Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA.
J Chem Phys. 2011 May 7;134(17):174501. doi: 10.1063/1.3574009.
Vibrational spectroscopy of the intramolecular stretching mode (vibron) of the hydrogen isotopes has been used for the past 20 years in different laboratories using various techniques to probe phase diagrams of this system under extreme conditions. Available vibrational spectroscopy data in hydrogen and deuterium to 200 GPa at 10-300 K are analyzed and reassessed to identify the existence of an additional molecular phase (I') to phases I, II, and III previously identified at megabar pressures. The results do not support the existence of phase I' in the pressure-temperature range studied. Previously proposed boundaries between phases I, II, and III are re-examined and updated phase diagrams of hydrogen and deuterium are proposed.
过去 20 年来，不同实验室采用各种技术，利用氢同位素分子伸缩模式（振动子）的振动光谱，在极端条件下探测该体系的相图。对 10-300 K 下氢和氘在 200 GPa 内的现有振动光谱数据进行了分析和重新评估，以确定在先前确定的兆巴压力下的 I、II 和 III 相之外是否存在额外的分子相（I'）。结果不支持在所研究的压力-温度范围内存在 I'相。重新检查了先前提出的 I、II 和 III 相之间的边界，并提出了氢和氘的更新相图。
