| 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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document
Direct structural investigation of shock compressed silicates from x-ray diffraction
Abstract
High pressure silicates phase transition and dissociation reactions are necessary in the interpretation of the seismic profile of the Earth's mantle. On the other hand, knowledge of the physical properties of the silicate melts is essential to understand differentiation at early stage of the planet, the magma ocean dynamics, lunar formation and also mantle melting. Studying liquid properties with usual static techniques, though, is limited due to difficulties to confine melts in the diamond cell. Experimental data on silicate liquids are therefore still very limited and measurements of their structure are nonexistent beyond few tens of GPa. Silicate glasses have long been studied as experimentally accessible analogs, but this correspondence has never been validated. Here we present the first in situ structural measurements of shock compressed MgSiO3 glass and Mg2SiO4 crystalline forsterite samples using x-ray diffraction. The experiment was performed at the Matter at Extreme Conditions (MEC) endstation of the Linac Coherent Light Source of SLAC National Accelerator Laboratory. At MEC, combining high energy optical lasers and bright x-ray beams from electron lasers allows for x-ray diffraction to directly access the structure of high pressure-temperature shock compressed samples. We will show the data obtained on the behaviour of silicates between few GPa and above 100 GPa. In this range of pressures, the MgSiO3 glass Hugoniot crosses the solid-liquid boundary, allowing the investigation of structural changes in both compressed solid and liquid samples. This will bring new important highlights on the comparison between the two systems. In particular, we will discuss the increase in the coordination number with pressure in silicates melts. We will also present intriguing results on amorphous properties of MgSiO3 glass and Mg2SiO4 crystalline samples under shock compression....