diff --git a/Make/files b/Make/files
index 0bc792e..dc8e75e 100644
--- a/Make/files
+++ b/Make/files
@@ -1,11 +1,13 @@
 diffusivityModel/Particle/Particle.C
 diffusivityModel/Neutral/Neutral.C
 diffusivityModel/Ion/Ion.C
+diffusivityModel/Electron/Electron.C
 
 diffusivityModel/Interaction/Interaction.C
 diffusivityModel/Stockmayer/Stockmayer.C
 diffusivityModel/Coulomb/Coulomb.C
 diffusivityModel/N64/N64.C
+diffusivityModel/CrossSection/CrossSection.C
 
 diffusivityModel/diffusivityModel/diffusivityModel.C
 
diff --git a/Make/options b/Make/options
index 2df0871..a84e016 100644
--- a/Make/options
+++ b/Make/options
@@ -1,12 +1,14 @@
 EXE_INC = \
     -g \
     -IdiffusivityModel/Particle \
+    -IdiffusivityModel/Electron \
     -IdiffusivityModel/Neutral \
     -IdiffusivityModel/Ion \
     -IdiffusivityModel/Interaction \
     -IdiffusivityModel/Stockmayer \
     -IdiffusivityModel/Coulomb \
     -IdiffusivityModel/N64 \
+    -IdiffusivityModel/CrossSection \
     -IdiffusivityModel/diffusivityModel \
     -I$(LIB_SRC)/finiteVolume/lnInclude \
     -I$(LIB_SRC)/meshTools/lnInclude \
diff --git a/diffusivityModel/Coulomb/Coulomb.C b/diffusivityModel/Coulomb/Coulomb.C
index 7aea49b..4ccb5e2 100644
--- a/diffusivityModel/Coulomb/Coulomb.C
+++ b/diffusivityModel/Coulomb/Coulomb.C
@@ -24,6 +24,7 @@ License
 \*---------------------------------------------------------------------------*/
 
 #include "Coulomb.H"
+#include "Electron.H"
 
 #include "error.H"
 
@@ -49,15 +50,14 @@ Foam::Coulomb::Coulomb(const Ion& a, const Ion& b)
 }
 
 
-/*
 Foam::Coulomb::Coulomb(const Electron& a, const Ion& b)
 :
     // a_(a),
     // b_(b),
     // eij_(abs(a_.z()*b_.z())*sqr(a_.e)/(4.0*a_.pi*a_.eps0*a_.k)),
     // Wij_(1.0/(1.0/a_.W() + 1.0/b_.W()))
-    eij_(abs(a.z()*b.z())*sqr(a.e)/(4.0*a.pi*a.eps0*a.k)),
-    Wij_(1.0/(1.0/a.W() + 1.0/b.W()))
+    eij_(abs(a.z()*b.z())*sqr(a.e)/(4.0*Foam::Ion::pi*Foam::Ion::eps0*Foam::Ion::k)),
+    Wij_(inv(inv(a.W()) + inv(b.W())))
 {
 }
 
@@ -68,10 +68,12 @@ Foam::Coulomb::Coulomb(const Electron& a, const Electron& b)
     // b_(b),
     // eij_(abs(a_.z()*b_.z())*sqr(a_.e)/(4.0*a_.pi*a_.eps0*a_.k)),
     // Wij_(1.0/(1.0/a_.W() + 1.0/b_.W()))
-    eij_(abs(a.z()*b.z())*sqr(a.e)/(4.0*a.pi*a.eps0*a.k)),
-    Wij_(1.0/(1.0/a.W() + 1.0/b.W()))
+    eij_(abs(a.z()*b.z())*sqr(a.e)/(4.0*Foam::Ion::pi*Foam::Ion::eps0*Foam::Ion::k)),
+    Wij_(inv(inv(a.W()) + inv(b.W())))
 {
 }
+
+/*
 */
 
 
diff --git a/diffusivityModel/Coulomb/Coulomb.H b/diffusivityModel/Coulomb/Coulomb.H
index 2279478..a9f3914 100644
--- a/diffusivityModel/Coulomb/Coulomb.H
+++ b/diffusivityModel/Coulomb/Coulomb.H
@@ -53,6 +53,7 @@ class Ostream;
 
