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The measurement of electrostatic potential attributable to net ion space charge in air

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2 Author(s)
Carroll, J. S. ; Stanford University, Stanford, Calif. ; Hammond, S. B.

The electrostatic potential in air resulting from an ion space charge of one predominant sign is difficult to measure with existing potential-measuring instruments. An ideal instrument should not deplete the ion space charge and should be capable of measuring relatively low potentials. An instrument using the null-and-substitution method, and combining an electronic pulse widener and a vacuum-tube voltmeter, is described. This instrument has an application in measuring ion density in air by measuring the electrostatic potential attributable to ion space charge; Poisson's equation can then be solved for ion density.

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American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the  (Volume:73 ,  Issue: 6 )