Journal of Atmospheric and Environmental Optics, Volume. 12, Issue 5, 349(2017)
Measurement of Refractive Index of Aerosol Particles Using Aerosol Time-of-Flight Mass Spectrometer
Aerosol time-of-flight mass spectrometer (ATOFMS) is used to measure the refractive index of aerosol particles. First of all, diameter and light scattering intensity of aerosol particles are measured through the self-developed ATOFMS. Then the function relation of theoretical luminous flux accepted by photo multiplier tube (PMT) with aerosol particles size and the refractive index is deduced through the Mie scattering theory combined with the ATOFMS geometric model of light scattering experiment. The refractive index is retrieved by comparing the experimental aerosol particles average light scattering intensity with Mie scattering theory. The result shows that the method is reasonable compared with the actual sample data parameters.
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RONG Hua, GU Xuejun, WEN Zuoying, ZHU Yupeng, TANG Xiaofeng, ZHAO Weixiong, ZHANG Weijun. Measurement of Refractive Index of Aerosol Particles Using Aerosol Time-of-Flight Mass Spectrometer[J]. Journal of Atmospheric and Environmental Optics, 2017, 12(5): 349
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Received: May. 4, 2016
Accepted: --
Published Online: Oct. 17, 2017
The Author Email: Weijun ZHANG (wjzhang@aiofm.ac.cn)