The decay of ⁶¹Cu and ⁵⁹Cu--energy levels of ⁶¹Ni and ⁵⁹Ni Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/bc386p515

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  • The decay of ⁶¹Cu and ⁵⁹Cu produced by (d, n) reactions on natural nickel has been investigated. Gamma-ray energies and relative intensities were measured with a high resolution Ge(Li) spectrometer. The gamma-gamma coincidence spectrum of ⁶¹Cu was studied with a Ge(Li)-NaI(T1) system. From these data decay schemes of ⁶¹Cu and ⁵⁹Cu are constructed. Inferred log ft values together with the results of previous studies are used to make spin and parity assignments for the levels of ⁶¹Ni and ⁵⁹Ni. Some previously reported ambiguities in spin assignments have been removed. The results of this study are compared with recent theoretical shell-model calculations. An efficiency curve is also given for a 2 cm² x 6 mm Ge(Li) detector as well as curves for escape peak yield. The half life of ⁶¹Cu was measured as 3.32 ± 0.01 hours.
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