Ion-beam therapy: from electron production in tissue like media to DNA   damage estimations
  Radiation damage induced by ion beams is traditionally treated at different levels of theoretical approaches, for the different scales and mechanisms involved.We present here details of a combined approach that, from a method at a nanoscopic scale, attempts to merge with higher scales existing results, by tuning the analytical method employed when extended to larger scale and so yielding a consistent picture of the entire process. Results will show the possibility to get a good agreement with macroscale methods and, on the other hand, to produce a reliable electron energy spectra to be used for DNA damage estimations. 
Emanuele Scifoni, Eugene Surdutovich, Andrey Solov'yov, Igor   Pshenichnov, Igor Mishustin and Walter Greiner