水至冰VII的压缩冷冻动力学。
Compression Freezing Kinetics of Water to Ice VII.
作者信息
Gleason A E, Bolme C A, Galtier E, Lee H J, Granados E, Dolan D H, Seagle C T, Ao T, Ali S, Lazicki A, Swift D, Celliers P, Mao W L
机构信息
Shock and Detonation Physics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 USA.
Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025 USA.
出版信息
Phys Rev Lett. 2017 Jul 14;119(2):025701. doi: 10.1103/PhysRevLett.119.025701. Epub 2017 Jul 11.
Time-resolved x-ray diffraction (XRD) of compressed liquid water shows transformation to ice VII in 6 nsec, revealing crystallization rather than amorphous solidification during compression freezing. Application of classical nucleation theory indicates heterogeneous nucleation and one-dimensional (e.g., needlelike) growth. These first XRD data demonstrate rapid growth kinetics of ice VII with implications for fundamental physics of diffusion-mediated crystallization and thermodynamic modeling of collision or impact events on ice-rich planetary bodies.
对压缩液态水进行的时间分辨X射线衍射（XRD）显示，其在6纳秒内转变为冰VII，这表明在压缩冻结过程中发生的是结晶而非非晶态固化。经典成核理论的应用表明存在异质成核和一维（如针状）生长。这些首批XRD数据证明了冰VII的快速生长动力学，这对扩散介导结晶的基础物理学以及富含冰的行星体上碰撞或撞击事件的热力学建模具有重要意义。
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