Exception for the zero-forward-scattering theory.
Studies on single scattering of electromagnetic waves by magnetic particles were reported in the 1980s by Kerker et al. [J. Opt. Soc. Am.73, 765 (1983)]. They obtained that very small spherical particles with electric permittivity and magnetic permeability values such that epsilon=(4-mu)/(2mu+1) do not produce forward scattering. We show here that this condition contains an interesting exception at (epsilon=-2, mu=-2) when electric and magnetic resonances are present and around which the scattered field distribution is computed and described showing a polarization-insensitive behavior at the point (epsilon=-2, mu=-2).
García-Cámara
B
B
Departamento de Fisica Aplicada, Universidad de Cantabria, Santander, Spain. garciacb@unican.es
González
F
F
Moreno
F
F
Saiz
J M
JM
D004553:Electric Conductivity; D008027:Light; D008280:Magnetics; D015233:Models, Statistical; D008962:Models, Theoretical; D055095:Optics and Photonics; D010539:Permeability; D012542:Scattering, Radiation