摘要
布里渊散射实验发现,水分别与乙醇、丙酮及醋酸混合,混合溶液的声速随混合比的变化曲线存在一极大值;同时,达到极大值时的混合比随温度的改变而变化。本文借助水的“渗透模型”解释了上述异常现象。通过对水的喇曼峰的分解及其强度依混合比例的关系的分析,进一步印证了水的这一结构模型。
Binary solutions (water mixed with ethanol, acetone and acetic acid, respectively) were stu- died by Brillouin and Raman Scattering. The curve of sound velocity vs. mixture ratio of the binary solutions did not monotonously reduce, rather a maximumm were observed. The corre- sponding mixture ratio depended on the temperature. We explained these unusual phenomena by means of the 'percolation model' of liquid water, and further confirmation of this model was made by decomposing the Ramma peaks of the binary solutions and analysing the relation be- tween intensities of the component Ramma peaks and mixture ratio.
