球形粒子の内部電界振幅分布と散乱パターン近似
1986 年 55 巻 2 号 p. 153-159
詳細
1986 年 55 巻 2 号 p. 153-159
The Rayleigh-Debye approximation in light scattering theory is extended to larger values of phase parameter. The first step in our theory is to assume that the amplitude of electric field of incident light inside the scatterer has spherical symmetry for spherical particles. The amplitude function is determined empirically from the analysis of scattering patterns computed from the Mie theory. The parameters of the function are particle size, relative refractive index of scatterer and wavelength of incident light. This function is incorporated in the original Rayleigh-Debye theory. From the numerical calculation of scattering patterns, the present approximation is verified to be valid in the range of phase parameter 2ka(nr-1)≤2π.
