Time resolved simulation of lightning by LIP

Details Time resolved simulation of lightning by LIP Time resolved simulation of lightning by LIP

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19..273j&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 19, Feb. 7, 1992, p. 273-276.

Physics

13

Air, Electron Density (Concentration), Laser Plasmas, Lightning, Plasma Spectra, Neodymium Lasers, Nonequilibrium Conditions, Plasma Temperature

Scientific paper

Results of time-resolved spectra of lightning simulation in air by laser-induced plasma (LIP) are reported. The measured electron temperatures varied from 17,000 +/-1000 K at 600 ns to 12,000 +/-1000 K at 4 microsec after the ignition of the plasma. Electron densities in the plasma varied from (7.0 +/-1.4) x 10 exp 17/cu cm to (9.0 +/-1.8) x 10 exp 16/cu cm for the above times. A comparison of state variables for LIP and natural lightning is presented. Immediately following the ignition, both natural lightning and LIP are found to reach temperatures in excess of 16,000 K and relax to ambient pressure with different rates. They are expected to approach the 2000-4000-K temperature range, which is important to chemical synthesis, in an asymptotically similar fashion.

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