Hydrogen bond network of supercooled water and amorphous ice studied by the electronic structure

用软x射线发射光谱法测定了低温液态水的电子结构。在冰期也出现了与氢键断裂相对应的肩峰，这可能是由核诱导动力学引起的。低温乙腈-水混合物的电子结构随着微观非均质性的增加变化不大，这说明软x射线发射的密度波动和测量区域的大小存在差异。

Electronic structure of low temperature liquid water was measured by soft X-ray emission spectroscopy. A shoulder peak that corresponds to breaking of hydrogen bond appeared even in the ice phase, which is probably originated from core-induced dynamics. Electronic structure of low temperature acetonitrile-water mixture exhibited little change with increase of microheterogeneity at low temperature, which implies difference in the size of density fluctuation and measurement region of soft X-ray emission.