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function mob=Udopdepmob (mesh,mu,par,D);
% Udopdepmob (mu,par,D);
% This file is part of
%
% SECS2D - A 2-D Drift--Diffusion Semiconductor Device Simulator
% -------------------------------------------------------------------
% Copyright (C) 2004-2006 Carlo de Falco
%
%
%
% SECS2D is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 2 of the License, or
% (at your option) any later version.
%
% SECS2D is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with SECS2D; If not, see <http://www.gnu.org/licenses/>.
NI = sum(D(mesh.t(1:3,:)),1)'/3;
mob = par(1)*exp(-par(4)./NI) +...
(mu-par(2))./(1+(NI/par(5)).^par(7)) -...
par(3)./(1+(par(6)./NI).^par(8));
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