 // Forward declaration of friend functions and operators
 class Coulomb;
+class Electron;
 Istream& operator>>(Istream&, Coulomb&);
 Ostream& operator<<(Ostream&, const Coulomb&);
 
@@ -95,6 +96,12 @@ public:
         //- Construct from components
         Coulomb(const Ion& a, const Ion& b);
 
+        //- Construct from components
+        Coulomb(const Electron& a, const Ion& b);
+
+        //- Construct from components
+        Coulomb(const Electron& a, const Electron& b);
+
         //- Construct from Istream
         Coulomb(Istream&);
 
diff --git a/diffusivityModel/CrossSection/CrossSection.C b/diffusivityModel/CrossSection/CrossSection.C
new file mode 100644
index 0000000..26612f4
--- /dev/null
+++ b/diffusivityModel/CrossSection/CrossSection.C
@@ -0,0 +1,95 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2016 OpenFOAM Foundation
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM 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 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM 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 OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "CrossSection.H"
+
+#include "error.H"
+#include "scalarMatrices.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+
+Foam::scalarField Foam::CrossSection::vec((M+1), 0.0);
+
+
+// * * * * * * * * * * * * * Static Member Functions * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::CrossSection::CrossSection(const Electron& a, const Neutral& b)
+:
+    a_(a),
+    b_(b),
+    b11_((M+1), 0.0)
+{
+    b_.name();
+    if (a_.isTarget(b_.name()))
+    {
+        b11_ = a_.DejFitCoefs(b_.name());
+    }
+    else
+    {
+        b11_[0] = VGREAT;
+    }
+}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+Foam::CrossSection::~CrossSection()
+{}
+
+
+// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
+
+
+
+// * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * * //
+
+void Foam::CrossSection::operator=(const CrossSection& rhs)
+{
+    // Check for assignment to self
+    if (this == &rhs)
+    {
+        FatalErrorInFunction
+            << "Attempted assignment to self"
+            << abort(FatalError);
+    }
+}
+
+// * * * * * * * * * * * * * * Friend Functions  * * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * Friend Operators * * * * * * * * * * * * * * //
+
+
+// ************************************************************************* //
diff --git a/diffusivityModel/CrossSection/CrossSection.H b/diffusivityModel/CrossSection/CrossSection.H
new file mode 100644
index 0000000..e1b0ec7
--- /dev/null
+++ b/diffusivityModel/CrossSection/CrossSection.H
@@ -0,0 +1,216 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2016 OpenFOAM Foundation
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM 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 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM 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 OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Class
+    Foam::CrossSection
+
+Description
+
+SourceFiles
+    CrossSectionI.H
+    CrossSection.C
+    CrossSectionIO.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef CrossSection_H
+#define CrossSection_H
+
+#include "scalar.H"
+#include "scalarField.H"
+#include "Electron.H"
+#include "Neutral.H"
+#include "Interaction.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+// Forward declaration of classes
+class Istream;
+class Ostream;
+
+// Forward declaration of friend functions and operators
+class CrossSection;
+Istream& operator>>(Istream&, CrossSection&);
+Ostream& operator<<(Ostream&, const CrossSection&);
+
+
+/*---------------------------------------------------------------------------*\
+                         Class CrossSection Declaration
+\*---------------------------------------------------------------------------*/
+
+class CrossSection
+    : public Interaction
+{
+    // Private data
+    //
+        //- Highest polynomial order of diffusivity fitting formular
+        static constexpr label M = 7;
+
+        //- Collision participant ion a
+        const Electron &a_;
+
+        //- Collision participant neutral b
+        const Neutral &b_;
+
+        //- p * Dej Fit Coefficient
+        scalarField b11_;
+
+        //- Buffer for polynomial feature
+        static scalarField vec;
+
+    // Private Member Functions
+
+        //- Disallow default bitwise copy construct
+        CrossSection(const CrossSection&);
+
+        //- Disallow default bitwise assignment
+        void operator=(const CrossSection&);
+
+        // primary template
+        template <label Order>
+            struct UnivarPolyFeat
+            {
+                    static scalar transform (scalar x1, scalar *vec)
+                    {
+                        scalar highest = UnivarPolyFeat<Order-1>::transform(x1,vec) * x1;
+
+                        *(vec+Order) = highest;
+
+                        return highest;
+                    }
+            };
+
+        // convenience function
+        inline void transform (scalar x1, scalar *vec)
+        {
+            UnivarPolyFeat<M>::transform(x1,vec);
+        }
+
+        // primary template
