Shape coexistence and isospin symmetry in A = 70 nuclei: Spectroscopy of the Tz = −1 nucleus 70Kr

Excited states in the Tz=−1 nucleus 70Kr have been populated using inelastic scattering of a radioactive 70Kr beam as well as one- and two-neutron removal reactions from 71,72Kr at intermediate beam energies. The level scheme of 70Kr was constructed from the observed γ-ray transitions and coincidenc...

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Bibliographic Details
Published in:Physics letters. B 2018-10, Vol.785, p.441-446
Main Authors: Wimmer, K., Korten, W., Arici, T., Doornenbal, P., Aguilera, P., Algora, A., Ando, T., Baba, H., Blank, B., Boso, A., Chen, S., Corsi, A., Davies, P., de Angelis, G., de France, G., Doherty, D.T., Gerl, J., Gernhäuser, R., Jenkins, D., Koyama, S., Motobayashi, T., Nagamine, S., Niikura, M., Obertelli, A., Lubos, D., Rubio, B., Sahin, E., Saito, T.Y., Sakurai, H., Sinclair, L., Steppenbeck, D., Taniuchi, R., Wadsworth, R., Zielinska, M.
Format: Article
Language:eng ; nor
Subjects:
Gamma-ray spectroscopy
Mirror symmetry
Radioactive beams
Shape coexistence
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Summary:Excited states in the Tz=−1 nucleus 70Kr have been populated using inelastic scattering of a radioactive 70Kr beam as well as one- and two-neutron removal reactions from 71,72Kr at intermediate beam energies. The level scheme of 70Kr was constructed from the observed γ-ray transitions and coincidences. Tentative spin and parity assignments were made based on comparison with the mirror nucleus 70Se. A second 2+ state and a candidate for the corresponding 42+ state suggest shape coexistence in 70Kr.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2018.07.067