Mass measurements in the 132Sn region with the JYFLTRAP double Penning trap mass spectrometer
Beliuskina, O., Nesterenko, D. A., Jaries, A., Stryjczyk, M., Kankainen, A., Canete, L., de Groote, R. P., Delafosse, C., Eronen, T., Ge, Z., Geldhof, S., Gins, W., Hukkanen, M., Jokinen, A., Moore, I. D., Mougeot, M., Nikas, S., Penttilä, H., Pohjalainen, I., . . . Zadvornaya, A. (2024). Mass measurements in the 132Sn region with the JYFLTRAP double Penning trap mass spectrometer. Physical Review C, 110(3), Article 034325. https://doi.org/10.1103/physrevc.110.034325
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2024Copyright
©2024 American Physical Society
We report on new precision mass measurements of neutron-rich 137Sb and 136−142I isotopes from the JYFLTRAP double Penning trap mass spectrometer. We confirm the value from the previous Penning-trap measurement of 137Sb at the Canadian Penning Trap and therefore rule out the conflicting result from the Experimental Storage Ring. The ground state and isomer in 136I were resolved and measured directly for the first time. The isomer excitation energy, Ex=215.1(43) keV, agrees with the literature but is three times more precise. The measurements have improved the precision of the mass values and confirmed previous results in the majority of cases. However, for 138,140I the results differ by 17(6) keV and 23(12) keV, respectively. This could be explained by an unresolved contamination or different ratio of unresolved isomeric states in the case of 140I.
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https://converis.jyu.fi/converis/portal/detail/Publication/243231551
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Research Council of Finland; European CommissionFunding program(s)
Academy Project, AoF; Research infrastructures, HE; Research costs of Academy Research Fellow, AoF; Academy Research Fellow, AoF; ERC Consolidator Grant; MSCA Innovative Training Networks (ITN)

The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about funding
This project has received funding from the European Union's Horizon 2020 Research and Innovation Programme under Grant Agreements No. 771036 (ERC CoG MAIDEN) and 861198-LISA-H2020-MSCA-ITN-2019, from the European Union's Horizon Europe Research and Innovation Programme under Grant Agreement No. 101057511 (EURO-LABS), and from the Academy of Finland Projects No. 295207, No. 306980, No. 327629, No. 354589, and No. 354968. J.R. acknowledges financial support from the Vilho, Yrjö and Kalle Väisälä Foundation.

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