Analysis of extinction characteristics of non-spherical biological particle aggregates [Invited]

In this study, a method was presented to accurately obtain the extinction characteristics of non-spherical biological particle aggregates. Based on multi-sphere model particles, randomly oriented aggregation firstly built construct The discrete-dipole approximation used calculate aggregates in 3–14 µm waveband. average mass coefficients three materials are 0.802 m2/g, 0.907 and 0.866 m2/g 3–5 waveband 0.590 0.402 0.523 8–14 band, respectively. Smoke chamber experimental results good agreement with theoretical analyses.