Experiments investigating the normal impact of polydisperse microspheres wi
th surfaces have been carried out. The incident and rebound normal velocity
components and particle size were measured using the phase Doppler approac
h. Incident normal velocities were near those required for capture by the s
urface. The numerical simulation approach developed by Brach and Dunn (1995
, Aerosol Sci. Technol. 23, 51-71). was improved and applied to analyze the
polydisperse microsphere normal impact data. This improved approach was ju
stified through comparisons with the monodisperse microsphere normal impact
data of Wall et at. (1990, Aerosol Sci. Technol. 12, 926-946) and of Dahne
ke(1975, J. Colloid Interface Sci. 51, 58-65). (C) 1999 Elsevier Science Lt
d. All rights reserved.