Light scattering by composite particles comparable with wavelength and their approximation by systems of spheres

Citation
Es. Zubko et al., Light scattering by composite particles comparable with wavelength and their approximation by systems of spheres, OPT SPECTRO, 91(2), 2001, pp. 273-277
Citations number
17
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
OPTICS AND SPECTROSCOPY
ISSN journal
0030400X → ACNP
Volume
91
Issue
2
Year of publication
2001
Pages
273 - 277
Database
ISI
SICI code
0030-400X(200108)91:2<273:LSBCPC>2.0.ZU;2-F
Abstract
Scattering properties of an ensemble of independent, randomly-oriented syst ems consisting of two contacting wavelength-sized dielectric particles of s pherical and random shapes are studied. The optical properties of such ense mbles are shown to be determined, to a considerable degree, by the properti es of individual components of the system; the role of collective effects i s insignificant. For large scattering angles, systems consisting of two sph eres form the negative branch of the degree of linear polarization when an individual sphere also forms it, and when systems composed of equivalent pa rticles of random shape do not exhibit the negative branch. The conclusion is made that the modeling of the scattering properties of aspherical and ag gregate particles by using systems of spheres of size of the order of the o ptical wavelength is inadequate. (C) 2001 MAIK "Nauka/Interiodica".