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J. Appl. Phys. 44, 3102 (1973); http://dx.doi.org/10.1063/1.1662715 (11 pages)
Corona discharge photography
(Received 17 January 1973)
Using short (∼ 100 μsec) pulses of rf (1 MHZ) applied to parallel electrodes in air at small electrode spacings (∼ 250 μ) and at an applied field of ∼ 106 V∕cm, discharges from both biological and metallic electrodes occurred from a network of points in the electrode surface. These discharges were recorded photographically. Multiple pulses lead to a superposition effect such that a uniform corona exposure appeared on the film. Some effects of electrode material, spacing, and orientation are presented. The results are found to be completely explicable in terms of the ``streamer'' phenomenon of corona discharge. In fact, the wide variety of color effects observed in ``Kirlian'' photography can be accounted for by this mechanism.
© 1973 American Institute of Physics
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E. Nasser and L. B. Loeb, J. Appl. Phys. 34, 3340 (1963)JAPIAU000034000011003340000001.H. W. Bandel, Phys. Rev. 84, 92 (1951).
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