Generalization of the Optical Theorem to the multipole source excitation
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作者:
Eremin, Yuri
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Lomonosov Moscow State Univ, Fac Computat Math & Cybernet, Lenins Hills, Moscow 119991, RussiaLomonosov Moscow State Univ, Fac Computat Math & Cybernet, Lenins Hills, Moscow 119991, Russia
Eremin, Yuri
[1
]
Wriedt, Thomas
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Inst Werkstofftech, Badgasteiner Str 3, D-28359 Bremen, GermanyLomonosov Moscow State Univ, Fac Computat Math & Cybernet, Lenins Hills, Moscow 119991, Russia
Wriedt, Thomas
[2
]
机构:
[1] Lomonosov Moscow State Univ, Fac Computat Math & Cybernet, Lenins Hills, Moscow 119991, Russia
Based on classic Maxwell's theory and the Gauss Theorem we extended the Optical Theorem to the case of a penetrable particle excited by a multipole source. We demonstrate that the derived extinction cross-section can be evaluated via. calculation of some specific derivatives from the scattered field at the point of the multipole location. The obtained relation between extinction cross-section and scattering cross-section can be employed to estimate the corresponding absorption cross-section. (C) 2016 Elsevier Ltd. All rights reserved.