PACS:25.85.-w Fission reactions – 21.10.-k Properties of nuclei; nuclear energy levels – 21.60.-n Nuclear-structure models and methods – 23.20.-g Electromagnetic transitions – 84.60.-h Direct energy conversion and storage
Springer Online Journal Archives 1860-2000
Abstract: Isomeric states have been observed in fission-fragments produced by spontaneous fission of 252Cf. These states are found in neutron rich nuclei of different structure and deformations. About 50 isomeric nuclei have been observed using coincidences between γ-rays identified in EUROGAM II and fission fragments detected in photovoltaic cells (SAPhIR). Lifetimes in the range from 20 ns to 2μs have been measured. Presented calculations based on HFB +D1S force on new measured isomeric states in the 152,154,156Nd show evidence for K-isomers.
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