, A., Lukic, B., Bland, S. N., Krasik, Ya. E.. 2022-06-01. Peculiarities of planar shockwave interaction with air–water interface and solid target. https://doi.org/10.1063/5.0095506

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