High-spin study of111I

A level scheme is presented for ${}_{53}^{111}\mathrm{I},$ populated by the ${}^{58}\mathrm{Ni}{(}^{58}\mathrm{Ni},\ensuremath{\alpha}p)$ reaction. A backed-target experiment, at a low beam energy of 210 MeV, was performed using the JUROSPHERE spectrometer, while a thin-target experiment at 250 MeV was performed using the GAMMASPHERE spectrometer in conjunction with the MICROBALL charged-particle detector array. The new level scheme fits well the systematics of light iodine nuclei and provides evidence for a terminating band at the highest spins. Low-lying transitions previously assigned to ${}^{111}\mathrm{I}$ could not be confirmed.