Abstract
Size distribution measurements of polydisperse iron oxide chain aggregates (600–1300 Å thick with aspect ratios up to 700) were made and compared, using an aerosol centrifuge, a cascade impactor, and an electrical aerosol analyzer, with supporting data from electron microscopy. Number and volume frequency distributions are compared and analyzed on the basis of means and widths only. Appropriate conversions between aerodynamic and mobility equivalent diameters are made. Preferred particle orientation due to flow field and electrostatic field is taken into account. An estimate for the increase of average charge per fiber over that of spheres is given for the EAA's diffusion charger.
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