svensson_1984_eqn_1

\begin{matrix}

\mu_+ + \mu_- + 2 m c^2 = 0

\\

-k T \ln \left[ \frac{2 e}{n_- \hbar^3} \left(2 \pi m k T \right )^{3/2} \right ]
-k T \ln \left[ \frac{2 e}{n_+ \hbar^3} \left(2 \pi m k T \right )^{3/2} \right ] = \frac{2 m c^2}{k T}

\\

n_+ n_- = 4 e^2 \left( 2 \pi \right )^3 \lambda^{-6} \exp \left( - \frac{2}{\theta} \right ) \theta^3

\end{matrix}