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50,100,200,400nm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。
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 nmand 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.
作者
潘林超
葛宝臻
张福根
Pan Linchao;Ge Baozhen;Zhang Fugen(School of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China;Key Laboratory of Opto-Electronics Information Technology, Ministry of Education, Tianjin 300072, China;Zhuhai Linkoptik Instruments Co., Ltd., Zhuhai, Guangdong 519085, China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2017年第10期303-311,共9页
Acta Optica Sinica
基金
国家自然科学基金(61275012)
关键词
散射
环形样品池
激光粒度仪
亚微米颗粒
scattering
annular sample cell
laser particle size analyzer
submicron particles
