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Nuclear structure of the neutron-rich Se, and Ge isotopes is theoretically studied in terms of the spherical full shell model with the monopole and quadrupole pairing plus quadrupole-quadrupole interaction. The experimental energy levels of low-lying states as well as high-spin states are well reproduced. The shell model results are examined in details in a pair-truncated shell model. The analysis shows the alignment of two g9/2 neutrons at high spins. [ABSTRACT FROM AUTHOR]

This contribution reports on the results of an experiment to study the near-yrast states in selenium isotopes around N=50, following their population in thick-target, multinucleon transfer reactions between an 82Se beam and a 192Os target. Discrete decays from states with spins of 20h and higher are clearly identified in the Os-like fragments. Information on the size of the energy gap between the f5/2 and p3/2 proton orbitals can be inferred from the spectroscopy of the N=48 isotone, 82Se. The experiment results for the level schemes for 80,82Se derived in the current work are compared with restricted-basis shell model calculations, which give a good description of the yrast sequences of these nuclei using a basis space limited to excitations in the (p3/2 , p1/2 , g9/2 ) neutron and (f5/2 , p3/2 , p1/2 ) proton orbitals. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]