A Numerical Characterization of Particle Beam Collimation by an Aerodynamic Lens-Nozzle System: Part I. An Individual Lens or Nozzle

By Xuefeng Zhang, Kenneth A. Smith, D. Worsnop, J. Jimenez, J. Jayne, C. Kolb. 2002

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From Agglomerates of Spheres to Irregularly Shaped Particles: Determination of Dynamic Shape Factors from Measurements of Mobility and Vacuum Aerodynamic Diameters (2006, background): “Note also that the Reynolds number in the aerodynamic lens is smaller than ∼0.03 (Zhang et al. 2002).”
Transmission Efficiency of an Aerodynamic Focusing Lens System: Comparison of Model Calculations and Laboratory Measurements for the Aerodyne Aerosol Mass Spectrometer (2007, methodology): “In our previous studies (Zhang et al. 2002, 2004), we have taken into account the effects of Brownian motion in the flight chamber on the transmission efficiency, but have not considered Brownian motion within the aerodynamic lens.”
Characterization of an Aerodyne Aerosol Mass Spectrometer (AMS): Intercomparison with Other Aerosol Instruments (2005, background): “A narrow particle beam is generated by an aerodynamic lens that consists of a series of apertures embedded in a 1/2-inch outer diameter (1 cm inner diameter) stainless steel tube ( Liu et al. 1995 ; Zhang et al.”
Design, Modeling, Optimization, and Experimental Tests of a Particle Beam Width Probe for the Aerodyne Aerosol Mass Spectrometer (2005, methodology): “Submicron aerosols entering the AMS are focused into a narrow beam via an aerodynamic lens (Zhang et al. 2002, 2004c), and reach a terminal velocity that is a function of their vacuum aerodynamic diameter, dva (DeCarlo et al. 2004; Jimenez et al. 2003a).”