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Transition matrix of a nonspherical particle in the non-local optical response theory

Doicu, Adrian and Eremin, Yuri and Wriedt, Thomas (2020) Transition matrix of a nonspherical particle in the non-local optical response theory. Journal of Quantitative Spectroscopy & Radiative Transfer, 242, p. 106756. Elsevier. doi: 10.1016/j.jqsrt.2019.106756. ISSN 0022-4073.

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Official URL: https://www.sciencedirect.com/science/article/abs/pii/S0022407319307708

Abstract

In this paper, we present two methods for deriving the transition matrix of a nonspherical particle in the non-local optical response theory, which is important for particles of size below about 10 nm. The key point in our analysis is the separation of the internal field into a transverse and a longitudinal component. The first method for T-matrix calculation relies on the null-field equation for the total field inside the particle, the null-field equation for the longitudinal field outside the particle, and the integral representation of the scattered field. The second method uses a projection scheme for the additional boundary condition instead of the null-field equation for the longitudinal field. When the non-local effects are neglected, the transition matrix becomes the transition matrix in the local optical response theory, while for spherical particles, the transition matrix is analytically equivalent to the transition matrix derived by the extended Mie scattering theory that considers non-local optical response. The numerical results obtained by the T-matrix method are in good agreement with the results delivered by the discrete sources method which also considers non-local optical response.

Item URL in elib:https://elib.dlr.de/138262/
Document Type:Article
Title:Transition matrix of a nonspherical particle in the non-local optical response theory
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Doicu, AdrianAdrian.Doicu (at) dlr.deUNSPECIFIED
Eremin, YuriLomonosov University MoscowUNSPECIFIED
Wriedt, ThomasUniversity of BremenUNSPECIFIED
Date:February 2020
Journal or Publication Title:Journal of Quantitative Spectroscopy & Radiative Transfer
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:242
DOI :10.1016/j.jqsrt.2019.106756
Page Range:p. 106756
Publisher:Elsevier
ISSN:0022-4073
Status:Published
Keywords:Non-local effect. Non-local optical response theory. Transition matrix. Null-field method.
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):Vorhaben Spectroscopic Methods in Remote Sensing (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Doicu, Adrian
Deposited On:25 Nov 2020 16:09
Last Modified:25 Nov 2020 16:09

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