Abstract
The GRID-method has been used to measure the lifetimes of ten excited states in59, 61, 63Ni following thermal neutron capture in Ni targets of natural isotopic composition. Four of the lifetimes have been determined for the first time, the other six lifetimes can be compared with the results of conventional DSA-measurements following charged particle induced reactions. Cascade feeding effects have been included in the analysis. Level energies and electromagnetic properties of negative parity states in59Ni have been compared with the results of shell model calculations in 3p0h and 4p 1h model spaces. Statistical model estimates of the lifetimes as function of excitation energy and spin are also given.
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Work partially supported by Deutsches BMFT under contract 06GOE141
We would like to thank E.G. Kessler, M.S. Dewey, G.L. Greene and R.D. Deslattes for the permission to use the GAMS4 spectrometer and P.W.M. Glaudemans and A.G.M. van Hees for fruitful discussions concerning the shell model calculations.
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Ulbig, S., Lieb, K.P., Boerner, H.G. et al. GRID lifetime measurements in59, 61, 63Ni following thermal neutron capture. Z. Physik A - Hadrons and Nuclei 338, 397–404 (1991). https://doi.org/10.1007/BF01295767
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DOI: https://doi.org/10.1007/BF01295767