Record Display for the EPA National Library Catalog
RECORD NUMBER: 384 OF 936Main Title | First Measurements of Aerosol Particle Charging by Free Electrons - A Preliminary Report. | |||||||||||
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Author | DuBard, J. L. ; McDonald, J. R. ; Sparks, L. E. ; | |||||||||||
CORP Author | Southern Research Inst., Birmingham, AL.;Industrial Environmental Research Lab., Research Triangle Park, NC. | |||||||||||
Year Published | 1983 | |||||||||||
Report Number | EPA-600/J-83-196; | |||||||||||
Stock Number | PB84-177534 | |||||||||||
Additional Subjects | Particles ; Aerosols ; Free electrons ; Charging ; Air pollution ; Fines ; Change measuring instruments ; Particle size ; Ions ; Charged particles ; Electric fields ; Reprints ; | |||||||||||
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Collation | 9p | |||||||||||
Abstract | The article describes the first-time isolation and measurement of the charging of fine aerosol particles by free electrons, from negative ionic charging. The charge and size of individual particles were measured in a Millikan cell, with charging electric field of 0.82 - 8.2 kV/cm. For particle sizes of 1.1 - 1.7 micrometer diameter, the particle charge values were much larger, and increased faster with particle size, than those predicted and observed for negative ionic charging. The particle charge values showed only slight dependence on the charging electric field. (Copyright (c) 1983 Pergamon Press Ltd.) |