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Bipolar charging and discharging of a perfectly conducting sphere in a lossy medium stressed by a uniform electric field

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Show simple item record Hwang, J. George Zahn, Markus Pettersson, Leif A. A. 2012-10-04T20:40:22Z 2012-10-04T20:40:22Z 2011-04 2010-11
dc.identifier.issn 0021-8979
dc.identifier.issn 1089-7550
dc.description.abstract Generalized analysis is presented extending recent work of the charging of a perfectly conducting sphere from a single charge carrier to two charge carriers of opposite polarity, with different values of volume charge density and mobility and including an ohmic lossy dielectric region surrounding a perfectly conducting sphere. Specific special cases treated are: (1) unipolar positive or negative charging and discharging and (2) bipolar charging and discharging; both cases treating zero and nonzero conductivity of the dielectric region surrounding a sphere. It is found that there exists a theoretical limit to the amount of charge, either positive or negative, that can accumulate on a perfectly conducting sphere for a specific applied electric field magnitude, permittivity of the surrounding medium, and sphere size. However, in practice this saturation charge limit is not reached and the sphere is charged to a lower value due to the nonzero conductivity of the surrounding medium and the existence of both positive and negative mobile carriers. Moreover, it is the respective effective conductivities of these positive and negative carriers, as well as the conductivity of the surrounding medium, which strongly influences the sphere’s lowered saturation charge limit, charge polarity, charging rate, and discharging rate. en_US
dc.language.iso en_US
dc.publisher American Institute of Physics (AIP) en_US
dc.relation.isversionof en_US
dc.rights Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. en_US
dc.source MIT web domain en_US
dc.title Bipolar charging and discharging of a perfectly conducting sphere in a lossy medium stressed by a uniform electric field en_US
dc.type Article en_US
dc.identifier.citation Hwang, J. George, Markus Zahn, and Leif A. A. Pettersson. “Bipolar Charging and Discharging of a Perfectly Conducting Sphere in a Lossy Medium Stressed by a Uniform Electric Field.” Journal of Applied Physics 109.8 (2011): 084331. © 2011 American Institute of Physics en_US
dc.contributor.department Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science en_US
dc.contributor.mitauthor Zahn, Markus
dc.contributor.mitauthor Hwang, J. George
dc.relation.journal Journal of Applied Physics en_US
dc.identifier.mitlicense PUBLISHER_POLICY en_US
dc.eprint.version Final published version en_US
dc.type.uri en_US
eprint.status en_US
dspace.orderedauthors Hwang, J. George; Zahn, Markus; Pettersson, Leif A. A. en

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