Shape coexistence and isospin symmetry in A = 70 nuclei: Spectroscopy of the $T_z = -1$ nucleus $^{70}$Kr

K. Wimmer*, W. Korten, T. Arici, P. Doornenbal, P. Aguilera, A. Algora, T. Ando, H. Baba, B. Blank, A. Boso, S. Chen, A. Corsi, P. Davies, G. de Angelis, G. de France, D. T. Doherty, J. Gerl, R. Gernhäuser, D. Jenkins, S. KoyamaT. Motobayashi, S. Nagamine, M. Niikura, A. Obertelli, D. Lubos, B. Rubio, E. Sahin, T. Y. Saito, H. Sakurai, L. Sinclair, D. Steppenbeck, R. Taniuchi, R. Wadsworth, M. Zielinska

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Excited states in the $T_z=-1$ nucleus $^{70}$Kr have been populated using inelastic scattering of a radioactive $^{70}$Kr beam as well as one- and two-neutron removal reactions from $^{71,72}$Kr at intermediate beam energies. The level scheme of $^{70}$Kr was constructed from the observed $\gamma$-ray transitions and coincidences. Tentative spin and parity assignments were made based on comparison with the mirror nucleus $^{70}$Se. A second $2^+$ state and a candidate for the corresponding $4^+_2$ state suggest shape coexistence in $^{70}$Kr.
Original languageEnglish
Pages (from-to)441-446
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Early online date6 Sept 2018
Publication statusPublished - 10 Oct 2018

Bibliographical note

© 2018 The Authors.


  • Gamma-ray spectroscopy
  • Mirror symmetry
  • Radioactive beams
  • Shape coexistence

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