Alpha-gamma decay studies of 255Rf, 251No and 247Fm
FP Heßberger, S Hofmann, D Ackermann… - The European Physical …, 2006 - Springer
The European Physical Journal A-Hadrons and Nuclei, 2006•Springer
The decay of the isotopes 255 Rf, 251 No and 247 Fm produced in the reactions
^207Pb\ensuremath(^50Ti,2n)^255Rf{^α_→{^251No\ensuremath^α_→{^247Fm, and
^206Pb\ensuremath(^48Ca,3n)^251No\ensuremath^α_→{^247Fm was investigated by
means of α-γ spectroscopy. Previously observed γ transitions in coincidence with α decays
of 255 Rf were confirmed, their energies and line intensities were measured more precisely,
and their multipolarities were determined as E 1. In 251 No a new isomeric state at E*> …
^207Pb\ensuremath(^50Ti,2n)^255Rf{^α_→{^251No\ensuremath^α_→{^247Fm, and
^206Pb\ensuremath(^48Ca,3n)^251No\ensuremath^α_→{^247Fm was investigated by
means of α-γ spectroscopy. Previously observed γ transitions in coincidence with α decays
of 255 Rf were confirmed, their energies and line intensities were measured more precisely,
and their multipolarities were determined as E 1. In 251 No a new isomeric state at E*> …
Abstract
The decay of the isotopes 255Rf, 251No and 247Fm produced in the reactions , and was investigated by means of α-γ spectroscopy. Previously observed γ transitions in coincidence with α decays of 255Rf were confirmed, their energies and line intensities were measured more precisely, and their multipolarities were determined as E1. In 251No a new isomeric state at E * > 1700keV with a half-life of ≈ 2μs was identified. The decay of 247Fm was measured more precisely. A partial level scheme of the daughter nucleus 243Cf could be established.
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