Stopping cross sections of TiO2 for H and He ions

Stopping cross sections of TiO2 films were measured for H and He ions in the energy intervals 200–1500 keV and 250–3000 keV, respectively, using the Rutherford backscattering technique. Theoretical calculations were performed by means of two versions of the dielectric formalism and a non-linear model. Good agreement is found between the present experimental data and the theoretical results at intermediate and high energies, and also with the very limited experimental information available in the literature.We thank the financial support from the Spanish Ministerio de Economía y Competitividad (Projects FPA2009-14091-C02-01 and FIS2010-17225) and the European Regional Development Fund. This work was partially supported by the following Argentinian institutions: Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT)