Influence of negative leader propagation on the triggering and guiding of high voltage discharges by laser filaments
作者： R. Ackermann , G. Méchain , G. Méjean , R. Bourayou , M. Rodriguez
DOI: 10.1007/S00340-005-2061-5
关键词:
摘要: The triggering and guiding of negative discharges using filaments induced by a femtosecond-terawatt laser pulse have been studied in sphere-plane gaps up to 4.5 meters. Fast-frame camera pictures allow the evaluation influence leader propagation on process. We show that plasma channel can either trigger space-leader discharge or act as path for head. For latter case results suggest linear dependence guided lengths 2.4 m, while formation reduces this length 50%. This effect is explained limited lifetime filament measured be about 1 μs.
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