@@ -48,7 +48,8 @@ Angle $\psi$ between $\left| k_i \right>$ and $\left| Q \right>$, in units of \A
Angle $\xi$ between $\left| Q \right>$ and orientation vector $\left| a \right>$ (i.e. $ax$, $ay$, $az$), in units of rlu; $g_{ij}=\left| b_i \left> \right< b_j \right|$ is the covariant metric of the reciprocal lattice with basis $\left| b_i \right>$:
\begin{equation}\xi = \arccos\left( \frac{\left< Q | a \right> }{\sqrt{\left< Q | Q \right>}\sqrt{\left< a | a \right>}}\right) \end{equation}