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The interest in studying nuclei in the 100 Sn region, in particular those " southeast " of this doubly magic shell closure , is partly motivated by the occurrence of a resonance-like β decay related to the Gamow-Teller (GT) transitions of a g 9/2 proton into a g 7/2 neutron. For odd-A tin isotopes , this transformation initiates from the even-even core,(More)
The shape transition in the neutron-rich Os isotopes is studied by investigating the neutron-rich 196 Os nucleus through in-beam γ-ray spectroscopy using a two-proton transfer reaction from a 198 Pt target to a 82 Se beam. The beam-like recoils were detected and identified with the large-acceptance magnetic spectrometer PRISMA, and the coincident γ rays(More)
116 Ru and 118 Ru have been studied via β-delayed γ-ray spectroscopy of nuclei produced in fragmentation reactions at the Radioactive Ion-Beam Factory (RIBF) facility. Level schemes with positive-parity states up to spin J = 6 have been constructed. The results have been discussed in terms of the interacting boson model, the algebraic collective model, and(More)
Shell structure and magic numbers in atomic nuclei were generally explained by pioneering work that introduced a strong spin-orbit interaction to the nuclear shell model potential. However, knowledge of nuclear forces and the mechanisms governing the structure of nuclei, in particular far from stability, is still incomplete. In nuclei with equal neutron and(More)
Heavy neutron-rich nuclei were populated via the fragmentation of a E/A = 1 GeV P 208 82 b beam. Secondary fragments were separated and identified, and subsequently implanted in a passive stopper. By the detection of delayed gamma rays, isomeric decays associated with these nuclei have been identified. A total of 49 isomers were detected, with the majority(More)
Nuclear structure studies at GSI attracted recently increased interest for the results of present activities as well as for the future project FAIR. A broad range of physics phenomena can be addressed by high-resolution in-beam γ-ray spectroscopy experiments with radioactive beams offered within the Rare Isotopes Spectroscopic INvestigation at GSI (RISING)(More)
Three rotational bands in 74Kr were studied up to (in one case one transition short of) the maximum spin I(max) of their respective single-particle configurations. Their lifetimes have been determined using the Doppler-shift attenuation method. The deduced transition quadrupole moments reveal a modest decrease, but far from a complete loss of collectivity(More)
We have studied the isotopes (82)Rb45, (83)Rb46, and (84)Rb47 to search for magnetic rotation which is predicted in the tilted-axis cranking model for a certain mass region around A = 80. Excited states in these nuclei were populated via the reaction (11)B + (76)Ge with E = 50 MeV at the XTU tandem accelerator of the LNL Legnaro. Based on a γ-coincidence(More)
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