研究・研究者
研究会・セミナー
| 演 題 | 「The Mystery of Water; X-rays Provide Unique Insights」 |
|---|---|
| 日 時 | 2015年11月06日(金) 16:00 |
| 講演者 | Prof. Anders Nilsson （Department of Physics, Stockholm University） |
| 場 所 | 岡崎コンファレンスセンター 小会議室 |
| 概 要 | The anomalous physical properties of water are responsible for sustaining much of life on earth; for example, water displays a higher heat capacity than common liquids and expands upon freezing. Some of these anomalous physical properties become dramatically enhanced upon supercooling below the freezing point. I will present recent x-ray spectroscopy and scattering measurements, using both synchrotron radiation at SSRL, SPring-8 and the x-ray laser at LCLS, at temperatures from deep supercooling to boiling. The results shows that the liquid can be described as fluctuations between two types of local hydrogen bonded structures driven by incommensurate requirements for minimizing enthalpy and maximizing entropy. The connection of these results to low and high density water, the waters anomalies and the potential liquid-liquid transition and 2nd critical point model will be discussed. |
| その他 |
対応者：横山利彦 |
