West, NJJandrell, IRForbes, A2009-04-032009-04-032008-08West, 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 10http://hdl.handle.net/10204/3284Published in the Proceedings of SPIE the International Society for Optical EngineeringThe 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 expectedenLaser induced plasmaLaser induced arcRemote triggeringHigh voltage systemsHigh voltage engineeringOptical technologies for armingOptical technologies for safingOptical technologies fuzingOptical technologies firingConference PresentationWest, N., Jandrell, I., & Forbes, A. (2008). Remote triggering of high voltage systems by laser-induced plasmas. SPIE the International Society for Optical Engineering. http://hdl.handle.net/10204/3284West, NJ, IR Jandrell, and A Forbes. "Remote triggering of high voltage systems by laser-induced plasmas." (2008): http://hdl.handle.net/10204/3284West N, Jandrell I, Forbes A, Remote triggering of high voltage systems by laser-induced plasmas; SPIE the International Society for Optical Engineering; 2008. http://hdl.handle.net/10204/3284 .TY - Conference Presentation AU - West, NJ AU - Jandrell, IR AU - Forbes, A AB - 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 DA - 2008-08 DB - ResearchSpace DP - CSIR KW - Laser induced plasma KW - Laser induced arc KW - Remote triggering KW - High voltage systems KW - High voltage engineering KW - Optical technologies for arming KW - Optical technologies for safing KW - Optical technologies fuzing KW - Optical technologies firing LK - https://researchspace.csir.co.za PY - 2008 T1 - Remote triggering of high voltage systems by laser-induced plasmas TI - Remote triggering of high voltage systems by laser-induced plasmas UR - http://hdl.handle.net/10204/3284 ER -