Polarization and Antennas Effects for Light Scattering by Anisotropic Elongated Nano-particles

For the model of optically soft elongated scattering particles with anisotropic dielectric permittivity antennas effects are considered, which appeared when one of the sizes (the length) of the particle is not small in comparison with the radiation wavelength. For the model of thin cylinder with finite length and anisotropic permittivity the forms of Mueller matrix for directed and chaotically oriented particles are calculated. The use of invariant form of the Mueller matrix elements through the Pauli matrixes has greatly simplified the procedure of the averaging on orientation of the particles. The dispersion peculiarities are described of the degree of linear polarization upon scattering on elongated particle. The results described here can be used, in particular, for the interpretation of the light scattering on carbon nanotubes.