Excited states in ' Bi were populated by the " %'(' F,6n) and ' Tm( Si,4n) reactions. The subsequent y-ray emission was studied using in-beam spectroscopic methods including excitation functions, y-ray angular distributions, y-y-t coincidence, conversion electron, and pulsed-beam-y timing measurements.Three isomeric states were located in '9~Bi[ J,tq2, E]: [( 2 ), 32+2 ns, 888 keV];[( 2' ), 80+10 ns, 2196 keV]; and [( '2 ), 750250 ns, 2311+5keV]. The structure of the observed states is interpreted within the shell-model framework. Systematic features of excited state energies and transition rates in the odd-A bismuth isotopes are discussed. A comparison of intruder states analogous to those in odd-A antimony nuclei of the Z =50 transition region is made.

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Several rotational bands built on one-and three-quasiparticle configurations have been populated in the odd-neutron '"Ce nucleus following the " Sn("0,4n) reaction. Both signature components of bands built on the [514] -and [400] -' orbitals were observed. At low spins, the yrast band, based on a neutron from the upper h]»2 midshell, shows a large signature splitting (~100 keV), indicating a significant triaxial deformation (y --20'). Four AI =1 bands were observed at higher spins based on three-quasiparticle configurations.Strong M1 transitions and the lack of signature splitting imply that these bands are near prolate (y-0') and thus contain one or more aligned h]»2 protons from the lower midshell. In two of these bands, weak E2 crossover transitions were seen; measured B (M1;I~I -1)/B (E2;I~I -2) ratios were used to assign configurations. In addition, a AI =2 band with an enhanced moment of inertia was observed most probably built on the prolate vii3/i[irhi, /t]' configuration. Only one signature component of this configuration was seen because of the maximal signature splitting of the P-driving i,3 /pneutron orbital (Q = -').