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Transactions of the American Mathematical Society

ISSN 1088-6850(online) ISSN 0002-9947(print)

 

 

Diffusion approximation and computation of the critical size


Authors: C. Bardos, R. Santos and R. Sentis
Journal: Trans. Amer. Math. Soc. 284 (1984), 617-649
MSC: Primary 45K05; Secondary 45M05, 82A70
DOI: https://doi.org/10.1090/S0002-9947-1984-0743736-0
MathSciNet review: 743736
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Abstract: This paper is devoted to the mathematical definition of the extrapolation length which appears in the diffusion approximation. To obtain this result, we describe the spectral properties of the transport equation and we show how the diffusion approximation is related to the computation of the critical size. The paper also contains some simple numerical examples and some new results for the Milne problem.


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DOI: https://doi.org/10.1090/S0002-9947-1984-0743736-0
Article copyright: © Copyright 1984 American Mathematical Society