High pressure-temperature Brillouin study of liquid water: evidence of the structural transition from low-density water to high-density water.
High pressure-temperature Brillouin study of liquid water: evidence of the structural transition from low-density water to high-density water.
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DOI：
10.1063/1.2102888
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发表时间：
2005-11
期刊：
影响因子：
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通讯作者：
Fangfei Li;Q. Cui;Zhi He;T. Cui;Jian Zhang;Qiang Zhou;G. Zou;S. Sasaki
中科院分区：
文献类型：
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作者：
Fangfei Li;Q. Cui;Zhi He;T. Cui;Jian Zhang;Qiang Zhou;G. Zou;S. Sasaki
首次通过布里渊散射在高达453 K的温度和高达凝固点的压力下研究了水从低密度（LDW）到高密度（HDW）状态发生的结构转变。在环境温度（293 K）的声速的压力响应的不连续性进行了观察。此外，有明显的中断的线性行为的log 10 C11对log 10（rho/rho 0）时，压力增加到0.29，0.21，和0.19 GPa的温度为293，316，和353 K，分别。这表明了从LDW到HDW的结构转变，LDW和HDW之间可能的转变边界与分子动力学模拟结果吻合得很好。
The structural transformations occurring to water from low-density (LDW) to high-density (HDW) regimes have been studied by Brillouin scattering for the first time at temperatures up to 453 K and at pressures up to the solidification point. At ambient temperature (293 K) a discontinuity in pressure response of the sound velocity is observed. Furthermore, there are evident breaks in the linear behavior of log10 C11 versus log10(rho/rho0) when pressure increases up to 0.29, 0.21, and 0.19 GPa at the temperature of 293, 316, and 353 K, respectively. It is supposed to indicate the structural transition from LDW to HDW, and the possible transition boundary between LDW and HDW is in good agreement with the molecular-dynamics simulation.