TY - GEN
T1 - Spatial and temporal evolutions of microwave scattering from laser spark in air
AU - Sawyer, Jordan
AU - Zhang, Zhili
AU - Shneider, Mikhail N.
PY - 2013
Y1 - 2013
N2 - In this paper phenomena seen in microwave scattering experiements from a laser-induced plasma in atmospheric air will be explained via Mie scattering theory. The relative transparency of the laser-induced plasma at microwave frequency is shown to lead to a transition from coherent Rayleigh scattering to Mie scattering. A sharp increase in conductivity during the avalanche ionization phase of the spark evolution alters the microwave penetration from total transparency to partial shielding. Temporal and polar scatterings plots will be presented to show the effects of the transition from Rayleigh scattering to Mie scattering and change in transparency.
AB - In this paper phenomena seen in microwave scattering experiements from a laser-induced plasma in atmospheric air will be explained via Mie scattering theory. The relative transparency of the laser-induced plasma at microwave frequency is shown to lead to a transition from coherent Rayleigh scattering to Mie scattering. A sharp increase in conductivity during the avalanche ionization phase of the spark evolution alters the microwave penetration from total transparency to partial shielding. Temporal and polar scatterings plots will be presented to show the effects of the transition from Rayleigh scattering to Mie scattering and change in transparency.
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M3 - Conference contribution
AN - SCOPUS:84881464201
SN - 9781624101816
T3 - 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
BT - 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
T2 - 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
Y2 - 7 January 2013 through 10 January 2013
ER -