Abstract

This paper is Part 2 of a two-part sequence describing an in situ particle sizing counter. Part 2 discusses experimental measurements in both ambient and combustion temperature conditions. Ambient temperature measurements are obtained using a well-characterized mixture of monodispersions of known size and concentration. The amplitude data are unfolded by the technique described in Part 1, and number density vs particle diameter results are compared with the known input mixture of four monodispersions. An analysis of error propagation in the inversion scheme is presented. For combustion conditions, known mixtures of silica beads in the 1–30-μm range are injected into a small burner, and measurements by the particle counter are shown to reproduce satisfactorily the input size distribution of the glass bead polydispersion. The paper concludes with an assessment of potential applications of the counter to high number density, absorbing, and irregular aerosols.

© 1979 Optical Society of America

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