Nies, L., Atanasov, D., Athanasakis-Kaklamanakis, M. et al. (16 more authors) (2023) Isomeric Excitation Energy for 99In^m from Mass Spectrometry Reveals Constant Trend Next to Doubly Magic 100Sn. Physical Review Letters. 022502. ISSN 1079-7114
Abstract
The excitation energy of the 1/2- isomer in 99In at N=50 is measured to be 671(37) keV and the mass uncertainty of the 9/2+ ground state is significantly reduced using the ISOLTRAP mass spectrometer at ISOLDE/CERN. The measurements exploit a major improvement in the resolution of the multireflection time-of-flight mass spectrometer. The results reveal an intriguing constancy of the 1/2- isomer excitation energies in neutron-deficient indium that persists down to the N=50 shell closure, even when all neutrons are removed from the valence shell. This trend is used to test large-scale shell model, ab initio, and density functional theory calculations. The models have difficulties describing both the isomer excitation energies and ground-state electromagnetic moments along the indium chain.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Funding Information: | Funder Grant number SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC) ST/V001035/1 |
Depositing User: | Pure (York) |
Date Deposited: | 20 Jul 2023 10:40 |
Last Modified: | 16 Oct 2024 19:18 |
Published Version: | https://doi.org/10.1103/PhysRevLett.131.022502 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevLett.131.022502 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:201597 |
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Filename: PhysRevLett.131.022502.pdf
Description: Isomeric Excitation Energy for 99Inm from Mass Spectrometry Reveals Constant Trend Next to Doubly Magic 100Sn
Licence: CC-BY 2.5