Ion induced luminescence from sapphire irradiated with swift cluster ion beams; Cluster ion size and energy dependences

Shibata, Hiromi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Narumi, Kazumasa; Taguchi, Mitsumasa

This study is to elucidate the characteristics of the interaction between energetic cluster ions and solids by means of measuring luminescence from solid surfaces irradiated with cluster ions. We report present results of luminescence measurement for the sapphire target irradiated with carbon cluster ions. Luminescent spectra from sapphire induced by 0.25-3.0 MeV/atom (21-252 keV/u) C-C ion irradiation were measured in the wavelength range of 250-800 nm as a function of ion fluence at room temperature. The experimental results show the same tendency as a calculation of stopping power theory. This suggests that luminescence caused by irradiation defects directly relates to the stopping power of incident cluster ion.