Mishima O
National Institute for Research in Inorganic Materials (NIRIM), 1-1 Namiki, Tsukuba, 305-0044, Japan and Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Corporation (JST), Kawaguchi, Saitama, 332-001.
Phys Rev Lett. 2000 Jul 10;85(2):334-6. doi: 10.1103/PhysRevLett.85.334.
According to the liquid-liquid critical-point hypothesis about water, two liquid waters exist at low temperatures and are supposed to be merged at a critical point. The low-temperature metastable melting curves of D2O ices have been measured. It is found that the melting curve of D2O ice III is smoothly curved around 25 MPa and 238 K, whereas the melting curve of D2O ice IV undergoes an abrupt change of slope at 100 MPa and 220 K. This is consistent with the existence of a liquid-liquid critical point in the region between the melting curve of D2O ice III and the melting curve of D2O ice IV.
根据关于水的液-液临界点假说，在低温下存在两种液态水，并且它们应该在一个临界点处合并。已经测量了D2O冰的低温亚稳熔化曲线。发现D2O冰III的熔化曲线在约25MPa和238K处呈平滑曲线，而D2O冰IV的熔化曲线在100MPa和220K处斜率发生突变。这与在D2O冰III的熔化曲线和D2O冰IV的熔化曲线之间的区域中存在液-液临界点是一致的。
