Emission of electromagnetic radiation and ionisation phenomena in inhomogeneous fields in air under lightning impulse voltages

This Letter deals with the ionisation phenomena in non-uniform medium air gaps stressed by lightning impulse voltages. The application of the Townsend theory for homogeneous fields, still yields quite reasonable results for the tested inhomogeneous experimental electric field setup. Measurements tak...

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Bibliographic Details
Published in:	Physics letters. A Vol. 272; no. 1; pp. 93 - 100
Main Authors:	Kanellias, A.A, Gonos, I.F, Topalis, F.V, Bourkas, P.D, Stathopulos, I.A
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 17-07-2000
Subjects:	Electromagnetic radiation Inhomogeneous field Ionisation Potential step Standard lightning impulse Townsend theory Electromagnetic radiation Inhomogeneous field Potential step Ionisation Standard lightning impulse Townsend theory
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Summary:	This Letter deals with the ionisation phenomena in non-uniform medium air gaps stressed by lightning impulse voltages. The application of the Townsend theory for homogeneous fields, still yields quite reasonable results for the tested inhomogeneous experimental electric field setup. Measurements taken on rod–plane air gaps, with clearance of 20 to 50 cm, show that the inception of the ionisation phenomena is related with an increase of the voltage across the gap that is characterised by a potential step of the voltage waveform. This phenomenon is related with the emission of infrared radiation.
ISSN:	0375-9601 1873-2429
DOI:	10.1016/S0375-9601(00)00404-7