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Title: Evidence for a beta-decaying 1/2- isomer in 71Ni
Authors: Stefanescu, Irina ×
Pauwels, Dieter
Bree, Nick
Cocolios, Thomas Elias
Diriken, Jan
Franchoo, Serge
Huyse, Marc
Ivanov, Oleg
Kudryavtsev, Yuri
Patronis, Nikolaos
Van de Walle, Jarno
Van Duppen, Piet
Walters, William B #
Issue Date: 30-Apr-2009
Publisher: Published for the American Physical Society by the American Institute of Physics
Series Title: Physical Review C, Nuclear physics vol:79 issue:4
Article number: 044325
Abstract: We report on the investigation of the population mechanism for the 454-keV level in 71Cu. This level was identified for the first time in a recent Coulomb excitation measurement with a radioactive beam of 71Cu. The selective nature of the Coulomb-excitation process as well as nuclear-structure considerations constrain the possible spin values for the newly observed state to I^pi = 1/2−. A reexamination of the data set obtained in a beta-decay study at the Leuven isotope separator on-line mass separator (LISOL) revealed that this state is also populated in the decay of 71Ni, most probably by direct feeding from a newly identified 1/2− beta-decaying isomer having a T_1/2 = 2.3(3) s. In this paper, we investigate the proposed scenario by reanalyzing the beta-gamma and gamma-gamma coincidences obtained in the beta-decay study at LISOL.
ISSN: 0556-2813
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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