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RECORD NUMBER: 49 OF 105

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Main Title

First Measurements of Aerosol Particle Charging by Free Electrons - A Preliminary Report.

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 ;

Holdings

Library	Call Number	Additional Info	Location	Last Modified	Checkout Status
NTIS	PB84-177534	Some EPA libraries have a fiche copy filed under the call number shown.		07/26/2022

Collation

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.)

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