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Liquid Structure of Tantalum under Internal Negative Pressure

Abstract : In situ femtosecond x-ray diffraction measurements and ab initio molecular dynamics simulations were performed to study the liquid structure of tantalum shock released from several hundred gigapascals (GPa) on the nanosecond timescale. The results show that the internal negative pressure applied to the liquid tantalum reached −5.6 ð0.8Þ GPa, suggesting the existence of a liquid-gas mixing state due to cavitation. This is the first direct evidence to prove the classical nucleation theory which predicts that liquids with high surface tension can support GPa regime tensile stress.
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https://hal.archives-ouvertes.fr/hal-03424959
Contributor : Michel Koenig Connect in order to contact the contributor
Submitted on : Wednesday, November 10, 2021 - 4:36:01 PM
Last modification on : Tuesday, January 4, 2022 - 6:22:48 AM
Long-term archiving on: : Friday, February 11, 2022 - 7:26:50 PM

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K. Katagiri, N. Ozaki, S. Ohmura, Bruno Albertazzi, Y. Hironaka, et al.. Liquid Structure of Tantalum under Internal Negative Pressure. Physical Review Letters, American Physical Society, 2021, 126 (1), pp.012027. ⟨10.1103/physrevlett.126.175503⟩. ⟨hal-03424959⟩

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