Accession Number : AD0611035

Title :   ANTI-WAVEGUIDE PROPAGATION IN A HETEROGENEOUS LAYER,

Corporate Author : EMMANUEL COLL BOSTON MASS RESEARCH LANGUAGE CENTER

Personal Author(s) : Shang,Erh-ch'ang

Report Date : JUN 1964

Pagination or Media Count : 24

Abstract : This paper examines the field of a point radiator in a heterogeneous layer in which there is no shear elasticity and the parameter of the medium is a linear function, given H/lambda >> 1, where H is the thickness of the layer, and lambda, the wavelength. It studies theoretically three types of anti-waveguide propagation not formed by total reflection of the boundary surface. A beam interpretation is obtained in the Wentzel-Kramers-Brillouin approximation for the dispersion equation for normal waves. A formula is given for the field intensity in the effective shadow when the boundary condition is described by the numerical coefficient of reflection. (Author)

Descriptors :   (*MECHANICAL WAVES, PROPAGATION), (*ACOUSTICS, PROPAGATION), BOUNDARY VALUE PROBLEMS, CHINA

Distribution Statement : APPROVED FOR PUBLIC RELEASE