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DOI: 10.1615/RAD-16.370
pages 302-309

Fengshan Liu
National Research Council, Combustion Technology Group, Institute for Chemical Process & Environmental Technology, National Research Council Building M-9, 1200 Montreal Road, Ottawa, Ontario, Canada K1 A 0R6

David R. Snelling
Measurement Science for Emerging Technologies, National Research Council of Canada 1200 Montreal Road, Ottawa, ON, K1A 0R6, Canada

Kevin A. Thomson
Measurement Science and Standards, National Research Council, Ottawa, Ontario, Canada

Gregory J. Smallwood
National Research Council Canada, ICPET, Combustion Research Group, Ottawa, Ontario, Canada


The recently developed cavity attenuated phase shift particulate matter single scattering albedo monitor has been shown to be accurate and robust for real-time aerosol optical properties and black carbon mass concentration measurements. The scattering component of the measurement suffers the truncation error due to the loss of scattered light in the forward and backward directions. This study calculates the scattering loss in this instrument by solving the radiative transfer equation in the axisymmetric enclosure using the discrete-ordinate method. The present model predicted larger scattering loss than the simplified theoretical estimate in the literature. The effects of scattering coefficient, asymmetry parameter, sampling tube surface reflection coefficient were also investigated.

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