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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/3284

Title: Remote triggering of high voltage systems by laser-induced plasmas
Authors: West, NJ
Jandrell, IR
Forbes, A
Keywords: Laser induced plasma
Laser induced arc
Remote triggering
High voltage systems
High voltage engineering
Optical technologies for arming
Optical technologies for safing
Optical technologies fuzing
Optical technologies firing
Issue Date: Aug-2008
Publisher: SPIE the International Society for Optical Engineering
Citation: West, NJ, Jandrell, IR and Forbes, A. 2008. Remote triggering of high voltage systems by laser-induced plasmas. Optical Technologies for Arming, Safing, Fuzing, and Firing 4. San Diego, CA, United States, 13 August, pp 10
Abstract: The aim of this paper is to compare the electrical performance of an orthogonally with a coaxially laser-triggered spark gap. Each of these two gaps has its own advantages and disadvantages. At the same time, a Rogowski profile spark gap was investigated in terms of its orthogonally laser-triggered performance. It was found that the Nd:YAG laser used (1 064 nm, 800 mJ) was able to reduced the breakdown voltage of a 50 mm gap by 70% from 135 kV to about 40 kV. The position of the laser-induced plasma was found to play a significant role in the breakdown process – best results being obtained when the laser was focused in the centre of the gap. Finally, the shape of the laser-induced arc is dependant on the applied electric field. When the field is low, the arc tends to avoid the laser-induced plasma thus exhibiting a very anomalous behaviour. When the field is increased, the arc tends to attach itself to the plasma as expected
Description: Published in the Proceedings of SPIE the International Society for Optical Engineering
URI: http://hdl.handle.net/10204/3284
Appears in Collections:Laser physics and technology
General science, engineering & technology

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