Abstract
The decay of 68Cu was studied by means of a Ge(Li) spectrometer and scintillation detectors. Several new β- and γ-rays were observed and coincidence relations were subsequently established. Five γ-rays attributed to the isomeric decay of 68mCu (3.8) min result from the deexcitation of an isomeric state at 721.4 keV to levels of 610.2 and 84.3 keV. The isomeric state is interpreted as a J π = 6 − state with a possible neutron-proton configuration of ( g 9 2 +) n , ( p 3 2 −) p . Approximately 85 % of the decay is through isomeric transitions to the 31 sec 68Cu ( J π = 1 +) ground state. This equilibrium activity was used to study the level stucture of 68Zn in addition to confirming previous assignments.
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