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[en] The reaction ²³⁴U(d-vector, t)²³³U was measured at the Munich Q3D magnetic spectrometer with a polarized deuteron beam. The beam energy was 22 MeV, and a vector polarization of the deuterons of 80% was achieved. Angular distributions of the reaction cross section and analyzing power at seven angles between 5 deg. and 35 deg. were analyzed. Spin and parity assignments for 33 states were determined by comparison with results from distorted wave Born approximation (DWBA) calculations. Based on these assignments and energy systematics, the observed states were sorted into rotational bands. The Nilsson configurations of the bands are identified by examining the population strengths within each band. Two rotational bands with Nilsson configurations 1/2[501] and 3/2[501] could be identified for the first time.

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[en] Post-accelerated isomerically purified radioactive beams, available at the CERN On-Line Isotope Mass Separator facility using the resonant ionization laser technique, have been used to study the Coulomb excitation of the I^π = 3^- state in ⁷⁰Cu (Z=29, N=41). While first results using a I^π=6^- beam were reported previously, the present complementary experiment allows us to complete the study of the multiplet of states (3^-, 4^-, 5^-, 6^-) arising from the π2p_3/2ν1g_9/2 configuration. Besides the known γ-ray transition deexciting the 4^- state, a ground-state γ ray of 511(3) keV was observed for the first time and was unambiguously associated with the 5^- state deexcitation. This observation fixes the energy, spin, and parity of this state, completing the low-energy level scheme of ⁷⁰Cu. B(E2) values for all possible E2 transitions within the multiplet were determined. A comparison with large-scale shell model calculations using different interactions and valence spaces shows the importance of proton excitation across the Z=28 shell gap and the role of the 2d_5/2 neutron orbital.