Accession Number : AD0018292

Title :   SCATTERING OF PLANE ELECTROMAGNETIC RADIATION BY AN INFINITE CYLINDRICAL MIRROR

Corporate Author : HARVARD UNIV CAMBRIDGE MASS CRUFT LAB

Personal Author(s) : TURNER,ROBERT D.

Report Date : 15 MAY 1953

Pagination or Media Count : 1

Abstract : A variational principle was used in conjunction with a trial function for the surface-current density to obtain expressions for the far-zone field and scattering cross section of a cylindrical mirror excited by a plane wave. The trial function consisted of a linear combination of the optical and quasi-static current distributions so that the derived expressions are valid over a wide range of frequencies. The plane wave was assumed to be polarized so that (1) the electric vector paralled the mirror axis and (2) the formation was reduced to a 2-dimensional scalar problem. The method was considered applicable to the evaluation of the properties of a large class of diffracting obstacles.

Descriptors :   CYLINDRICAL BODIES, DISTRIBUTION, FREQUENCY, FUNCTIONS, MIRRORS, OPTICAL PROPERTIES, PLANE WAVES, RANGE(EXTREMES), SCATTERING CROSS SECTIONS, STATICS, VARIATIONAL PRINCIPLES.

Distribution Statement : APPROVED FOR PUBLIC RELEASE