Abstract
The neutron-deficient gold isotopes in the vicinity of the neutron midshell provide prolific examples of shape coexistence and isomerism at low excitation energy. They can be probed via a number of different experimental techniques. In this study, two new isomeric states with half-lives of 294(7) and 373(9) ns have been observed in the neutron-deficient odd-odd nuclide in an experiment at the RITU gas-filled separator at JYFL, Jyväskylä. This result was achieved due to the use of a segmented planar germanium detector with a high efficiency at low energies. By applying the recoil-decay tagging technique, they were assigned to decay to two different long-lived -decaying states in .
- Received 24 September 2020
- Accepted 22 March 2021
DOI:https://doi.org/10.1103/PhysRevC.103.044307
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