Nuclear Structure and Reactions
Study of the N = 50 major shell effect toward 78Ni at PARRNe⋆
Institut de Physique Nucléaire, 15 rue Georges Clemenceau, 91406, Orsay, France
2 GANIL, Bld Henri Becquerel, 14076, Caen Cedex 5, France
* e-mail: firstname.lastname@example.org.
Accepted: 5 June 2006
Published online: 3 July 2006
The γ-ray de-excitations following the β-decay of 83Ga and the β-n decay of 84Ga have been studied. The radioactive species were produced using the PARRNe on-line mass-separator installed at the IPN Orsay Tandem accelerator. Two γ-lines were attributed to 83Ge with the aid of β-γ and γ-γ coincidences. The Z identification of the γ-lines was provided by time analysis of a buid-up/decay cycle. The excited levels of 83Ge can be explained by the coupling of the single neutron state ν2d 5/2 to the first 2+ excitation of the 82Ge core.
PACS: 29.30.-h Spectrometers and spectroscopic techniques – / 21.10.-k Properties of nuclei; nuclear energy levels – / 23.20.Lv gamma transitions and level energies – / 27.50.+e 59≤A≤89 –
© Società Italiana di Fisica and Springer-Verlag, 2006