deletions | additions       diff --git a/section_Computational_and_Theoretical_Details__.tex b/section_Computational_and_Theoretical_Details__.tex  index eaf3a0f..ca0fc97 100644  --- a/section_Computational_and_Theoretical_Details__.tex  +++ b/section_Computational_and_Theoretical_Details__.tex 
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The total electronic energy ($E$) of the electronic system changes as a function of the projectile position ($x$) since the projectile deposits energy into the electronic system as it moves through the host atoms. The increase of $E$ as a function of projectile displacement $x$ enables us to extract the electronic stopping power  \begin{equation}  S_e(x) S_\text{e}(x)  = \frac{dE(x)}{dx} \frac{\mathrm{d}E(x)}{\mathrm{d}x}  \label{eq:stopping}   \end{equation}  $S_\text{e}(x)$ has the dimension of a force $(E_\text{h}/a_0)$ and it is the drag force acting on the projectile.