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 $$$$^{94}$$$$ Ag, populated via the $$$$^{40}$$$$ Ca( $$$$^{58}$$$$ Ni,1p3n) $$$$^{94}$$$$ Ag reaction. The experiment was conducted using the MARA recoil separator and JUROGAM3 array at the Accelerator Laboratory of the University of Jyväskylä. Through correlating fast, high-energy beta decays at the MARA focal plane with prompt $$$$\gamma $$$$ rays emitted at the reaction target, a number of transitions between excited states in $$$$^{94}$$$$ Ag have been identified. The timing characteristics of these transitions confirm that they fall within decay sequences that feed the short-lived $$T=1$$ ground state of $$$$^{94}$$$$ Ag. The transitions are proposed to proceed within and between the sets of states with $$T=0$$ and $$T=1$$ . Possible correspondence between some of these transitions from analog states in $$$$^{94}$$$$ Pd has been discussed, and shell-model calculations including multipole and monopole electromagnetic effects have been presented, in order to enable predictions of the decay patterns between the $$T=0$$ and $$T=1$$ states and to allow a theoretical set of Coulomb energy differences to be calculated for the $$A = 94$$ $$T=1$$ analog states.
Pereira-López, X., et al. "In-beam $$\gamma $$-ray spectroscopy of $$^{94}$$Ag." European Physical Journal. A, Hadrons and Nuclei (Online), vol. 59, no. 3, Mar. 2023. https://doi.org/10.1140/epja/s10050-023-00950-8
Pereira-López, X., Bentley, M. A., Wadsworth, R., Ruotsalainen, P., Lenzi, S. M., Forsberg, U., Auranen, K., Blazhev, A., Cederwall, B., Grahn, T., Greenlees, P., Illana, A., Jenkins, D. G., Julin, R., Jutila, H., Juutinen, S., Liu, X., Llewelyn, R., ... Zimba, G. (2023). In-beam $$\gamma $$-ray spectroscopy of $$^{94}$$Ag. European Physical Journal. A, Hadrons and Nuclei (Online), 59(3). https://doi.org/10.1140/epja/s10050-023-00950-8
Pereira-López, X., Bentley, M. A., Wadsworth, R., et al., "In-beam $$\gamma $$-ray spectroscopy of $$^{94}$$Ag," European Physical Journal. A, Hadrons and Nuclei (Online) 59, no. 3 (2023), https://doi.org/10.1140/epja/s10050-023-00950-8
@article{osti_1961435,
author = {Pereira-López, X. and Bentley, M. A. and Wadsworth, R. and Ruotsalainen, P. and Lenzi, S. M. and Forsberg, U. and Auranen, K. and Blazhev, A. and Cederwall, B. and Grahn, T. and others},
title = {In-beam $$\gamma $$-ray spectroscopy of $$^{94}$$Ag},
annote = {Abstract A recoil-beta-tagging experiment has been performed to study the excited $$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}$$ 94 Ag reaction. The experiment was conducted using the MARA recoil separator and JUROGAM3 array at the Accelerator Laboratory of the University of Jyväskylä. Through correlating fast, high-energy beta decays at the MARA focal plane with prompt $$\gamma $$ γ rays emitted at the reaction target, a number of transitions between excited states in $$^{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. },
doi = {10.1140/epja/s10050-023-00950-8},
url = {https://www.osti.gov/biblio/1961435},
journal = {European Physical Journal. A, Hadrons and Nuclei (Online)},
issn = {ISSN 1434-601X},
number = {3},
volume = {59},
place = {Germany},
publisher = {Springer Science + Business Media},
year = {2023},
month = {03}}
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
Consejo Nacional de Ciencia y Tecnologia (CONACYT); Ministry of Science, ICT and Future Planning (MSIP) of Korea; Science and Technologies Facilities Council (STFC-UK); USDOE; USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1961435
Alternate ID(s):
OSTI ID: 1962524
Journal Information:
European Physical Journal. A, Hadrons and Nuclei (Online), Journal Name: European Physical Journal. A, Hadrons and Nuclei (Online) Journal Issue: 3 Vol. 59; ISSN 1434-601X
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 565, Issue 2https://doi.org/10.1016/j.nima.2006.06.034
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Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 266, Issue 19-20https://doi.org/10.1016/j.nimb.2008.05.030