Free-surface velocity measurements of opaque materials in laser-driven shock-wave experiments using photonic Doppler velocimetry

Nissim N.; Greenberg E.; Werdiger M.; Horowitz Y.; Bakshi L.; Ferber Y.; Glam B.; Fedotov-Gefen A.; Perelmutter L.; Eliezer S.

doi:10.1063/5.0046884

Volume 6 Issue 4

Jul. 2021

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Nissim N., Greenberg E., Werdiger M., Horowitz Y., Bakshi L., Ferber Y., Glam B., Fedotov-Gefen A., Perelmutter L., Eliezer S.. Free-surface velocity measurements of opaque materials in laser-driven shock-wave experiments using photonic Doppler velocimetry[J]. Matter and Radiation at Extremes, 2021, 6(4): 046902. doi: 10.1063/5.0046884

Citation:

Nissim N., Greenberg E., Werdiger M., Horowitz Y., Bakshi L., Ferber Y., Glam B., Fedotov-Gefen A., Perelmutter L., Eliezer S.. Free-surface velocity measurements of opaque materials in laser-driven shock-wave experiments using photonic Doppler velocimetry[J]. Matter and Radiation at Extremes, 2021, 6(4): 046902. doi: 10.1063/5.0046884

Citation:

Nissim N., Greenberg E., Werdiger M., Horowitz Y., Bakshi L., Ferber Y., Glam B., Fedotov-Gefen A., Perelmutter L., Eliezer S.. Free-surface velocity measurements of opaque materials in laser-driven shock-wave experiments using photonic Doppler velocimetry[J]. Matter and Radiation at Extremes, 2021, 6(4): 046902. doi: 10.1063/5.0046884

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Free-surface velocity measurements of opaque materials in laser-driven shock-wave experiments using photonic Doppler velocimetry

doi: 10.1063/5.0046884

Applied Physics Division, Soreq NRC, Yavne, Israel

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Corresponding author: a)Author to whom correspondence should be addressed: noaznissim@gmail.com
Received Date: 2021-02-08
Accepted Date: 2021-05-07

Available Online: 2021-07-01

Publish Date: 2021-07-15

Abstract

Abstract

We present a novel photonic Doppler velocimetry (PDV) design for laser-driven shock-wave experiments. This PDV design is intended to provide the capability of measuring the free-surface velocity of shocked opaque materials in the terapascal range. We present measurements of the free-surface velocity of gold for as long as ∼2 ns from the shock breakout, at pressures of up to ∼7 Mbar and a free-surface velocity of 7.3 km/s with an error of ∼1.5%. Such laboratory pressure conditions are achieved predominantly at high-intensity laser facilities where the only velocity diagnostic is usually line-imaging velocity interferometry for any reflector. However, that diagnostic is limited by the lower dynamic range of the streak camera (at a temporal resolution relevant to laser shock experiments) to measure the free-surface velocity of opaque materials up to pressures of only ∼1 Mbar. We expect the proposed PDV design to allow the free-surface velocity of opaque materials to be measured at much higher pressures.

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References(12)

References

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