Fig. 4: The time evolution of the integrated XRD image of water freezing under a 0.8 GPa/ms compression rate.
From: Metastable water at several compression rates and its freezing kinetics into ice VII
Metastable water crystallizes first into ice VII as evidenced by the appearance of its (110) peak at 580 μs. ~200 μs later, diffraction peaks attributed to ice VI are observed. The horizontal red and green lines mark the apparition of the ice VII and ice VI respectively. Top: integrated diffraction pattern of the same sample held at the maximum pressure of 1.8 GPa taken after a few minutes. A mixture of ice VI and ice VII is still observed.
