本文描述了CDCI_3介质中的激光感生荧光中的共振光声效应(简称荧光声共振效应)。指出这种荧光声共振效应与通常的光声效应的区别。给出了利用荧光声共振效应确定介质中的声速、第二维里系数、声吸收系数、分子内模弛豫时间、粘滞系数和热导率的理论公式,以CdCl3为例,给出了上述各参数的具体数值。

The resonant photoacoustic effect in laser induced fluorescence (abbreviated as fluorescence acoustic resonance effect) of CDC13 is described. The difference of this effect from general photoacoustio effect is pointed out. The theoratioal formulae of physical parameters, such as the sound velocity, the second virial coefficient, the sound absorption coefficient. The relaxation times of molecule inner modes, the viscosity coefficient, and the thermal conductivity coefficient, which could be determined using the fluorescence acoustic resonance effect are given. As an example the specific values of the above mentioned physical parameters for CdCl3 are shown.