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The relationship between current and channel diameter of 30 cm long laboratory sparks
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. (Åskforskning)
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2012 (English)In: Journal of Electrostatics, ISSN 0304-3886, E-ISSN 1873-5738, Vol. 70, no 6, 512-516 p.Article in journal (Refereed) Published
Abstract [en]

In this study the dependence of channel diameter of 30 cm long sparks on discharge current is analyzed using a photographic technique. The results show the radial channel intensity variation follows a Gaussian distribution. The channel diameter (D), defined as the width of the intensity profile at 10% level, increases with the increasing peak current (I-p) up to 3 kA. The relationship between the two parameters can be represented by the equation, D = 8.36 ln(I-p) + 1.598, where D is in mm and I-p is in kA. The experimental results agree reasonably well with the available theory.

Place, publisher, year, edition, pages
2012. Vol. 70, no 6, 512-516 p.
Keyword [en]
Sparks, Channel diameter, Current, Photographic technique, Lightning
National Category
Meteorology and Atmospheric Sciences Engineering and Technology
Research subject
Engineering Science with specialization in Atmospheric Discharges
URN: urn:nbn:se:uu:diva-189129DOI: 10.1016/j.elstat.2012.08.003ISI: 000311268100007OAI: oai:DiVA.org:uu-189129DiVA: diva2:582506
Available from: 2013-01-04 Created: 2012-12-25 Last updated: 2016-02-03

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Rahman, MahbuburCooray, Vernon
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