Electricity: measuring and testing – Using ionization effects
Patent
1981-09-28
1984-03-06
Tokar, Michael J.
Electricity: measuring and testing
Using ionization effects
324464, 324466, 324 72, 324 711, G01N 2762
Patent
active
044356811
ABSTRACT:
A tri-electrode probe consisting of a central electrode and a pair of measuring electrodes on the opposite sides of the central electrode disposed so as to symmetrically cover an immaginary surface having a plane of symmetry, is connected to a measuring system including minute current ammeters and a variable D.C. voltage source, the tri-electrode probe is positioned at a measuring point within an electric field where both positive and negative ions coexist as oriented in such direction that the plane of symmetry is directed in perpendicular to the direction of the electric field with one of the measuring electrodes opposed to a negative ion source and the other measuring electrode opposed to a positive ion source, a current flowing through the minute current ammeter connected to the central electrode is made substantially zero by varying the voltage of the variable D.C. voltage source, at that moment the current values indicated by the minute current ammeters connected to the measuring electrodes are read out, and positive and negative ionic current densities in the electric field are determined on the basis of the read current values.
Masuda Senichi
Nonogaki Yutaka
O'Shea Kevin D.
Tokar Michael J.
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