Liquid Structure of Tantalum under Internal Negative Pressure
Liquid Structure of Tantalum under Internal Negative Pressure
复制标题
内部负压下钽的液态结构
DOI：
10.1103/physrevlett.126.175503
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发表时间：
2021
影响因子：
8.6
通讯作者：
and R. K
中科院分区：
文献类型：
--
作者：
K. Katagiri;N. Ozaki;S. Ohmura;B. Albertazzi;Y. Hironaka;Y. Inubushi;K. Ishida;M. Koenig;K. Miyanishi;H. Nakamura;M. Nishikino;T. Okuchi;T. Sato;Y. Seto;K.Shigemori;K. Sueda;Y. Tange;T. Togashi;Y. Umeda;M. Yabashi;T. Yabuuchi;and R. K
利用飞秒X射线衍射测量和从头算分子动力学模拟研究了纳秒量级上几百GPa钽冲击波的液态结构。结果表明，施加到液体钽的内部负压达到，表明存在由于空化的液气混合状态。这是第一个直接的证据来证明经典的成核理论预测，具有高表面张力的液体可以支持GPa制度的张应力。
In situfemtosecond x-ray diffraction measurements andab initiomolecular 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, 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.