Mass Measurements and Implications for the Energy of the High-Spin Isomer in 94Ag

Kankainen, A.; Elomaa, V. -V.; Batist, L.; Eliseev, S.; Eronen, T.; Hager, U.; Hakala, J.; Jokinen, A.; Moore, I. D.; Novikov, Yu. N.; Penttilä, H.; Popov, A.; Rahaman, S.; Rinta-Antila, S.; Rissanen, J.; Saastamoinen, A.; Seliverstov, D. M.; Sonoda, T.; Vorobjev, G.; Weber, C.; Äystö, J.

Mass Measurements and Implications for the Energy of the High-Spin Isomer in 94Ag

Authors

Description

Nuclides in the vicinity of 94Ag have been studied with the Penning trap mass spectrometer JYFLTRAP at the Ion-Guide Separator On-Line. The masses of the two-proton-decay daughter 92Rh and the beta-decay daughter 94Pd of the high-spin isomer in 94Ag have been measured, and the masses of 93Pd and 94Ag have been deduced. When combined with the data from the one-proton or two-proton-decay experiments, the results lead to contradictory mass excess values for the high-spin isomer in 94Ag, -46370(170) or -44970(100) keV, corresponding to excitation energies of 6960(400) or 8360(370) keV, respectively.
4 pages, 3 figures and 3 tables; v2: updated figures and references, published in Physical Review Letters