Experimental validation of non-sphericity effect on monochromatic rainbow measurement

摘要：

　　Monochromatic rainbow measurement,as a laser based interference detecting technique,is always used to measure particle refractive index.However,the accuracy of this method is effected by particle non-sphericity.In this paper,the non-sphericity effect is analyzed from both simulation and experiment.The non-sphericity effect for both prolate and oblate spheroid is studied.The simulation result shows that the axial ratio greatly effects the rainbow angle position,and eventually effect the refractive index evaluation.An experiment is also taken.The refractive indexes of ethanol solutions with different concentration are measured by monochromatic rainbow method.A comparison is taken between the results measured from the rainbows formed by a liquid cylinder and rainbows of free falling droplets.

关键词： rainbow non-sphericity refractive index measurement free falling droplet

作者: Qi Pan Zijia Zhang

作者单位: Nanjing University of information science & technology, Nanjing, China 210044

会议类型: 国际会议

会议名称: 2012第八届精密工程测量和仪器仪表国际研讨会(ISPEMI2012)

会议地点: 成都

会议语种:英文

页码: 1-8

在线出版日期: 2012-08-08（万方平台首次上网日期，不代表论文的发表时间）