Abstract.
Nuclear structure and decay of isomeric states in 253No were investigated. The isotope was produced by the reaction 48Ca + 207Pb . The excitation energy of the known single-particle isomeric state ( 5/2+[622] was measured by delayed coincidences between γ-rays and implanted evaporation residues and was placed into the level scheme. In addition, decay of a high-lying multi-quasiparticle isomer in 253No was studied using e −-γ coincidence measurements. A rotational band populated by its de-excitation was identified in 253No . A new isomeric state in 253Fm was observed and a partial-level scheme for this isotope is suggested. In addition γ transitions from excited levels are reported for 253Md .
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Antalic, S., Heßberger, F.P., Ackermann, D. et al. Isomeric states in 253No and 253Fm. Eur. Phys. J. A 47, 62 (2011). https://doi.org/10.1140/epja/i2011-11062-y
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DOI: https://doi.org/10.1140/epja/i2011-11062-y