光学学报, 2017, 37 (10): 1029001, 网络出版: 2018-09-07   

基于环形样品池的激光粒度测量方法 下载: 810次

Laser Particle Size Measurement Based on Annular Sample Cell
潘林超 1,2葛宝臻 1,2张福根 1,3,*
作者单位
1 天津大学精密仪器与光电子工程学院, 天津 300072
2 光电信息技术教育部重点实验室, 天津 300072
3 珠海真理光学仪器有限公司, 广东 珠海 519085
摘要
为了扩展散射角的接收范围,提高激光粒度仪对亚微米颗粒的测量精度和分辨率,提出了一种结构简单的环形样品池方法。该方法理论上能够连续无缝地接收0°~180°的散射光,且具有测量下限低的优势。基于环形样品池测量方法,搭建了新型激光粒度测量装置,并对50,100,200,400 nm的标准粒子样品以及由它们组合而成的混合样品进行了测量实验,并与传统样品池的测量结果进行了比较。结果表明,环形样品池方法能够准确分辨体积中位径比值为1∶2的标准粒子混合样品。对于亚微米颗粒,环形样品池方法具有测量下限低、测量精度高、分辨率高和可靠性高的特点。
Abstract
In order to extend the receiving range of scattering angles and improve the measurement accuracy and resolution of submicron particles by laser particle size analyzers, a simple-structure method based on an annular sample cell is proposed. In theory, it can receive the scattering light of 0°~180° continuously and seamlessly and possesses the advantage of low measurement limit. Based on the measurement method with annular sample cells, a new-type measurement device of laser particle sizes is constructed and the standard particles of 50, 100, 200, 400 nm and their mixtures are measured, whose results are compared with those of the traditional sample cells. The results show that the method based on the annular sample cells can distinguish the mixed standard particles with a median volume diameter ratio of 1∶2. This scheme has signatures of low measurement limit, high measurement accuracy, high resolution and high reliability for submicron particles.

潘林超, 葛宝臻, 张福根. 基于环形样品池的激光粒度测量方法[J]. 光学学报, 2017, 37(10): 1029001. Linchao Pan, Baozhen Ge, Fugen Zhang. Laser Particle Size Measurement Based on Annular Sample Cell[J]. Acta Optica Sinica, 2017, 37(10): 1029001.

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