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Edwin E. Quashie edited For_the_off_channeling_trajectory__.tex
over 8 years ago
Commit id: 1c5d7733f7e1c1d67bb181f4619a7f8ec3303a39
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For the off-channeling trajectory, the procedure for computing the $S_\text{e}$ is depicted in Fig. \ref{fig:fit_off_channel}.
The sharp peaks shows when the proton is in the vicinity of a host $\mathrm{Cu}$ atom,
while the smaller peaks and flatter regions indicates that the proton is not very close to any host atom.
To obtain the
electronic stopping $S_\text{e}$ we compute the slopes of the curves by a linear fit of the form $y = a + bx$ (black lines) using our data from $x > 5~a_0$ (to eliminate the transient region) to a given maximum position of $x$ determined by minimizing reentrancy in the periodic supercell into the initial position.
The slope ($b$) gives the electronic stopping for this off-channeling case.
%We have displayed the procedure used in obtaining the electronic stopping for the off-channeling trajectory case in Figure \ref{fig:fit_off_channel}.%