光学学报, 2018, 38 (3): 0329001, 网络出版: 2018-03-20
水中悬浮颗粒的三维体散射函数测量
Measurement of Three-Dimensional Volume Scattering Function of Suspended Particles in Water
摘要
提出了一种水中悬浮颗粒的三维体散射函数测量方法, 采用抛物面镜结合传感器探测方式, 同时获取了半球空间内多个散射面所对应的体散射函数。搭建了三维体散射函数测量装置, 采用粒径为57~954 nm的标准聚苯乙烯颗粒作为样本, 获得了方位角0°~180°对应的多个散射面内的水中颗粒体散射函数, 测量的散射角范围为18°~160°。实验结果与计算结果吻合, 验证了利用该装置对水体中粒径小于1 μm的悬浮颗粒的体散射函数进行测量的可行性。
Abstract
An approach for measuring three-dimensional (3D) volume scattering function (VSF) of suspended particles in water is proposed, in which one can simultaneously obtain the VSFs of several scattering planes in the hemisphere space by using the detection method of parabolic mirrors combining with sensors. The 3D VSF measuring device is constructed. With the standard polystyrene particles with diameters of 57-954 nm as samples, the VSFs of the suspended particles in water are obtained, which are in multiple scattering planes corresponding to azimuthal angles of 0°-180°. The detectable scattering angle is in the range of 18°-160°. The experimental results agree with the simulated ones, which verifies the feasibility to detect the VSFs of suspended particles with diameter less than 1 μm in water by this device.
王万研, 杨克成, 罗曼, 郭文平, 夏珉, 李微. 水中悬浮颗粒的三维体散射函数测量[J]. 光学学报, 2018, 38(3): 0329001. Wang Wanyan, Yang Kecheng, Luo Man, Guo Wenping, Xia Min, Li Wei. Measurement of Three-Dimensional Volume Scattering Function of Suspended Particles in Water[J]. Acta Optica Sinica, 2018, 38(3): 0329001.