Diffraction by a strip under mixed boundary conditions

Abstract

A direct technique is presented for solving the problem of diffraction by a strip undet rriixed boundary conditions. Taking account of correct edge conditions, the problem is reduced to two pairs of couPIM integral equations by means of a method due to Jones in the theory of Wiener-Hopf technique. The first approxblation to the solution of these coupled integral equations is obtained for larve values of the width of the strip. An expression for the quantity representing the sum of the absorption and scattering coefficients of the strip has been obtained by using the approximate solution. Highet order approximation are avoided because of the complications in the presentation of the results.