In-beam 𝛾-ray spectroscopy of 94Ag

X. Pereira-López*, M. A. Bentley*, R. Wadsworth, P. Ruotsalainen, S. M. Lenzi, U. Forsberg, K. Auranen, A. Blazhev, B. Cederwall, T. Grahn, P. Greenlees, A. Illana, D. G. Jenkins, R. Julin, H. Jutila, S. Juutinen, X. Liu, R. Llewelyn, M. Luoma, K. MoschnerC. Muller-Gatermann, B.S. Nara Singh, F. Nowacki, J. Ojala, J. Pakarinen, P. Papadakis, P. Rahkila, J. Romero, M. Sandzelius, J. Sarén, H. Tann, S. Uthayakumaar, J. Uusitalo, J. G. Vega-Romero, J. M. Vilhena, R. Yajzey, W. Zhang, G. Zimba

*Corresponding author for this work

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A recoil-beta-tagging experiment has been performed to study the excited 𝑇=0 and 𝑇=1 states in the odd–odd 𝑁=𝑍 nucleus 94Ag, populated via the 40Ca(58
Ni,1p3n)94Ag reaction. The experiment was conducted using the MARA recoil separator and JUROGAM3 array at the Accelerator Laboratory of the University of Jyväskylä. Through correlating fast, high-energy beta decays at the MARA focal plane with prompt 𝛾 rays emitted at the reaction target, a number of transitions between excited states in 94Ag have been identified. The timing characteristics of these transitions confirm that they fall within decay sequences that feed the short-lived 𝑇=1
ground state of 94Ag. The transitions are proposed to proceed within and between the sets of states with 𝑇=0 and 𝑇=1. Possible correspondence between some of these transitions from analog states in 94Pd has been discussed, and shell-model calculations including multipole and monopole electromagnetic effects have been presented, in order to enable predictions of the decay patterns between the 𝑇=0 and 𝑇=1 states and to allow a theoretical set of Coulomb energy differences to be calculated for the 𝐴=94 𝑇=1 analog states.
Original languageEnglish
Article number44
Number of pages8
JournalThe European Physical Journal A
Publication statusPublished - 15 Mar 2023


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