TY - JOUR

T1 - Light scattering by non-spherical particles

T2 - 13th International Workshop on Lidar Multiple Scattering Experiments

AU - Farafonov, Victor

AU - Il'in, Vladimir

PY - 2005/11/21

Y1 - 2005/11/21

N2 - There are many exact theoretical methods to simulate light scattering by small particles, but only a few of them, including in the first turn the Extended Boundary Condition Method (EBCM), allow one to perform calculations usually required in practical tasks, i.e. to take into account size, orientation and so on distributions of (simple model) scatterers. Importance of these methods caused by their wide applications was stimulating long time investigations of their applicability ranges. We report recent results of the analysis of EBCM-like methods. It is confirmed that the methods give a convergent solution (i.e. are mathematically correct) everywhere under the known conditions of validity of the Rayleigh hypothesis. Convergence of these methods used to calculate only the far-field characteristics of the scattered field (cross-sections, scattering matrix, etc.) occurs under a weaker condition. These general conditions are applied to the particular cases of spheroidal and Chebyshev particles as well as particles with sharp edges, and numerical results confirming the conclusions of our theoretical analysis are presented.

AB - There are many exact theoretical methods to simulate light scattering by small particles, but only a few of them, including in the first turn the Extended Boundary Condition Method (EBCM), allow one to perform calculations usually required in practical tasks, i.e. to take into account size, orientation and so on distributions of (simple model) scatterers. Importance of these methods caused by their wide applications was stimulating long time investigations of their applicability ranges. We report recent results of the analysis of EBCM-like methods. It is confirmed that the methods give a convergent solution (i.e. are mathematically correct) everywhere under the known conditions of validity of the Rayleigh hypothesis. Convergence of these methods used to calculate only the far-field characteristics of the scattered field (cross-sections, scattering matrix, etc.) occurs under a weaker condition. These general conditions are applied to the particular cases of spheroidal and Chebyshev particles as well as particles with sharp edges, and numerical results confirming the conclusions of our theoretical analysis are presented.

KW - Applicability of methods

KW - Light scattering theory

UR - http://www.scopus.com/inward/record.url?scp=27744453567&partnerID=8YFLogxK

U2 - 10.1117/12.617257

DO - 10.1117/12.617257

M3 - Conference article

AN - SCOPUS:27744453567

VL - 5829

SP - 109

EP - 116

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

SN - 0277-786X

M1 - 14

Y2 - 28 June 2004 through 1 July 2004

ER -