Accession Number : AD0252728

Title :   LEAKY WAVE CONTRIBUTIONS TO THE FIELD OF AN ELECTRIC LINE SOURCE ABOVE A PLASMA SLAB

Descriptive Note : Research rept.

Corporate Author : POLYTECHNIC INST OF BROOKLYN NY MICROWAVE RESEARCH INST

Personal Author(s) : TAMIR, T.

Report Date : 09 NOV 1960

Pagination or Media Count : 1

Abstract : As a further continuation of the investigations of leaky waves in dielectric slabs, the problem of a plasma slab, excited by a current line source, is analyzed. Since no surface waves are present in this case, the strength of the leaky waves is compared to the space field. The space wave field is evaluated and conditions for the existence of leaky waves are formulated; the location of leaky wave poles is then determined and their contribution to the field is evaluated. For most cases, this contribution is not appreciable and, to first order of magnitude, the total field is given only by the space wave. However, for very thick slabs and for frequencies higher than the plasma frequency, the leaky waves may become predominant in certain specific directions and for some ranges in the vicinity of the source; on the other hand, the importance of such leaky waves seems to be restricted, due to the existence of a large number of contributing poles. (Author)

Descriptors :   *ELECTROMAGNETIC RADIATION, *PLASMAS(PHYSICS), ELECTROMAGNETIC FIELDS, ELECTROMAGNETIC WAVE REFLECTIONS, TRANSMISSION LINES.

Distribution Statement : APPROVED FOR PUBLIC RELEASE