| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Vinci, Tommaso
École Polytechnique
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2024Shock-driven amorphization and melt in Fe$_2$O$_3$
- 2023Transonic dislocation propagation in diamond.citations
- 2023Zr-based metallic glasses Hugoniot under laser shock compression and spall strength evolution with the strain rate >10$^7$ s$^{-1}$)citations
- 2023Zr-based metallic glasses Hugoniot under laser shock compression and spall strength evolution with the strain rate (> 107 s-1)citations
- 2023Transonic dislocation propagation in diamondcitations
- 2022Zr-based bulk metallic glasses equation of state under laser shock compression and spall strength
- 2022Zr-based bulk metallic glasses equation of state under laser shock compression and spall strengths.
- 2021Spin State of Iron in Dynamically Compressed Olivine Melt
- 2021Metallization of Shock-Compressed Liquid Ammoniacitations
- 2021X-ray powder diffraction in reflection geometry on multi-beam kJ-type laser facilitiescitations
- 2020Equation of state and electrical conductivity of warm dense ammonia at the conditions of large icy planets' interiors.
- 2020In situ X-ray diffraction of silicate liquids and glasses under dynamic and static compression to megabar pressurescitations
- 2020Direct Observation of Shock‐Induced Disordering of Enstatite Below the Melting Temperaturecitations
- 2020Ultrafast X-ray Diffraction Measurements Of shock-Compressed Fe and Fe-Si Alloys
- 2017Shock response to solid germanium
- 2016Direct structural investigation of shock compressed silicates from x-ray diffraction
- 2016Kinetics of the iron α -∊ phase transition at high-strain rates: Experiment and modelcitations
- 2014Melting of iron close to Earth's inner core boundary conditions detected by XANES spectroscopy in laser shock experiment
- 2010Large scale simulations of quasi-isentropic compression in Fe and Al
- 2009Microstructural investigation of melting in laser-shocked recovered iron foils
- 2006Laser-driven shock waves for the study of extreme matter statescitations
Places of action
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article
In situ X-ray diffraction of silicate liquids and glasses under dynamic and static compression to megabar pressures
Abstract
Properties of liquid silicates under high pressure and high temperature conditions are critical for modeling the dynamics and solidification mechanisms of the magma ocean in the early Earth, as well as for constraining entrainment of melts in the mantle and in the present-day core-mantle boundary. Here, we present in situ structural measurements by X-ray diffraction of selected amorphous silicates compressed statically in diamond anvil cells (up to 157 GPa at room temperature) or dynamically by laser-generated shock compression (up to 130 GPa and 6000 K along the MgSiO3 glass Hugoniot). The X-ray diffraction patterns of silicate glasses and liquids reveal similar characteristics over a wide pressure and temperature range. Beyond the increase in Si coordination observed at 20 GPa, we find no evidence for major structural changes occurring in the silicate melts studied up to pressures and temperatures exceeding Earth's core mantle boundary conditions. This result is supported by molecular dynamics calculations. Our findings reinforce the widely-used assumption that the silicate glasses studies are appropriate structural analogs for understanding the atomic arrangement of silicate liquids at these high pressures.