Synchrotron Light Life Science Center, Department of Photonics, FAculty of Science and Engineering, Ritsumeikan University, Noji-higashi 1-1-1, Kusatsu, Shiga 525-8577, Japan.
Spectrochim Acta A Mol Biomol Spectrosc. 2010 Dec;77(5):1048-53. doi: 10.1016/j.saa.2010.08.071. Epub 2010 Sep 24.
Far infrared absorption measurements for distilled water and ice Ih were performed in the frequency range from 20 cm(-1) to 1000 cm(-1) with Fourier Transform Infrared Spectrometer (FTIR) utilizing SR of a portable synchrotron. Four vibrational bands were separated from measured spectra in liquid water. We found that a peak frequency of 40±1 cm(-1) did not depend on the temperature in a range between 10.0°C and 70.0°C; however, any low energy excitation modes were not observed in the ice spectrum. It is concluded that this band is caused by collective vibrations specific to the dynamical structure in liquid water.
利用便携式同步辐射源的 SR，在 20cm(-1) 至 1000cm(-1) 的频率范围内，对蒸馏水和冰 Ih 进行了远红外吸收测量。从液态水中的测量光谱中分离出四个振动带。我们发现，在 10.0°C 至 70.0°C 的温度范围内，40±1cm(-1) 的峰值频率不依赖于温度；然而，在冰的光谱中没有观察到任何低能量激发模式。结论是，该带是由液态水中动态结构特有的集体振动引起的。
