correct mu and epsilon

Doc/DevRef/Scattering.tex

@@ -259,7 +259,7 @@ the propagation of free neutrons becomes spin dependent.
 Therefore the scalar wavefunction of \cref{SnScalar}
 must be replaced by spinor $\v\Psi$.
 \index{Spinor}%
-The magnetic moment~$\mu$ of the neutron
+The magnetic moment~$\mu_n$ of the neutron
 \nomenclature[1μ024 2n000]{$\mu_\text{n}$}{Magnetic moment of the neutron}
 \index{Neutron!magnetic moment}%
 \index{Magnetic moment!neutron}%
@@ -271,15 +271,11 @@ With the coupling term, the Schrödinger equation~\cref{ESchrodi1}
 becomes
 \begin{equation}\label{EHSchrodi}
   \left\{-\frac{\hbar^2}{2m}\Nabla^2+V(\r)
-         +\mu\v{B}(\r)\bm{\hat\sigma}-\hbar\omega\right\}
+         +\mu_n\v{B}(\r)\bm{\hat\sigma}-\hbar\omega\right\}
       \v\Psi(\r) = 0,
 \end{equation}
 \nomenclature[1ψ150 2r040]{$\v\Psi(\r)$}{Stationary coherent spinor wavefunction}%
-where $\mu_0$ is the vacuum permeability,
-\nomenclature[1μ024 00]{$\mu_0$}{Vacuum permeability, $4\pi\cdot10^{-7}$ Vs/Am}%
-\index{Permeability}%
-\index{Magnetic permeability}%
-and ${\bm{\hat\sigma}}$ is the Pauli vector, composed of the three Pauli matrices.
+where ${\bm{\hat\sigma}}$ is the Pauli vector, composed of the three Pauli matrices.
 \nomenclature[1σ04]{$\bm\sigma$}{Pauli
     vector, composed of the three Pauli matrices: $\bm\sigma=(\sigma_x,\sigma_y,\sigma_z)$}%
 \index{Pauli vector}%
@@ -291,6 +287,10 @@ We introduce the reduced field
 \nomenclature[2h050 2r040]{$\v{b}(\r)$}{Rescaled
    field $\v{b}=(m\mu/2\pi\hbar^2)\v{B}$}%
 \index{Magnetizing field!reduced}%
+where $\mu_0$ is the vacuum permeability,
+\nomenclature[1μ024 00]{$\mu_0$}{Vacuum permeability, $4\pi\cdot10^{-7}$ Vs/Am}%
+\index{Permeability}%
+\index{Magnetic permeability}%
 to rewrite the Schrödinger equation in analogy to~\cref{ESchrodi2} as
 \index{Schrodinger@Schrödinger equation!macroscopic}%
 \begin{equation}\label{ESchrodi2H}
@@ -440,7 +440,7 @@ the time average is
   \braket{\v S} = \frac{1}{4}\braket{\v E(\r) \times \v H(\r)^* + \text{c.~c.}}.
 \end{equation}
 \nomenclature[2c000 2c000]{$\text{c.~c.}$}{Complex conjugate}%
-We specialize to vacuum with $\TENS\mu(\r)=1$ and $\TENS\eps(\r)=1$,
+We specialize to vacuum with $\TENS\eps(\r)=1$,
 and obtain
 \begin{equation}
   \braket{\v S}