Identification of sub- μ s isomeric states in the odd-odd nucleus Au 178

S. A. Gillespie, A. Stott, A. N. Andreyev, J. G. Cubiss, M. Al Monthery, C. J. Barton, S. Antalic, K. Auranen, H. Badran, D. Cox, T. Grahn, P. T. Greenlees, A. Herzan, E. Higgins, R. Julin, S. Juutinen, J. Klimo, J. Konki, M. Leino, M. MallaburnJ. Pakarinen, P. Papadakis, J. Partanen, P. M. Prajapati, P. Rahkila, M. Sandzelius, C. Scholey, J. Sorri, S. Stolze, R. Urban, J. Uusitalo, M. Venhart, F. Wearing

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Sammanfattning

The neutron-deficient gold (Z=79) isotopes in the vicinity of the neutron midshell N=104 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 Au178 (N=99) 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 α-decaying states in Au178.

Originalspråkengelska
Artikelnummer044307
TidskriftPhysical Review C
Volym103
Utgåva4
DOI
StatusPublished - 2021

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