Levels of Ir-194 were studied using neutron capture and (d,p) reaction
spectroscopy. A pair spectrometer was used to measure the high-energy
gamma-ray spectrum from thermal-neutron capture in an enriched Ir-193
target over the energy range 4640-6100 keV. From the same reaction, l
ow-energy gamma-radiation was studied using curved-crystal spectromete
rs, and conversion electrons were observed with magnetic spectrometers
. Prompt and delayed gamma gamma-coincidences were measured using semi
conductor and scintillation detectors. Averaged resonance capture meas
urements were performed with 2 keV and 24 keV neutrons for primary tra
nsitions leading to excitation energies from 0 to 580 keV. Using 22 Me
V deuterons, the Ir-193(d,p) high resolution spectra were observed wit
h a magnetic spectrograph. The deduced nuclear level scheme of Ir-194
includes 38 levels connected by 184 transitions. Unambiguous spins and
parities were determined for 25 levels. The rotor-plus-particle model
was used for the interpretation of the level scheme assuming a strong
mixing for Nilsson configurations having identical parities and K qua
ntum numbers. IBFFM model calculations were performed and the obtained
results were compared with the experimental level scheme. (C) 1998 El
sevier Science B.V.