Diffraction of EM-wave by a slit of finite width with Dirichlet conditions in cold plasma

2021 ◽  
Author(s):  
Ayesha Javaid ◽  
Muhammad Ayub ◽  
Sajjad Hussain ◽  
Sabih Haider ◽  
Ghulam Abbas Khan
Keyword(s):  
Cold Plasma ◽  
Finite Width ◽  
Dirichlet Conditions

SECOND ORDER BOUNDARY CONDITIONS FOR THE DRIFT-DIFFUSION EQUATIONS OF SEMICONDUCTORS

1995 ◽  
Vol 05 (04) ◽  
pp. 429-455 ◽  
Author(s):  
A. YAMNAHAKKI
Keyword(s):  
Boundary Conditions ◽  
Test Problem ◽  
Fluid Model ◽  
Diffusion Equations ◽  
Robin Boundary Conditions ◽  
Fluid Models ◽  
Drift Diffusion ◽  
Dirichlet Conditions ◽  
Robin Boundary ◽  
Two Fluid

By an asymptotic analysis of the Boltzmann equation of semiconductors, we prove that Robin boundary conditions for drift-diffusion equations provide a more accurate fluid model than Dirichlet conditions. The Robin conditions involve the concept of the extrapolation length which we compute numerically. We compare the two-fluid models for a test problem. The numerical results show that the current density is correctly computed with Robin conditions. This is not the case with Dirichlet conditions.

A VANISHING THEOREM FOR THE HEAT CONTENT OF A RIEMANNIAN MANIFOLD

2001 ◽  
Vol 33 (6) ◽  
pp. 743-748
Author(s):  
M. VAN DEN BERG
Keyword(s):  
Riemannian Manifold ◽  
Asymptotic Behaviour ◽  
Compact Subset ◽  
Heat Content ◽  
Vanishing Theorem ◽  
Dirichlet Conditions

The paper considers the asymptotic behaviour of the heat content of a riemannian manifold M, when Dirichlet conditions are imposed on a small compact subset of M.

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