A note on60Co decay |
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Authors: | Subramanian Raman |
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Institution: | 1. Oak Ridge National Laboratory, Oak Ridge, Tennessee
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Abstract: | Theγ-rays from60Co have been studied with a 30 cm3 Ge(Li) detector. Gamma rays of energies 826.4 and 2,158.9 keV which are expected on the basis of the60Co decay scheme were sought but not observed. Their intensities are <0.02% and <0.002%, respectively, of the60Co disintegrations. Any direct feeding from the (5+)60Co ground state to the (2+) 2,159 keV level is <0.022%, yielding a logft>12.3 for the 664 keV second-forbidden uniqueβ-transition. Radioactivity60Co; measuredE γ,I γ.60Ni deduced levels, logft. Ge(Li) detector. |
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