A set of basis functions to improve numerical calculation of Mie scattering in the Chandrasekhar-Sekera representation

Autor(es)

Martinez, Alexandre Souto ^{[1, 2]} ; Alcaras, Jose Renato ^[1] ; Arruda, Tiago Jose ^{[3, 4]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, FFCLRP, Ribeirao Preto - Brazil

^[2] INCT SC, Rio De Janeiro - Brazil

^[3] Univ Sao Paulo, Inst Fis Sao Carlos, Sao Carlos, SP - Brazil

^[4] Univ Fed Alfenas UNIFAL MG, Inst Ciencias Exatas ICEx, Alfenas - Brazil

• Tipo de documento: Artigo Científico
• Fonte: WAVES IN RANDOM AND COMPLEX MEDIA; v. 31, n. 6, p. 2275-2289, NOV 2 2021.
• Citações Web of Science: 0

Resumo

Numerical calculations of light propagation in random media demand the multiply scattered Stokes intensities to be written in a common fixed reference. In multiple-scattering schemes, a particularly useful way to perform automatically these basis transformations between reference frames is to write the scattered intensities in the Chandrasekhar-Sekera representation. The main drawback with this representation is the necessity of numerical tests to deal with the limiting situations of the small particle (Rayleigh) and forward/backward scattering. Here, a new set of basis functions is presented to describe the scattering of light by spherical particles (Mie scattering) in the Chandrasekhar-Sekera representation. These basis functions can be implemented in a new algorithm to calculate the Mie scattering amplitudes, which leads straightforwardly to all the scattering quantities. In contrast to the traditional implementation, this set of basis functions implies to natural numerical convergence to the above mentioned limiting cases, which are thoroughly discussed. (AU)

• Processo FAPESP: 15/21194-3 - Interação entre átomos e metamateriais: efeito Purcell e teoria de meios efetivos
• Beneficiário: Tiago José Arruda
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 18/21694-4 - Metamateriais acústicos: campos internos e teoria de espalhamento
• Beneficiário: José Renato Alcarás
• Modalidade de apoio: Bolsas no Brasil - Doutorado