Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
77 (2000), S. 3158-3160
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The temporal evolution of electric breakdown in air at atmospheric pressure by Nd:yttrium–aluminum–garnet Q-switched nanosecond laser pulses was studied from the nanosecond to the millisecond time scale by shadowgraphy and interferometry techniques. The results were modeled with a gasdynamic code with good agreement. It was possible to simultaneously model the whole evolution of the plasma, the shock wave, and the hot core air. The shock wave velocity was determined to be ≥60 km s−1 at 20 ns. The plasma temperature was found to reach about 1.7×104 K at 1 μs and the hot core air temperature was determined to be 〈103 K at 100 μs. This letter presents an experimental work that extends the study of laser induced plasmas to millisecond time scales. © 2000 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1324986
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