Radioactive Aerosols in the Environment
نویسنده
چکیده
Radioactive aerosols differ physically from non-radioactive aerosols by the appreciable charge that they may carry. This arises from a competition between the charge generated by the radioactive decays occurring within each aerosol and the subsequent diffusion of the ions formed back onto the particle. At high levels of activity, the particles may self-discharge, at low and intermediate activity levels, however, appreciable charging may occur. In the atmosphere, charged particles are removed preferentially over neutral particles by water droplets. At the surface, deposition rates of charged particles are greater than those of neutral particles, depending on their radi
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