Computations of near-field scattering demonstrate that the value of the asymmetry factor increases with increasing distance from a sphere and is asymptotic to that in the far field. Further, it was found that the dimensionless distance from the sphere to the far field was given by the value of the size parameter.
© 1983 Optical Society of America
Kouichi Kamiuto, "Near-field scattering by a large spherical particle embedded in a nonabsorbing medium," J. Opt. Soc. Am. 73, 1819-1822 (1983)