Abstract
The two-particle pick-up reaction58Ni(d, αγ)56Co atEd=7.0 MeV was used to determine mean lifetimes of levels in56Co up to 2.73 MeV excitation energy by the Doppler shift attenuation method,γ-rays were observed in a 43 cm3 Ge(Li)-detector at 90° to the beam axis in coincidence withα-particles detected in two 200 μm-silicon surface barrier detectors atΘα=±55°. Mean lifetimes for 10 levels in56Co and two lifetime limits have been obtained usingF(τ)-curves calculated with the Winterbon theory. The experimental results are compared with the predictions of recent shell model calculations.
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