High-resolution study of E0 internal pair decay of excited 0+ states in 58,60,62Ni |
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| Authors: | A Passoja R Julin J Kantele M Luontama |
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| Institution: | Department of Physics, University of Jyväskylä, Finland |
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| Abstract: | The recently developed magnetic plus Si(Li)-Si(Li) sum-coincidence technique is employed to measure E0 internal-pair-formation (IPF) branching ratios of excited 0+ states in 58,60,62Ni. The values are obtained for a new 0+4 state in 60Ni at 3588.0 keV, for the 0+2 and 0+3 states at 2942.3 keV and 3530.9 keV in 58Ni, for the corresponding states at 2284.8 keV and 3318.3 keV in 60Ni, and for the 0+2 state in 62Ni at 2048.4 keV. The results are combined with the available lifetimes of these states to extract the monopole strengths ?2(0+i ? 0+1). The results and the nature of the 0+ states are discussed. |
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| Keywords: | Nuclear reactions |
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