光子学报, 2009, 38 (1): 179, 网络出版: 2010-05-10
高浓度超细颗粒的后向光子相关光谱测量技术研究
Back Scattering PCS for Particle Sizing in High Concentrated Suspension
高浓度超细颗粒 颗粒测量 光子相关光谱 后向散射 High concentrated particle Particle sizing Photon correlation spectroscopy Back scattering
摘要
针对光子相关光谱颗粒粒径测量法不能在线测量高浓度超细颗粒的问题,通过分析溶液浓度对光子相关光谱测量法的影响,设计了一种后向散射光路,提出了后向光子相关光谱测量法.实验采用50 nm、100 nm以及500 nm三种标准乳胶球颗粒,在不同的浓度下分别用两种方法进行了测试.结果证明,后向光子相关光谱测量法能有效抑制多重散射的影响,适用于高浓度超细颗粒粒径的在线测量.
Abstract
To solve the difficulty of PCS(Photon Correlation Spectroscopy) for online particle sizing in high concentrated suspension,a new back scattering optic was designed and the back-scattering PCS method was proposed through analyzing the influence of the concentration on the PCS.The PCS and BSPCS were systematically tested using small polystyrene latex particles with a wide range of particle concentrations as well as 50nm,100nm and 500nm diameters in suspension.The results show that the multiple-scattering can be suppressed with back scattering PCS and this method suitable to online particle sizing in high concentrated suspension.
杨晖, 郑刚, 李孟超, 孔平. 高浓度超细颗粒的后向光子相关光谱测量技术研究[J]. 光子学报, 2009, 38(1): 179. YANG Hui, ZHENG Gang, LI Meng-chao, KONG Ping. Back Scattering PCS for Particle Sizing in High Concentrated Suspension[J]. ACTA PHOTONICA SINICA, 2009, 38(1): 179.
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