RAPISARDA, E.; STEFANESCU, I.; L. BALABANSKI, D.; BASTIN, B.; BLAZHEV, A.; BREE, N.; DANCHEV, M.; BRUYNEEL, B.; DAVINSON, T.; DELAHAYE, P.; DIRIKEN, J.; EBERTH, J.; GEORGIEV, G.; FEDOROV, D.; N. FEDOSSEEV, V.; FIORI, E.; FRANCHOO, S.; FRANSEN, C.; GEIBEL, K.; GLADNISHKI, K.; HADYNSKA, K.; HESS, H.; HEYDE, K.; HUYSE, M.; IVANOV, O.; IWANICKI, J.; JOLIE, J.; KALKUEHLER, M.; KROLL, T.; KRUCKEN, R.; KOSTER, U.; LO BIANCO, G.; LOZEVA, Radomira; A. MARSH, B.; NARDELLI, S.; NOWACKI, F.; PATRONIS, N.; REITER, P.; SEIDLITZ, M.; SIEJA, K.; SMIRNOVA, N.; SREBRNY, J.; VAN DE WALLE, J.; VAN DUPPEN, P.; WARR, N.; WENANDER, F.; WIMMER, K.; WRZOSEK, K.; ZEMLYANOI, S.; ZIELINSKA, M.

doi:10.1103/PhysRevC.84.064323

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Physical Review C. 2011, vol. 84, p. 064323

American Physical Society

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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(pi) = 3(-) state in (70)Cu (Z = 29, N = 41). While first results using a I(pi) = 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 pi 2p(3)/(2)nu 1g(9/2) configuration. Besides the known gamma-ray transition deexciting the 4(-) state, a ground-state. 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 (70)Cu. 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.< Leer menos

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Coulomb excitation of the 3(-) isomer in (70)Cu

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