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Light scattering simulation by oblate disc spheres using the null field method with discrete sources located in the complex plane

Hellmers, Jens and Wriedt, Thomas and Doicu, Adrian (2006) Light scattering simulation by oblate disc spheres using the null field method with discrete sources located in the complex plane. Journal of Modern Optics, 53 (3), pp. 267-282. Taylor & Francis Group. DOI: 10.1080/09500340500361346.

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Abstract

The T-matrix method, which is also known as the null field method (NFM) or extended boundary condition method (EBCM), has established itself as a well known and highly regarded method for calculating light scattering by non-spherical particles. Its biggest advantage is the possibility to obtain all information about the scattering characteristics of the particle and to store it into one matrix. This enables one to do additional investigations with low efforts. Unfortunately the standard NFM fails to converge for particles with extremely non-spherical particle shapes, like long cylinders or coin-like flat cylinders. In this paper we investigate light scattering by finite particles in the form of an oblate disc sphere, which can be described as flat cylinders with a rounded edge. We use an advanced form of the T-matrix method - the null field method with discrete sources (NFM-DS). By presenting light scattering results we would like to demonstrate the potential this advanced NFM-DS offers. It allows one to calculate particle shapes with aspect ratios (relation between radius and thickness of the particle) up to 100:1 and size parameters (relation between radius and wavelength) up to 30.

Document Type:Article
Title:Light scattering simulation by oblate disc spheres using the null field method with discrete sources located in the complex plane
Authors:
AuthorsInstitution or Email of Authors
Hellmers, JensUniversity of Bremen
Wriedt, ThomasUniversity of Bremen
Doicu, AdrianUNSPECIFIED
Date:February 2006
Journal or Publication Title:Journal of Modern Optics
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:53
DOI:10.1080/09500340500361346
Page Range:pp. 267-282
Publisher:Taylor & Francis Group
Status:Published
Keywords:Fibre Optics; Optical Communications; Electronics: Optics & Optoelectronics; Electrical & Computer Engineering: Optics & Optoelectronics; Electrical Engineering Communications: Optics & Optoelectronics; Optics, Optoelectronic Effects, Devices & Systems; Optoelectronics;
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Entwicklung von Atmosphärenprozessoren (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Dr.rer.nat. Franz Schreier
Deposited On:06 Mar 2007
Last Modified:27 Apr 2009 13:04

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