Abstract
For the nonstationary radiative transfer equation, the inverse problem of determining the attenuation coefficient from a known solution at the domain boundary is considered. The structure and the continuous properties of the solution to an initial-boundary value problem for the radiative transfer equation are studied. Under special assumptions about the radiation source, it is shown that the inverse problem has a unique solution and a formula for the Radon transform of the attenuation coefficient is derived. The quality of the reconstructed tomographic images of the sought function is analyzed numerically in the case of various angular and time flux density distributions of the external source.
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Funding
This work was supported by the Russian Foundation for Basic Research (project no. 20-01-00173) and by the Ministry of Science and Higher Education of the Russian Federation (agreement nos. 075-01095-20-00, 075-02-2020-1482-1).
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Translated by I. Ruzanova
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Prokhorov, I.V., Yarovenko, I.P. Determination of the Attenuation Coefficient for the Nonstationary Radiative Transfer Equation. Comput. Math. and Math. Phys. 61, 2088–2101 (2021). https://doi.org/10.1134/S0965542521120101
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DOI: https://doi.org/10.1134/S0965542521120101