Supercritical water

Direct observation of supercritical fluid water using Bassett-type hydrothermal diamond anvil cell. Temperature (red numbers shown above right) was increased under the constant volume. Pressure, therefore, increased with increasing temperature. Liquid water and vapor became supercritical fluid at around 373 degC and 22 MPa (~critical point of pure H2O). Playback speed x5 faster.　 バセット型外熱式ダイヤモンドアンビルセル装置を用いた，超臨界水の直接観察実験です．１対のダイヤモンド製の観察窓と貴金属ガスケットに囲まれたサンプル室に液体の水と水蒸気（気泡）を入れ，体積一定のもとで加熱します．そうすると，加熱にともない圧力も上昇します．右上