Sound Velocities in Shock‐Synthesized Stishovite to 72 GPa

Berryman, Eleanor J.; Winey, J. M.; Gupta, Y. M.; Duffy, Thomas S.

doi:10.1029/2019gl085301

Cited by 7 publications

(3 citation statements)

References 57 publications

(122 reference statements)

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“…In spite of differences in the strain rate for gas gun compared to laser-driven shock impact, the obtained fit for U s -u p matches well with the literature values. 2,4,[14][15][16] The pressure vs volume compression ( ρ o ρ ) were also seen to match with studies by Renganathan et al 2 and Alexander et al 4 Figures 3 and 4 show that U s -u p is linear upto 315 GPa within the experimental error bars. Furthermore, the shocked SLG is seen to compress smoothly from 30 to 70 GPa without any sudden changes in the compressibility.…”

Section: Discussionsupporting

confidence: 75%

“…2,4,14-16 (b) Pressure vs volume compression calculated from U s -u p relationship compared with the literature. 2,[14][15][16] relationship was seen to agree well with the literature, indicating that shock behavior is similar in SLG for both laser-driven shock and gas gun studies. The lack of kinks or discontinuities in U s -u p data within the error bars suggests there is no phase transition to stishovite up to 70 GPa, contrary to that observed for fused silica.…”

Section: Discussionsupporting

confidence: 74%

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Behavior of soda-lime silicate glass under laser-driven shock compression up to 315 GPa

Madhavi

Jangid

Christiansen-Salameh

et al. 2023

Journal of Applied Physics

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Shock experiments give a unique insight into the behavior of matter subjected to extremely high pressures and temperatures. Understanding the behavior of materials under such extreme conditions is key to modeling material failure and deformation dynamics under impact. While studies on pure silica are extensive, the shock behavior of other commercial silicates that contain additional oxides has not been systematically investigated. To better understand the role of composition in the dynamic behavior of silicates, we performed laser-driven dynamic compression experiments on soda-lime glass (SLG) up to 315 GPa. Using the accurate pulse shaping offered by the long pulse laser system at the Matter in Extreme Conditions end-station at the Linac Coherent Light Source, SLG was shock compressed along the Hugoniot to multiple pressure-temperature points. Velocity Interferometer System for Any Reflector was used to measure the velocity and determine the pressure inside the SLG. The Us–up relationship obtained agrees well with the previous parallel plate impact studies. Within the error bars, no transformation to the crystalline phase was observed up to 70 GPa, which is in contrast to the behavior of pure silica under shock compression. Our studies show that the glass composition strongly influences the shock compression behavior of the silicate glasses.

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Section: Discussionsupporting

confidence: 75%

Section: Discussionsupporting

confidence: 74%

Behavior of soda-lime silicate glass under laser-driven shock compression up to 315 GPa

Madhavi

Jangid

Christiansen-Salameh

et al. 2023

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…The system errors such as M parameter, VISAR spatial resolution mainly resulted in uncertainty 4-8% of sound velocities, while the random errors was estimated to be less than 1%. This level of total uncertainty is similar to techniques using laser unsteady wave method [42,43] and overtaking method with gas guns [32,33,52]. But this lateral release method provide an absolutely determined sound velocity and the uncertainties from unsteady wave method may be underestimated because they do not consider the uncertainties coming from sound velocity standard [42,43].…”

Section: Experimental Diagnostic and Analysismentioning

confidence: 77%

Sound Velocity Measurement of Shock-Compressed Quartz at Extreme Conditions

et al. 2021

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The physical properties of basic minerals such as magnesium silicates, oxides, and silica at extreme conditions, up to 1000 s of GPa, are crucial to understand the behaviors of magma oceans and melting in Super-Earths discovered to data. Their sound velocity at the conditions relevant to the Super-Earth’s mantle is a key parameter for melting process in determining the physical and chemical evolution of planetary interiors. In this article, we used laser indirectly driven shock compression for quartz to document the sound velocity of quartz at pressures of 270 GPa to 870 GPa during lateral unloadings in a high-power laser facility in China. These measurements demonstrate and improve the technique proposed by Li et al. [PRL 120, 215703 (2018)] to determine the sound velocity. The results compare favorably to the SESAME EoS table and previous data. The Grüneisen parameter at extreme conditions was also calculated from sound velocity data. The data presented in our experiment also provide new information on sound velocity to support the dissociation and metallization for liquid quartz at extreme conditions.

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Evidence of shock-compressed stishovite above 300 GPa

Schoelmerich

Tschentscher

Bhat

et al. 2020

Sci Rep

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Sio 2 is one of the most fundamental constituents in planetary bodies, being an essential building block of major mineral phases in the crust and mantle of terrestrial planets (1-10 M E). Silica at depths greater than 300 km may be present in the form of the rutile-type, high pressure polymorph stishovite (P4 2 /mnm) and its thermodynamic stability is of great interest for understanding the seismic and dynamic structure of planetary interiors. previous studies on stishovite via static and dynamic (shock) compression techniques are contradictory and the observed differences in the lattice-level response is still not clearly understood. Here, laser-induced shock compression experiments at the LcLS-and SAcLA XfeL light-sources elucidate the high-pressure behavior of stishovite on the lattice-level under in situ conditions on the Hugoniot to pressures above 300 GPa. We find stishovite is still (meta-)stable at these conditions, and does not undergo any phase transitions. this contradicts static experiments showing structural transformations to the cacl 2 , α-pbo 2 and pyrite-type structures. However, rate-limited kinetic hindrance may explain our observations. these results are important to our understanding into the validity of eoS data from nanosecond experiments for geophysical applications. Stishovite, the high-pressure polymorph of silica, is of vast interest for planetary-and material science as a dominant constituent material in the mantle of Earth and larger terrestrial extra-solar planets. Under equilibrium conditions, stishovite becomes the stable form of SiO 2 at pressures above ~7 GPa and crystallizes in the rutile-type structure (P4 2 /mnm), consisting of octahedrally coordinated Si atoms 1-3. Static compression studies using diamond anvil cell (DAC) techniques show, that stishovite undergoes a displacive phase transition to the orthorhombic CaCl 2-type structure (Pnnm) at ~60 GPa 4-10 and a further transition to the α-PbO 2 type structure (Pbcn) at ~121 GPa 10-16. To date, the highest-pressure experimentally determined SiO 2 phase transformation is to the pyrite-type structure (Pa3) at around 268 GPa 17. Additionally, silica has been explored using dynamic shock compression experiments. Shock compression studies of fused silica and quartz up to 200 GPa indicate phase transitions to stishovite, post-stishovite phase(s) and melting above 120 GPa 18-23. However, only few studies use stishovite as a starting material. This is mainly due to the difficulty of synthesizing large specimens of stishovite without impurities or significant porosity, and preparing these samples for shock compression experiments. Stishovite has been shock compressed in the pressure regime between 193.6-235.7 GPa with the gas gun technique 24 , between 316-992 GPa with the flyer plate technique at the Z-machine 25 and in the pressure regime between 1032.2-2660.4 GPa with the decaying shock method at the OMEGA laser facility 26. All three studies resolve the stishovite continuum Hugoniot. In contrast to static experiments 5 , there is...

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Sound Velocities in Shock‐Synthesized Stishovite to 72 GPa

Cited by 7 publications

References 57 publications

Behavior of soda-lime silicate glass under laser-driven shock compression up to 315 GPa

Behavior of soda-lime silicate glass under laser-driven shock compression up to 315 GPa

Sound Velocity Measurement of Shock-Compressed Quartz at Extreme Conditions

Evidence of shock-compressed stishovite above 300 GPa

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