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Study of optical parameters of polystyrene spheres in dense aqueous suspensions

机译：浓水悬浮液中聚苯乙烯球的光学参数研究

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摘要

We investigated the dependence of the scattering and absorption coefficients of particles in dense suspensions by the low-coherence fiber optic dynamic light scattering (FODLS) technique. The estimated particle size was used to calculate the scattering coefficient of particles suspended in dense suspensions. The path-length resolved intensity distributions of light backscattered from absorbing dense suspensions were investigated experimentally. The absorption coefficient can be obtained by applying the measured path-length resolved intensity distributions to the modified Lambert-Beer law. As a result, the low-coherence FODLS technique can simultaneously measure the scattering and absorption coefficients of particles in absorbing dense suspensions, and the scattering and absorption coefficients are independent of each other in dense suspensions in the low-scattering regime of 2l_(d) < 10l_(*).
机译：我们通过低相干光纤动态光散射（FODLS）技术研究了稠密悬浮液中颗粒的散射和吸收系数的依赖性。估计的粒度用于计算悬浮在致密悬浮液中的颗粒的散射系数。实验研究了吸收密集悬浮液后向散射光的光程解析强度分布。吸收系数可以通过将测得的路径长度分辨强度分布应用于修正的Lambert-Beer定律来获得。结果，低相干FODLS技术可以同时测量吸收致密悬浮液中颗粒的散射系数和吸收系数，并且在2l_（d）的低散射状态下，致密悬浮液中的散射系数和吸收系数彼此独立。 <10l _（*）。

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