The Rianbow Ion-Solid Interaction Potential

Recent rapid development of the nanoscience and the nanotechnology imposes new challenges with respect to the basic assumptions considering ion-solid collisions: the energy loss averaging over the impact parameters, the equilibrium charge state distribution and the use of ZBL universal ion-atom interaction potential. Petrović et al. presented the high-resolution transmission measurements of the angular distributions of medium energy protons (0.7 – 2 MeV) channeled through a 55 nm thick (001) silicon membrane. They showed that the universal ZBL proton-silicon interaction potential cannot accurately describe the experimental results. As a result, they obtained the rainbow interaction potential (RIP), which approximate ZBL potential for the small impact parameters and the Moliere potential for the large ones. The RIP was constructed by introducing the morphological method based on the crystal rainbow effect .