Mathematical basis of scattering problems from penetrable obstacles and cracks

Mathematical basis of scattering problems from penetrable obstacles and cracks
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可穿透障碍物和裂缝散射问题的数学基础

DOI:
10.1063/1.3525831
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发表时间:
2010-12
影响因子:
1.3
通讯作者:
Mao Yao
Mao Yao
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Guozheng Yan;Mao Yao

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We consider a kind of scattering problem which models the scattering of an electromagnetic time-harmonic plane wave by an infinite cylinder having an open arc and a penetrable obstacle in R2 as cross section. To this end, we solve a scattering problem for the Helmholtz equation in R2 where the scattering object is a combination of a crack Γ and a penetrable obstacle D, and we have Dirichlet-Impedance type boundary condition on Γ and transmission boundary condition on ∂D. Applying potential theory, the problem can be reformulated as a boundary integral system. We establish the existence and uniqueness of a weak solution to the system by using the modified Fredholm theory.
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