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High-spin states in Kr were studied using the Cu( O,p3n) reaction at 65 MeV at the Florida State University Tandem-LINAC facility. Prompt p-p coincidences were observed using the Pitt-FSU detector array. Twelve new states were found, along with 19 new transitions. The yrast positive-and negative-parity bands were extended up to spins of (45/2+) and (31/2 ), respectively. Spin assignments were made based on directional correlation of oriented nuclei ratios whenever possible. A cranked-shell-model analysis shows some indication for a second band crossing in the positive-parity band at hu 0.75 MeV. This crossing, probably due to an aligned g9/Q neutron pair, occurs with a much larger band interaction than the Srst y9gq proton crossing. An increase in signature splitting above ho 0.75 MeV and a return of large alternations in the B(M1)/B(E2) ratio is consistent with the theoretically predicted return to a nearly oblate shape.PACS number(s): 23.20.Lv, 27.50.+e, 29.30.Kv

High-spin states of the odd-odd nucleus Br were investigated via the reactions Ni(' F,2pn) Br and Cu(' C, 3n) Br at beam energies of 62 and 50 MeV, respectively. On the basis of coincidence data new levels have been introduced and partly grouped into rotational bands, Some of these new states decay to known levels of negative-parity bands built on both the ground state and the long-lived 4 isomer. Thus, an excitation energy of 13.8 keV has been deduced for the long-lived isomer in " Br. The level sequences observed are interpreted in terms of Nilsson configurations in conjunction with collective excitations.

High-spin states of ' Nd have been studied using the ' Te(' 0,5n) reaction at 85 MeV. The yrast states observed up to a tentatively assigned spin of 45//2 can be described in a remarkably simple way by the weak coupling of an f7/z neutron to the ' Nd core nucleus. Our results demonstrate that ' 3Nd is one of the best known examples of weak coupling at high angular momentum.PACS number(s): 23.20.Lv, 21.60.Cs, 27.60.+jThe N= 83 isotopes are some of the best candidates in the Periodic Table for weak coupling. Low-energy states in the semimagic N=82 nuclei are generated primarily by excitations of their valence protons (for example, see [1,2]). Consequently, the valence neutron of an N = 83 nucleus should not interfere with the excited states of its N = 82 core, and the coupling between the valence neutron and the core may be