\begin{table}%t4
\caption{\label{si:SRIM}Ion penetration depth (range), number of displaced lattice
atoms per ion $N_{{\rm Disp.}}/{\rm ion}$, and the minimum
required dose for full amorphization of the upper layer (of
thickness equal to the ion penetration depth) of pyroxene and
enstatite by proton and He-ion irradiation at various energies. }
\small%\centering
$$
\newcolumntype{+}{D{.}{.}{-1}}
\begin{tabular}{l|+@{ }+|+@{ }+@{ }+|+@{ }+@{ }+}
\hline \hline
\multirow{3}{*}{\begin{sideways}Ion\end{sideways}}&\multicolumn{1}{c}{Stellar Wind}    &\multicolumn{1}{c|}{Particle}      &   \multicolumn{3}{c|}{Pyroxene, $\rho=1.2\times 10^{23}\frac{{\rm atoms}}{{\rm cm}^3}$}      &   \multicolumn{3}{c}{Enstatite, $\rho=9.6\times 10^{22}\frac{{\rm atoms}}{{\rm cm}^3}$}\\
&\multicolumn{1}{c}{Speed}&\multicolumn{1}{c|}{Energy}&\multicolumn{1}{c}{Range}&\multicolumn{1}{c}{\multirow{2}{*}{$\frac{N_{{\rm Disp.}}}{\textrm{ion}}$}}&\multicolumn{1}{c|}{Dose}&\multicolumn{1}{c}{Range}&\multicolumn{1}{c}{\multirow{2}{*}{$\frac{N_{{\rm Disp.}}}{\textrm{ion}}$}}&\multicolumn{1}{c}{Dose}\\
&\multicolumn{1}{c}{[km~s$^{-1}$]}&\multicolumn{1}{c|}{[keV]}&\multicolumn{1}{c}{[nm]}&&\multicolumn{1}{c|}{$\times10^{16}~\frac{{\rm ions}}{{\rm cm}^2}$}&\multicolumn{1}{c}{[nm]}&&\multicolumn{1}{c}{$\times10^{16}~\frac{{\rm ions}}{{\rm cm}^2}$}\\
\hline \multirow{8}{*}{\begin{sideways}p$^+$\end{sideways}}
&   300 &   0.5 &   8.3 &   0.8 &   30.7    &   9.4 &   0.8 &   28.2    \\
&   400 &   0.8 &   12  &   1.5 &   23.7    &   10.7    &   1.5 &   17.1    \\
&   450 &   1.1 &   15.8    &   2.1 &   22.3    &   17.3    &   2.1 &   19.8    \\
&   500 &   1.3 &   17.7    &   2.4 &   21.8    &   19.6    &   2.5 &   18.8    \\
&   600 &   1.9 &   24.4    &   3.3 &   21.9    &   26.6    &   3.3 &   19.3    \\
&   700 &   2.6 &   31.7    &   4   &   23.5    &   35.5    &   4.1 &   20.8    \\
&   800 &   3.3 &   38.8    &   4.7 &   24.4    &   43  &   4.8 &   21.5    \\
&   1384    &   10.0    &   97.2    &   8.2 &   35.1    &   107.1   &   8.1 &   31.7    \\
&   3094    &   50.0    &   332.7   &   12.6    &   78.2    &   364.5   &   12.4    &   70.6    \\
\hline \multirow{7}{*}{\begin{sideways}He\end{sideways}}
&   300 &   1.9 &   14.4    &   20.1    &   2.1 &   15.5    &   19.4    &   1.9 \\
&   400 &   3.3 &   23.4    &   31.1    &   2.2 &   26.3    &   31.1    &   2.0 \\
&   450 &   4.2 &   29.1    &   36.9    &   2.3 &   33.6    &   36.6    &   2.2 \\
&   500 &   5.2 &   35.7    &   42.6    &   2.5 &   40.1    &   42.3    &   2.3 \\
&   600 &   7.5 &   50.5    &   53.3    &   2.8 &   56.5    &   52.8    &   2.6 \\
&   700 &   10.2    &   67.5    &   63.8    &   3.1 &   74.3    &   62.7    &   2.8 \\
&   800 &   13.3    &   84.9    &   72.7    &   3.5 &   95.5    &   71  &   3.2 \\
&   1553    &   50.0    &   263.4   &   116.2   &   6.7 &   292 &   113 &   6.2 \\
\hline
\end{tabular} 
$$
\end{table}