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Alfredo A. Correa edited Fig_ref_fig_energy_distance_shows__.tex
almost 8 years ago
Commit id: 6ec950b648f91b1ab04a87d2b8d2cfc295faab58
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Fig. \ref{fig:energy_distance} shows the total electronic energy of the $\mathrm{H^+ + Cu}$ system as a function of position for various projectile velocities for the hyper-channeling case.
At
a lower velocities regime, the energy transfer is
rather small which supports smaller, approaching the adiabatic
behavior.
But behavior, while at higher velocities
aside (aside oscillations of the total energy with the position of the
projectile, projectile) the total energy of the system increases
linearly with time.
After the projectile travels some short distance in the crystals ($\sim 5~a_0$) the increase in total energy of the system stabilizes
at to a steady rate.
At that stationary state, the $S_\text{e}$ is then extracted from the average slope of the total energy vs. projectile displacement; these represent the energy gained by the target or the energy loss of the projectile.
Hence a stationary regime is reached and the difference in energy ($\Delta E$) remains constant for the corresponding lattice positions of the projectile.