+        template <label N>
+            struct ScalarProduct
+            {
+                static scalar product (const scalar* first, const scalar* second)
+                {
+                    return ScalarProduct<N-1>::product(first + 1, second + 1)
+                        + *first * *second;
+                }
+            };
+
+        // convenience function
+        inline scalar scalarProduct (const scalar *x1, const scalar *x2)
+        {
+            return ScalarProduct<(M+1)>::product(x1,x2);
+        }
+
+
+public:
+
+    // Static data members
+
+
+    // Constructors
+
+        //- Construct null
+        CrossSection();
+
+        //- Construct from components
+        CrossSection(const Electron& a, const Neutral& b);
+
+        //- Construct from Istream
+        CrossSection(Istream&);
+
+        //- Construct as copy
+        // CrossSection(const CrossSection&);
+
+
+    //- Destructor
+    ~CrossSection();
+
+
+    // Member Functions
+
+        // Access
+
+        // Check
+
+        // Edit
+
+        // Write
+
+        inline scalar Dfit(const scalar T);
+
+
+        inline scalar D(const scalar p, const scalar T);
+
+
+    // Member Operators
+
+
+    // Friend Functions
+
+    // Friend Operators
+
+    // IOstream Operators
+
+        friend Istream& operator>>(Istream&, CrossSection&);
+        friend Ostream& operator<<(Ostream&, const CrossSection&);
+};
+
+// partial specialization as end criteria
+template <>
+class CrossSection::UnivarPolyFeat<0>
+{
+    public:
+        static scalar transform (scalar x1, scalar *vec)
+        {
+            *vec = 1.0;
+            return 1.0;
+        }
+};
+
+template <>
+struct CrossSection::ScalarProduct<1>
+{
+    static scalar product (const scalar* first, const scalar* second) {
+        return *first * *second;
+    };
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#include "CrossSectionI.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //
diff --git a/diffusivityModel/CrossSection/CrossSectionI.H b/diffusivityModel/CrossSection/CrossSectionI.H
new file mode 100644
index 0000000..f238997
--- /dev/null
+++ b/diffusivityModel/CrossSection/CrossSectionI.H
@@ -0,0 +1,71 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2016 OpenFOAM Foundation
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM 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 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM 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 OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+
+inline Foam::scalar Foam::CrossSection::Dfit(const scalar T)
+{
+    transform (sqrt(T), vec.data());
+    return scalarProduct (b11_.data(), vec.data());
+}
+
+
+inline Foam::scalar Foam::CrossSection::D(const scalar p, const scalar T)
+{
+    return Dfit (T) / p;
+}
+
+
+// * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * Friend Functions  * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * Friend Operators  * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * IOstream Operators  * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * Ostream Operator  * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+
+// ************************************************************************* //
diff --git a/diffusivityModel/Electron/Electron.C b/diffusivityModel/Electron/Electron.C
new file mode 100644
index 0000000..379dd1c
--- /dev/null
+++ b/diffusivityModel/Electron/Electron.C
@@ -0,0 +1,110 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2016 OpenFOAM Foundation
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM 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 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM 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 OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "Electron.H"
+
+#include "dictionary.H"
+#include "scalarList.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+// const dataType Foam::Electron::staticData();
+
+
+// * * * * * * * * * * * * * Static Member Functions * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::Electron::Electron(const dictionary& dict)
+:
+    Particle(dict),
+    fitDict_(dict.subDict("fitCoefs")),
+    collisionTargets_(fitDict_.lookup("species")),
+    DejFitCoefs_(collisionTargets_.size())
+{
+
+    forAll (DejFitCoefs_, idx)
+    {
+        
+        DejFitCoefs_.set(idx, new scalarList(fitDict_.lookup(collisionTargets_[idx])));
+
+        Info << DejFitCoefs_[idx] << endl;
+    }
+}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+Foam::Electron::~Electron()
+{}
+
+
+// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * * //
+
+void Foam::Electron::operator=(const Electron& rhs)
+{
+    // Check for assignment to self
+    if (this == &rhs)
+    {
+        FatalErrorInFunction
+            << "Attempted assignment to self"
+            << abort(FatalError);
+    }
+}
+
+// * * * * * * * * * * * * * * Friend Functions  * * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * Friend Operators * * * * * * * * * * * * * * //
+
+Foam::Ostream& Foam::operator<<(Ostream& os, const Electron& st)
+{
+    os  << static_cast<const Particle&>(st); //  << tab
