Dispersion of corona ions downwind from a high-voltage power line
Ling, Xuan, Jayaratne, Rohan, & Morawska, Lidia (2009) Dispersion of corona ions downwind from a high-voltage power line. In European Aerosol Conference, 6-11 September 2009, Karlsruhe, Germany. (Unpublished)
Corona discharge is responsible for the small ions found near overhead power lines, and these are capable of modifying the ambient electrical environment such as the dc electric field at ground level (Fews, Wilding et al. 2002). Once produced, small ions quickly attach to aerosol particles in the air, producing ‘large ions’ which are roughly 1 nm to 1 µm in diameter. However, very few studies have reported measurements of ions produced by power lines and its impact on particle charge concentrations. In this present study, the measurements were conducted as a function of normal downwind distance from a 275kV power line for investigating the effect of corona ions on air ions, aerosol particle charge concentration and dc e-filed.
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