Particle Sizing by Photon Correlation Spectroscopy. Part II: Average values
Particle Sizing by Photon Correlation Spectroscopy. Part II: Average values
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通过光子相关光谱法进行粒度测定。
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
N. D. Jaeger
中科院分区：
文献类型：
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作者：
R. Finsy;N. D. Jaeger
回顾了用光子相关光谱法获得的非相互作用均匀球形颗粒的直径平均值和扩散系数。一般来说，根据第一累积量计算的平均扩散系数可以被识别为强度平均值，而平均粒径是谐波强度平均值。对于线性尺寸小于光波长的颗粒，强度平均值可被识别为扩散系数的 z 平均值和直径的调和 z 平均值。然而，对于较大颗粒，强度平均值与 z 平均值不同，并且取决于所检查的材料（相对折射率）和所使用的实验设备（激光波长以及偏振状态和散射角）。
The average values of the diameters and the diffusion coefficients of non-interacting homogeneous spherical particles as obtained with photon correlation spectroscopy are reviewed. In general, the average diffusion coefficients calculated from the first cumulant can be identified as intensity averages, while the average particle diameters are harmonic intensity averages. For particles with linear dimensions that are small compared to the wavelength of light, the intensity averages can be identified as z-averages for the diffusion coefficient and as harmonic z-averages for the diameter. For larger particles the intensity averages are, however, different from the z-averages and are dependent on the material examined (relative refractive index) and on the experimental equipment used (laser wavelength and state of polarization and scattering angle).