The level structure of Sn-113 has been investigated. The data were obt
ained by in-beam gamma-ray spectroscopy using the reaction Mo-100(O-18
,5n)Sn-113 at 70 MeV performed at the OSIRIS gamma array in the Instit
ut fur Kernphysik FN Tandem accelerator. We report in this short note
the observation of two intruder type rotational bands in this nucleus.