Referenced Items are not available for this document.
In an ongoing program using ultrashort laser pulses to provoke discharges in air over considerable distances at electric fields below breakdown threshold, we have studied the conditions for the onset of streamers in such laser-produced plasmas, both experimentally and through numerical simulations. The results demonstrate the importance of the electron density and of its gradient on the generation of streamers. Also, a significant reduction of the breakdown voltage for a 30 cm plane-plane gap in air was observed with a laser pulse energy of 15 mJ. Finally, a direct comparison of laser-induced breakdown in air and in nitrogen shows the influence of electron attachment to oxygen on the discharge process
Published in:
Plasma Science, IEEE Transactions on
(Volume:27
,
Issue:
3
)
Date of Publication: Jun 1999
- Page(s):
- 688 - 700
- ISSN :
- 0093-3813
- INSPEC Accession Number:
- 6316879
- Digital Object Identifier :
- 10.1109/27.774673
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- Jun 1999
- Sponsored by :
- IEEE Nuclear and Plasma Sciences Society
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