\begin_layout RomanList
item two
-\begin_inset Separator latexpar
-\end_inset
-
-
\end_layout
\begin_deeper
\end_inset
is initiated when the molecular ion S
-\begin_inset Formula $_{{\rm L}}$
+\begin_inset Formula $_{{\textrm{L}}}$
\end_inset
captures an electron with kinetic energy.