+        /*
+        << st.alpha_ << tab
+        << st.C6_ << tab
+        << st.Zrot_ << tab
+        << st.n_ << tab
+        << st.rctTarget_ << tab
+        << st.Arct_ << tab
+        << st.Brct_;
+        */
+
+    os.check("Ostream& operator<<(Ostream& os, const specie& st)");
+    return os;
+}
+
+
+// ************************************************************************* //
diff --git a/diffusivityModel/Electron/Electron.H b/diffusivityModel/Electron/Electron.H
new file mode 100644
index 0000000..8488cff
--- /dev/null
+++ b/diffusivityModel/Electron/Electron.H
@@ -0,0 +1,153 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2016 OpenFOAM Foundation
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM 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 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM 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 OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Class
+    Foam::Electron
+
+Description
+
+SourceFiles
+    ElectronI.H
+    Electron.C
+    ElectronIO.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef Electron_H
+#define Electron_H
+
+#include "Particle.H"
+#include "hashedWordList.H"
+#include "scalarList.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+// Forward declaration of classes
+class Istream;
+class Ostream;
+
+// Forward declaration of friend functions and operators
+class Electron;
+Istream& operator>>(Istream&, Electron&);
+Ostream& operator<<(Ostream&, const Electron&);
+
+
+/*---------------------------------------------------------------------------*\
+                         Class Electron Declaration
+\*---------------------------------------------------------------------------*/
+
+class Electron
+:
+    public Particle
+{
+    // Private data
+
+        //- Resonant charge transfer targets
+        const dictionary &fitDict_;
+
+        //- Resonant charge transfer targets
+        hashedWordList collisionTargets_;
+
+        //- Resonant charge transfer targets
+        PtrList<scalarList> DejFitCoefs_;
+
+
+    // Private Member Functions
+
+        //- Disallow default bitwise copy construct
+        Electron(const Electron&);
+
+        //- Disallow default bitwise assignment
+        void operator=(const Electron&);
+
+
+public:
+
+    // Static data members
+
+        //- Static data staticData
+        // static const dataType staticData;
+
+
+    // Constructors
+
+        //- Construct from components
+        Electron(const dictionary& dict);
+
+        //- Construct from Istream
+        Electron(Istream&);
+
+        //- Construct as copy
+        // Electron(const Electron&);
+
+
+    //- Destructor
+    ~Electron();
+
+
+    // Member Functions
+
+        // Access
+        inline bool isTarget(const word &target) const;
+
+        inline const scalarList& DejFitCoefs(const word &target) const;
+
+        // Check
+
+        // Edit
+
+        // Write
+
+
+    // Member Operators
+
+        // void operator=(const Electron&);
+
+
+    // Friend Functions
+
+    // Friend Operators
+
+    // IOstream Operators
+
+        friend Istream& operator>>(Istream&, Electron&);
+        friend Ostream& operator<<(Ostream&, const Electron&);
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#include "ElectronI.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //
diff --git a/diffusivityModel/Electron/ElectronI.H b/diffusivityModel/Electron/ElectronI.H
new file mode 100644
index 0000000..7264c80
--- /dev/null
+++ b/diffusivityModel/Electron/ElectronI.H
@@ -0,0 +1,74 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2016 OpenFOAM Foundation
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM 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 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM 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 OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+
+inline bool Foam::Electron::isTarget(const word &target)
+    const
+{
+    return collisionTargets_.contains(target);
+}
+
+
+
+inline const Foam::scalarList& Foam::Electron::DejFitCoefs(const word &target)
+    const
+{
+    return DejFitCoefs_[collisionTargets_[target]];
+}
+
+
+
+// * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * Friend Functions  * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * Friend Operators  * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * IOstream Operators  * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * Ostream Operator  * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+
+// ************************************************************************* //
diff --git a/diffusivityModel/diffusivityModel/diffusivityModel.C b/diffusivityModel/diffusivityModel/diffusivityModel.C
index 41f3afe..7a066d8 100644
--- a/diffusivityModel/diffusivityModel/diffusivityModel.C
+++ b/diffusivityModel/diffusivityModel/diffusivityModel.C
@@ -30,11 +30,13 @@ License
 #include "volFieldsFwd.H"
 #include "scalarMatrices.H"
 #include "Particle.H"
+#include "Electron.H"
 #include "Neutral.H"
 #include "Ion.H"
 #include "Stockmayer.H"
 #include "Coulomb.H"
 #include "N64.H"
+#include "CrossSection.H"
 
