DocumentCode :
2344836
Title :
Simulation of RF reflection from slightly irregular plasma sheets
Author :
Wallace, T. ; Short, R. ; Papadopoulos, Kyriakos
fYear :
1989
fDate :
0-0 1989
Firstpage :
152
Abstract :
Summary Form only given, as follows. The effects of small-magnitude irregularities of a variety of characteristic scales on the reflective properties of sheets of highly collisional plasma are of interest in the design of a RF transmission system that uses these sheets as reflectors. The phase perturbation of the reflected wavefront induced by the presence of these irregularities has been calculated using both a ray-based perturbational approach and a finite-difference full-wave technique. The effects of absorption within the plasma sheet on the phase perturbation have been found to be small. The results of the two techniques have been compared for a wide range of irregularity scales and several values of v/ omega , yielding a prescription of choosing a technique on the basis of the ratio of incident wavelength to irregularity scale and plasma layer depth. The effect of the phase perturbation on the shape and intensity of the reflected RF beam has been calculated, and the contribution of the irregularities has been compared to RF beam distortion and attenuation due to diffraction and collisional absorption, resulting in a simple delineation of the regime where the effects of irregularities must be considered in predicting system performance.<>
Keywords :
electromagnetic wave propagation in plasma; plasma simulation; RF reflection; attenuation; characteristic scales; distortion; finite-difference full-wave technique; highly collisional plasma; intensity; irregularity scales; phase perturbation; plasma layer depth; ray-based perturbational approach; reflected wavefront; reflective properties; reflectors; regime; shape; simulation; slightly irregular plasma sheets; small-magnitude irregularities; transmission system; Electromagnetic propagation in plasma media; Plasmas; Simulation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Plasma Science, 1989. IEEE Conference Record - Abstracts., 1989 IEEE International Conference on
Conference_Location :
Buffalo, NY, USA
Type :
conf
DOI :
10.1109/PLASMA.1989.166261
Filename :
166261
Link To Document :
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