Scattering, Extinction, and Albedo of Impedance-Boundary Objects

Ari Sihvola; Beibei Kong; Pasi Ylä-Oijala; Dimitrios C Tzarouchis; Henrik Wallén

doi:10.46620/19-0009

Scattering, Extinction, and Albedo of Impedance-Boundary Objects

Ari Sihvola, Beibei Kong, Pasi Ylä-Oijala, Dimitrios C Tzarouchis, Henrik Wallén

Research output: Contribution to journal › Article › Scientific › peer-review

35 Downloads (Pure)

Abstract

This article presents results on the scattering and absorption behavior of lossy impedance boundary spheres and cubes. The albedo (the ratio between the scattering and extinction cross sections) of these scatterers turns out to be a very insightful quantity in this respect. The strongly nonlinear dependence of albedo on the size of the objects is illustrated and compared with the albedo of dissipative penetrable spheres. The shape of the object seems to have
surprisingly little effect on the albedo. Furthermore, the effect of losses on the resonance behavior of small impedance-boundary spheres is analyzed, leading to the observation that the dipolar mode vanishes from the albedo spectrum, while higher order multipoles remain visible. This resembles a similar phenomenon earlier shown to appear in connection with small plasmonic scatterers.

Original language	English
Number of pages	4
Journal	URSI Radio Science Letters
Volume	1
DOIs	https://doi.org/10.46620/19-0009
Publication status	Published - 2019
MoE publication type	A1 Journal article-refereed

Access to Document

10.46620/19-0009

rev2-Sihvola_RSLAccepted author manuscript, 1.02 MB

Cite this

@article{1dd58c9e5d5d430baaad783522e3c981,

title = "Scattering, Extinction, and Albedo of Impedance-Boundary Objects",

abstract = "This article presents results on the scattering and absorption behavior of lossy impedance boundary spheres and cubes. The albedo (the ratio between the scattering and extinction cross sections) of these scatterers turns out to be a very insightful quantity in this respect. The strongly nonlinear dependence of albedo on the size of the objects is illustrated and compared with the albedo of dissipative penetrable spheres. The shape of the object seems to havesurprisingly little effect on the albedo. Furthermore, the effect of losses on the resonance behavior of small impedance-boundary spheres is analyzed, leading to the observation that the dipolar mode vanishes from the albedo spectrum, while higher order multipoles remain visible. This resembles a similar phenomenon earlier shown to appear in connection with small plasmonic scatterers.",

author = "Ari Sihvola and Beibei Kong and Pasi Yl{\"a}-Oijala and Tzarouchis, {Dimitrios C} and Henrik Wall{\'e}n",

year = "2019",

doi = "10.46620/19-0009",

language = "English",

volume = "1",

journal = "URSI Radio Science Letters",

issn = "2736-2760",

publisher = "International Union of Radio Science (URSI)",

}

TY - JOUR

T1 - Scattering, Extinction, and Albedo of Impedance-Boundary Objects

AU - Sihvola, Ari

AU - Kong, Beibei

AU - Ylä-Oijala, Pasi

AU - Tzarouchis, Dimitrios C

AU - Wallén, Henrik

PY - 2019

Y1 - 2019

N2 - This article presents results on the scattering and absorption behavior of lossy impedance boundary spheres and cubes. The albedo (the ratio between the scattering and extinction cross sections) of these scatterers turns out to be a very insightful quantity in this respect. The strongly nonlinear dependence of albedo on the size of the objects is illustrated and compared with the albedo of dissipative penetrable spheres. The shape of the object seems to havesurprisingly little effect on the albedo. Furthermore, the effect of losses on the resonance behavior of small impedance-boundary spheres is analyzed, leading to the observation that the dipolar mode vanishes from the albedo spectrum, while higher order multipoles remain visible. This resembles a similar phenomenon earlier shown to appear in connection with small plasmonic scatterers.

AB - This article presents results on the scattering and absorption behavior of lossy impedance boundary spheres and cubes. The albedo (the ratio between the scattering and extinction cross sections) of these scatterers turns out to be a very insightful quantity in this respect. The strongly nonlinear dependence of albedo on the size of the objects is illustrated and compared with the albedo of dissipative penetrable spheres. The shape of the object seems to havesurprisingly little effect on the albedo. Furthermore, the effect of losses on the resonance behavior of small impedance-boundary spheres is analyzed, leading to the observation that the dipolar mode vanishes from the albedo spectrum, while higher order multipoles remain visible. This resembles a similar phenomenon earlier shown to appear in connection with small plasmonic scatterers.

UR - https://www.ursi.org/Publications/RadioScienceLetters/Volume1/RSL19-0009R1_Sihvola.pdf

U2 - 10.46620/19-0009

DO - 10.46620/19-0009

M3 - Article

SN - 2736-2760

VL - 1

JO - URSI Radio Science Letters

JF - URSI Radio Science Letters

ER -

Scattering, Extinction, and Albedo of Impedance-Boundary Objects

Abstract

Access to Document

Other files and links

Fingerprint

Cite this