 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
@@ -114,6 +116,8 @@ Foam::diffusivityModel::diffusivityModel(const psiReactionThermo& thermo)
     D_(thermo_.composition().species().size()),
     neutrals_(thermo_.composition().species().size()),
     ions_(thermo_.composition().species().size()),
+    ecs_(thermo_.composition().species().size()),
+    ens_(thermo_.composition().species().size()),
     nns_(thermo_.composition().species().size()*thermo_.composition().species().size()),
     ccs_(thermo_.composition().species().size()*thermo_.composition().species().size()),
     cns_(thermo_.composition().species().size()*thermo_.composition().species().size())
@@ -163,7 +167,8 @@ Foam::diffusivityModel::diffusivityModel(const psiReactionThermo& thermo)
                     << "Electron should be the first species in the list"
                     << abort(FatalError);
             }
-            // new Electron (tranDict);
+
+            electron_.set(new Electron (tranDict));
         }
         // Ions
         else if (zi != 0)
@@ -199,9 +204,10 @@ Foam::diffusivityModel::diffusivityModel(const psiReactionThermo& thermo)
     neutrals_.resize(nNeutral);
     nns_.resize(nNeutral*(nNeutral+1)/2);
 
-    ccs_.resize((nIon+1)*(nIon+2)/2 - 1);
+    ccs_.resize((nIon+1)*(nIon)/2 - 1);
     cns_.resize(nNeutral*nIon);
-    // ens_.resize(nNeutral);
+    ecs_.resize(nIon+1);
+    ens_.resize(nNeutral);
     // ee_;
 
     forAll(species_, i)
@@ -253,6 +259,24 @@ Foam::diffusivityModel::diffusivityModel(const psiReactionThermo& thermo)
     }
 
