Alfredo A. Correa edited Figure_ref_fig_stopping_power_shows__.tex  over 8 years ago

Commit id: 3b598141a3db05f0fd73436bddced605ea8a1201

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For the off-channeling case, there is a better agreement between the our $S_\text{e}$ results with the \textsc{Srim} data in most of the range.   In experiments, where trajectories are not necessarely finely controlled, the projectile does indeed explore core regions of the host atoms, and that is presumably why off-channeling simulation are a better representation for the most common experiments \cite{Dorado_1993}.   At higher velocities ($v > 4 ~\mathrm{a.u.}$) further disagreement stems from combined effect of the lack of explicit core electrons in the simulation and also size effects, as excitations of long wavelength plasma oscillation is constrained by the simulation supercell \cite{Schleife_2015}.   It is clear that a larger cell and eventually  the inclusion of more core electrons would be necessary to obtain better agreement in this region. Although experimental values have considerable vertical spread,   our calculated stopping power is on the low side for most of the points and also below the fitted by \textsc{Srim} model \cite{Ziegler_2010}.