An Experiment Investigation on Electrification by Collision Between Chemically Identical Glass Particles

摘要

In this paper, the electrification of chemically identical spherical particles by collision is experimentally investigated in an ambient of Nitrogen gas. It is found that a particle carries net charges after collision with another particle, and the net charge is related to the diameter ratio and relative velocity between the two particles. The particle with larger diameter carries positive net charge after collision. A maximum net charge carried by the particle is found for a diameter ratio of 0.5-0.7 under a given relative velocity. The net charge increases then decreases with the increase of relative velocity under a given diameter ratio.