High-spin states have been populated in I-117(53) via the Zr-90(P-31,2p2n)
reaction at 150 MeV, using the EUROGAM II gamma-ray spectrometer to record
high-fold gamma-ray coincidences, A quadruples gamma-ray analysis (gamma(4)
) has been used to extend the known level scheme, In addition to several al
igned noncollective states, a new high-spin band showing characteristics of
smooth termination has been established at and linked into the low-spin le
vel scheme. Its structure has been inferred through comparison with cranked
Nilsson-Strutinsky calculations. [S0556-2813(99)03804-2].