Abstract
This contribution summarizes results on nuclear structure of rare earth nuclei at high intrinsic excitation energy and low spin obtained with the (3He, 4He) and (3He, 3He') reactions. For Ex > 4.5 MeV we find that the γ-spectra from the two reactions are similar indicating that equilibrium is present prior to γ-emission. An unresolved γ-ray bump at 1 MeV is observed in the decay. This structure is ascribed the depopulation of the vibrational regime, defined around Ex = 1-2 MeV, to the ground state band. The technique of extracting first-generation γ-ray spectra is described and surprising low-energy γ-rays are found at high excitation energy. Preliminary results from the new CACTUS multidetector system are presented.
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