deletions | additions       diff --git a/section_Introduction_The_interaction_of__.tex b/section_Introduction_The_interaction_of__.tex  index 2bca995..eb2bc01 100644  --- a/section_Introduction_The_interaction_of__.tex  +++ b/section_Introduction_The_interaction_of__.tex 
...
\cite{Komarov_2013,Patel_2003,Caporaso_2009,Odette_2005}.   When a fast ion moves through a solid, it loses kinetic energy due to the excitations of the target electrons and the path of their trajectory.   This energy-loss phenomenon plays an important role in many experimental studies involving radiation in solids, surfaces and nanostructures \cite{Chenakin_2006,Figueroa_2007,Markin_2008,Kaminsky_1965,Lehmann_1978,Sigmund_2014,Nastasi_1996}.   The complexity of describing the dynamic interaction between charged particles and solids has initiated a large amount ofresearch  both experimentally theoretical  and theoretically. experimental research.  In particular, the condensed matter community has introduced sophisticated computer simulation techniques with considerable success for this fundamentally non-adiabatic problem \cite{Echenique_1989}.