液体非线性声参量与分子结构的关系研究

Relationship Between Acoustic Nonlinear Parameter(B/A) and Molecular Structure Parameter in Organic Liquids

为了寻求简单液体的非线性声参量与分子微观量的关系,基于Flory液体理论,推导出有机液体的非线性声参量与表征分子结构参量的关系式,并通过理论值与试验值的比较,验证了该关系的可靠性.结果表明,液体的非线性声参量决定于分子的结构,从而表达了分子级的信息.

To define the relationship between nonlinear parameter （B/A） and microstructure in liquid, a new formula of the relationship between acoustic nonlinear parameter and molecular structure parameter in organic liquids is derived. The formula is verified on the basis of Flory theory of liquid. The calculating result of the B/A is in good agreement with experiment. The result indicates that the acoustic nonlinear parameter of liquids conveys some information about structure of molecular.