Title :
Nonuniqueness of "Real ray" equations when the ray direction is complex
Author :
Bennett, J.A. ; Censor, D.
Abstract :
When the ray direction at a point is complex, there is no real direction in which the gradient of the wave vector k is uniquely determined by the value of k at the point. This contrasts with the ease in which the ray direction is real. A geometric proof of the result is presented.
Keywords :
Absorption; Anisotropic magnetoresistance; Differential equations; Dispersion; Head; Partial differential equations;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/PROC.1977.10772
