| 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
Transonic dislocation propagation in diamond
Abstract
The motion of line defects (dislocations) has been studied for over 60 years but the maximum speed at which they can move is unresolved. Recent models and atomistic simulations predict the existence of a limiting velocity of dislocation motions between the transonic and subsonic ranges at which the self-energy of dislocation diverges, though they do not deny the possibility of the transonic dislocations. We use femtosecond x-ray radiography to track ultrafast dislocation motion in shock-compressed single-crystal diamond. By visualizing stacking faults extending faster than the slowest sound wave speed of diamond, we show the evidence of partial dislocations at their leading edge moving transonically. Understanding the upper limit of dislocation mobility in crystals is essential to accurately model, predict, and control the mechanical properties of materials under extreme conditions.