Abstract
Particle nebulizer systems disperse particles that often have a high electrostatic charge. This paper presents the construction details for an inexpensive electrostatic charge neutralizer utilizing a 2-mCi polonium 210 source. The electrostatic charge neutralizer consists of 20 polonium 210 sources positioned longitudinally along the inside wall of a section of aluminum conduit. Each end of the conduit is fitted with an aluminum plug with a 0.95 cm copper tubing connector. The characteristic time of neutralization for this charge neutralizer is approximately 0.005 S. The charge neutralizer was tested to determine if it effectively reduced the electrostatic charge on the dispersed microspheres. The system was quite effective in reducing the electrostatic charge on 1 ..mu..m diameter polystyrene latex microsphere. The activity of polonium 210 decreases rapidly due to its short half-life. The charge neutralizer may be periodically recharged by simply adding a few hundred ..mu..ci of fresh polonium 210. 6 references, 2 figures.
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