Channel Tortuosity of Long Laboratory Sparks

dc.contributor.author	Amarasinghe, D.
dc.contributor.author	Sonnadara, D.U.J.
dc.contributor.author	Berg, M.
dc.contributor.author	Cooray, V.
dc.date.accessioned	2011-10-05T07:08:53Z
dc.date.available	2011-10-05T07:08:53Z
dc.date.issued	2007
dc.identifier.citation	Journal of Electrostatics, 65 8 (2007) 521-526
dc.identifier.uri	http://archive.cmb.ac.lk:8080/xmlui/handle/70130/201
dc.description.abstract	Channel tortuosity of 50 cm long laboratory sparks were measured by analyzing a set of images taken by three cameras. The cameras were placed at a radial distance of 200 cm from the spark gap. The angle between any two cameras was 120. The sparks were generated between a steel rod and a plane electrode. The distribution of the direction change of the channel was found to be Gaussian with a standard deviation of 15.3. The average tortuosity of the channel defined as the mean absolute value of the direction change was 11.8  1.4 which is smaller than the average tortuosity of natural lightning and close to the tortuosity of triggered lightning. The average tortuosity is dependent on the segment length used in calculating the direction change. A gradual increase in the average tortuosity (0.08 per cm) was seen when the sparks propagate towards the plane electrode	en_US
dc.language.iso	en	en_US
dc.subject	Channel Tortuosity	en_US
dc.subject	Laboratory Sparks	en_US
dc.title	Channel Tortuosity of Long Laboratory Sparks	en_US
dc.type	Research abstract	en_US