%info@http:://golem.fjfi.cvut.cz/wiki/root/GW4reports \def\GWslide{\slide{Spectroscopy}{ Radiation involving atoms and ions: \begin{itemize} \item {\bf Free-free} (free electrons in the field of ions) ... continuous spectrum - bremsstrahlung. \item {\bf Free-bound} (free electrons captured by an ion) .. continuous spectrum \item {\bf (GOLEM) Bound-bound} (electrons in an excited or ionized atoms) .. line spectrum \begin{itemize} \item Identification of the elements present in the plasma. \item Measurement of the impurity influx rates from walls and limiters \item Determination of total impurity concentrations. \item Investigations of transport processes by comparing measured impurity concentration profiles with transport models. \end{itemize} \end{itemize} \credit{Bartels:IPPlectures}{} }}