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Journal of Advances in Applied Physics
JAAP > Volume 1, Number 1, November 2019

A New Instrument for Determining Charge to Diameter Distributions of Charged Particles

Download PDF  (5010.7 KB)PP. 35-42,  Pub. Date:November 29, 2019
DOI: 10.22606/jaap.2019.11003

Author(s)
James H. Anderson
Affiliation(s)
SUNY Empire State College, Genesee Valley Learning Center, 680 Westfall Rd.. Rochester, NY 14620, USA
Abstract
A new instrument for measuring the charge-to-diameter ratio of small particles (2-100 μm) is described. In this instrument, the terminal velocity of charged particles in an electric field in air is determined by measuring the time of flight of the particles between two laser beams. The main advantages of this instrument are that it is easy to operate, and only about 15 min. are required to obtain a distribution of charge-to-diameter ratio for a few thousand particles. The major disadvantage is that low charged and uncharged particles cannot be detected.
Keywords
Particle charge, charge distribution, q/d distribution, triboelectricty, tribocharging, elecrophotographic toners.
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