Published in

Springer, The European Physical Journal A, 3(59), 2023

DOI: 10.1140/epja/s10050-023-00950-8

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In-beam $γ $-ray spectroscopy of $^{94}$Ag

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

AbstractA recoil-beta-tagging experiment has been performed to study the excited $T=0$ T = 0 and $T=1$ T = 1 states in the odd–odd $N=Z$ N = Z nucleus $^{94}$ 94 Ag, populated via the $^{40}$ 40 Ca($^{58}$ 58 Ni,1p3n)$^{94}$ 94 Ag 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 $ γ rays emitted at the reaction target, a number of transitions between excited states in $^{94}$ 94 Ag have been identified. The timing characteristics of these transitions confirm that they fall within decay sequences that feed the short-lived $T=1$ T = 1 ground state of $^{94}$ 94 Ag. The transitions are proposed to proceed within and between the sets of states with $T=0$ T = 0 and $T=1$ T = 1 . Possible correspondence between some of these transitions from analog states in $^{94}$ 94 Pd 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 $T=0$ T = 0 and $T=1$ T = 1 states and to allow a theoretical set of Coulomb energy differences to be calculated for the $A = 94$ A = 94 $T=1$ T = 1 analog states.