High-spin study of I-111 - art. no. 064320

A level scheme is presented for I-111(53), populated by the Ni-58(Ni-58, al pha p) reaction. A backed-target experiment, at a low beam energy of 210 Me V, was performed using the JUROSPHERE spectrometer, while a thin-target exp eriment at 250 MeV was performed using the GAMMASPHERE spectrometer in conj unction with the MICROBALL charged-particle detector array. The new level s cheme fits well the systematics of light iodine nuclei and provides evidenc e for a terminating band at the highest spins. Low-lying transitions previo usly assigned to I-111 could not be confirmed.