Sommario
In questo articolo viene studiata un'equazione integrale singolare che si presenta nella teoria del trasporto radiativo con indicatrici di scattering polinomiali. I coefficienti di riflessione e trasmissione e le funzioni ausiliarie di un'atmosfera semiinfinita soddisfano questa equazione, con opportune determinazioni del termine noto. La soluzione generale ψ dell'equazione viene espressa in forma chiusa mediante i suoi momenti ψn e mediante la soluzione fondamentale di un problema omogeneo di Hilbert. Le ψn (n ⩾ 1) soddisfano a loro volta un sistema di equazioni lineari, e ψ 0 risulta legato alle successive ψn da una semplice relazione.
Summary
A singular integral equation arising in the theory of radiative transfer with polynomial scattering indicatrices is studied in this paper. In the case of a semi-infinite atmosphere, brightness coefficients and auxiliary functions satisfy this equation when the free term is suitably specified. The general solution ψ of the singular equation is given a closed form in terms of its moments ψn and of the fundamental solution of a homogeneous Hilbert problem. The ψn's (n ⩾ 1) are seen to satisfy a set of linear equations, and ψ 0 turns out to be simply related to the subsequent ψn's.
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This work was done under the auspices of the CNR Research Groups.
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Trombetti, T. On a singular integral equation in the theory of radiative transfer. Meccanica 6, 119–124 (1971). https://doi.org/10.1007/BF02128326
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DOI: https://doi.org/10.1007/BF02128326