New states and γ-transitions in 209Bi observed in the (3He, d*γγ)-subcoulomb-reaction
Institut für Kernphysik, Universität zu Köln, Zülpicher Str. 77, 50937, Köln, Deutschland
Published online: 15 June 2000
Single-particle states as well as collective states in the natural Bismuth isotope 209Bi were investigatedusing two Euroball Cluster detectors at the Cologne FN-tandem accelerator. The states were populated by the subcoulomb proton stripping reaction 208Pb(3He,d*γγ)209Bi at 20.5 MeV beam-energy. Forty-eight γ-transitions and 33 levels were observedfor the first time. Gamma-transitions up to an energy of 6.0 MeV were detected. The energy of the observed states were determined to an accuracy of about 0.3 keV.
PACS: 21.10.Pc Single-particle levels and strength function – / 23.20.Lv Gamma transitions and level energies – / 25.55.-e 3H-, 3He-, and 4He-induced reactions –
© Società Italiana di Fisica and Springer-Verlag, 2000