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

Abstract

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.

arXiv commentaccepted Phys. Lett. B

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Cited by in corpus (5)

• Shape coexistence in even-even nuclei: A theoretical overview
• Shape changes in the mirror nuclei ${}^{70}$Kr and ${}^{70}$Se
• Discovery of ${}^{68}$Br in secondary reactions of radioactive beams
• One-proton and one-neutron knockout reactions from $N=Z=28$ ${}^{56}$Ni to the $A=55$ mirror pair ${}^{55}$Co and ${}^{55}$Ni
• Proton removal from ${}^{73,75}$Br to ${}^{72,74}$Se at intermediate energies