Principal Hugoniot, reverberating wave, and mechanical reshock measurements of liquid deuterium to 400 GPa using plate impact techniques

Knudson, Marcus D.; Hanson, D. L.; Bailey, James E.; Hall, C. A.; Asay, J. R.; Deeney, C.

doi:10.1103/physrevb.69.144209

Cited by 220 publications

(160 citation statements)

References 46 publications

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“…While a precompression up 1 GPa increase the sample density approximately 5-fold, it is not sufficient to characterize more than 5.9% of Jupiter's mass. Since precompression above 1 GPa cannot readily be obtained yet, one might consider performing double or triple shock experiments [18] with precompressed samples.…”

Section: Resultsmentioning

confidence: 99%

Implications of Shock Wave Experiments With Precompressed Materials for Giant Planet Interiors

Militzer

Hubbard

2008

AIP Conference Proceedings

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Abstract. This work uses density functional molecular dynamics simulations of fluid helium at high pressure to examine how shock wave experiments with precompressed samples can help characterizing the interior of giant planets. In particular, we analyze how large of a precompression is needed to probe a certain depth in a planet's gas envelope. We find that precompressions of up to 0.1, 1.0, 10, or 100 GPa are needed to characterized 2.5, 5.9, 18, to 63% of Jupiter's envelope by mass.

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Section: Resultsmentioning

confidence: 99%

Implications of Shock Wave Experiments With Precompressed Materials for Giant Planet Interiors

Militzer

Hubbard

2008

AIP Conference Proceedings

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“…High-current-density short circuit geometries and current pulse-shaping techniques have been developed to provide magnetically-driven high pressure capabilities for launching hypervelocity flyer plates for dynamic material properties and equation-of-state (EOS) experiments. Given the long standing controversy surrounding the compressibility of liquid D 2 [6][7][8][9], it would be highly beneficial to obtain similar experimental results on LHe with the mature Z shock physics platform developed over the last decade. Therefore, there is a crucial need for a cryogenic capability to generate large area LHe samples for high accuracy shock compression experiments on Z.…”

Section: Motivation and Scope Of Ldrdmentioning

confidence: 99%

Shock compression of liquid helium and helium-hydrogen mixtures : development of a cryogenic capability for shock compression of liquid helium on Z, final report for LDRD Project 141536.

Lopez¹,

Knudson²,

Shelton³

et al. 2010

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This final report on SNL/NM LDRD Project 141536 summarizes progress made toward the development of a cryogenic capability to generate liquid helium (LHe) samples for high accuracy equation-of-state (EOS) measurements on the Z current drive. Accurate data on He properties at Mbar pressures are critical to understanding giant planetary interiors and for validating first principles density functional simulations, but it is difficult to condense LHe samples at very low temperatures (<3.5 K) for experimental studies on gas guns, magnetic and explosive compression devices, and lasers. We have developed a conceptual design for a cryogenic LHe sample system to generate quiescent superfluid LHe samples at 1.5-1.8 K. This cryogenic system adapts the basic elements of a continuously operating, self-regulating 4 He evaporation refrigerator to the constraints of shock compression experiments on Z. To minimize heat load, the sample holder is surrounded by a double layer of thermal radiation shields cooled with LHe to 5 K. Delivery of LHe to the pumped-He evaporator bath is controlled by a flow impedance. The LHe sample holder assembly features modular components and simplified fabrication techniques to reduce cost and complexity to levels required of an expendable device. Prototypes have been fabricated, assembled, and instrumented for initial testing. Cryogenic Capability for LHe Shock Compression on Z ________________________________________________________________________ 4

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“…1 The key to solving these problems is the accurate measurement and determination of the equation of state (EOS) of deuterium, helium, and their mixtures over a wide range of pressures and temperatures. 2 In the past several decades, much experimental effort has been directed towards deuterium or helium on aspects such as the two-stage light gas gun, 3,4 convergent explosives, [5][6][7] magnetically launched flyer [8][9][10][11] and laser-driven shock experiments. [12][13][14][15][16][17][18][19][20] In shock experiments, a single shock drives the material to a point on the principal Hugoniot, and the Rankine-Hugoniot conservation equations relate the states of the material before and after…”

Section: Introductionmentioning

confidence: 99%

Measurements of the principal Hugoniots of dense gaseous deuterium−helium mixtures: Combined multi-channel optical pyrometry, velocity interferometry, and streak optical pyrometry measurements

Chen²,

Gu³

et al. 2016

AIP Advances

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The accurate hydrodynamic description of an event or system that addresses the equations of state, phase transitions, dissociations, ionizations, and compressions, determines how materials respond to a wide range of physical environments. To understand dense matter behavior in extreme conditions requires the continual development of diagnostic methods for accurate measurements of the physical parameters. Here, we present a comprehensive diagnostic technique that comprises optical pyrometry, velocity interferometry, and time-resolved spectroscopy. This technique was applied to shock compression experiments of dense gaseous deuterium–helium mixtures driven via a two-stage light gas gun. The advantage of this approach lies in providing measurements of multiple physical parameters in a single experiment, such as light radiation histories, particle velocity profiles, and time-resolved spectra, which enables simultaneous measurements of shock velocity, particle velocity, pressure, density, and temperature and expands understanding of dense high pressure shock situations. The combination of multiple diagnostics also allows different experimental observables to be measured and cross-checked. Additionally, it implements an accurate measurement of the principal Hugoniots of deuterium−helium mixtures, which provides a benchmark for the impedance matching measurement technique.

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Principal Hugoniot, reverberating wave, and mechanical reshock measurements of liquid deuterium to 400 GPa using plate impact techniques

Cited by 220 publications

References 46 publications

Implications of Shock Wave Experiments With Precompressed Materials for Giant Planet Interiors

Implications of Shock Wave Experiments With Precompressed Materials for Giant Planet Interiors

Shock compression of liquid helium and helium-hydrogen mixtures : development of a cryogenic capability for shock compression of liquid helium on Z, final report for LDRD Project 141536.

Measurements of the principal Hugoniots of dense gaseous deuterium−helium mixtures: Combined multi-channel optical pyrometry, velocity interferometry, and streak optical pyrometry measurements

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