     label iPair = 0;
+
+    ecs_.set(iPair, new Coulomb(electron_(), electron_()));
+    iPair++;
+
+    forAll(ions_, i)
+    {
+        ecs_.set(iPair, new Coulomb(electron_(), ions_[i]));
+        iPair++;
+    }
+
+    iPair = 0;
+    forAll(neutrals_, i)
+    {
+        ens_.set(iPair, new CrossSection(electron_(), neutrals_[i]));
+        iPair++;
+    }
+
+    iPair = 0;
     forAll(ions_, i)
     {
         for (label j = i; j < ions_.size(); j++)
@@ -448,34 +472,35 @@ void Foam::diffusivityModel::correct()
         }
 
         // Electron - Electron
+        label idx = 0;
 
-        // muI[0] = nns_[idx].mu(pi,Ti);
-        muI[0] = SMALL;
+        muI[0] = ecs_[idx].mu(pi,Ti,rhoQc2i);
+        // muI[0] = SMALL;
 
-        // Dii[0] = nns_[idx].D(pi,Ti);
-        Dii[0] = SMALL;
+        Dii[0] = ecs_[idx].D(pi,Ti,rhoQc2i);
+        // Dii[0] = SMALL;
         Dij(0,0) = Dii[0];
 
-        label idx = 0;
         // Electron - Ions
+        idx = 1;
         for (label J = 0; J < ions_.size(); J++)
         {
             label j = J + 1;
             // Calculate Dij
-            // Dij(0,j) = nns_[idx].D(pi,Ti);
-            Dij(0,j) = SMALL;
+            Dij(0,j) = ecs_[idx].D(pi,Ti,rhoQc2i);
+            // Dij(0,j) = SMALL;
             Dij(j,0) = Dij(0,j);
             idx++;
         }
 
-        idx = 0;
         // Electron - Neutrals
+        idx = 0;
         for (label J = 0; J < neutrals_.size(); J++)
         {
             label j = J + ions_.size() + 1;
             // Calculate Dij
-            // Dij(0,j) = nns_[idx].D(pi,Ti);
-            Dij(0,j) = SMALL;
+            Dij(0,j) = ens_[idx].D(pi,Ti);
+            // Dij(0,j) = SMALL;
             Dij(j,0) = Dij(0,j);
             idx++;
         }
diff --git a/diffusivityModel/diffusivityModel/diffusivityModel.H b/diffusivityModel/diffusivityModel/diffusivityModel.H
index 9c94492..d76f4aa 100644
--- a/diffusivityModel/diffusivityModel/diffusivityModel.H
+++ b/diffusivityModel/diffusivityModel/diffusivityModel.H
@@ -46,11 +46,13 @@ namespace Foam
 {
 
 // Forward declaration of classes
+class Electron;
 class Neutral;
 class Ion;
 class Stockmayer;
 class Coulomb;
 class N64;
+class CrossSection;
 
 // Forward declaration of friend functions and operators
 class diffusivityModel;
@@ -77,7 +79,7 @@ class diffusivityModel
         autoPtr<volScalarField> k_;
 
         //- Electron object
-        // autoPtr<Electron> electron_;
+        autoPtr<Electron> electron_;
 
         //- Ion object list
         PtrList<Ion> ions_;
@@ -85,13 +87,19 @@ class diffusivityModel
         //- Neutral object list
         PtrList<Neutral> neutrals_;
 
+        //- Coulomb potential list
+        PtrList<Coulomb> ecs_;
+
+        //- Momentum transfer cross section list
+        PtrList<CrossSection> ens_;
+
         //- Stockmayer potential list
         PtrList<Stockmayer> nns_;
 
-        //- Stockmayer potential list
+        //- Coulomb potential list
         PtrList<Coulomb> ccs_;
 
-        //- Stockmayer potential list
+        //- (n,6,4) potential list
         PtrList<N64> cns_;