Measurement of triboelectric charging of moving micro particles by means of an inductive cylindrical probe

Journal
Journal of Physics D Applied Physics  
Volume
40
Issue
19
Article Number
053
Citation
Journal of Physics D Applied Physics 40 (19): 053 (2007)
Publisher DOI
10.1088/0022-3727/40/19/053
Scopus ID
2-s2.0-34748855106
ISSN
00223727
We present a method based on induced currents in a cylindrical probe which allows analysis of the micro-particle charging processes in an aerosol. The micro particles were triboelectrically charged by passing through a dielectric tube coaxially mounted into the probe. The cylindrical probe enabled the quantification of particle charging without prior calibration of the probe. An analytic model was developed for the description of the measured induced currents and implemented into a computer simulation program. The combination of model simulations and an appropriate experimental setup revealed comprehensive data for the determination of the particles' electric charge against time of flight through the tube. In methodological proof of principle experiments, the formations of particle clouds with charges of different signs were observed using magnetite micro particles. © 2007 IOP Publishing Ltd.
DDC Class
600: Technology