Atomic mass measurements of short-lived nuclides around the doubly-magic 208Pb

Weber, C.; Audi, G.; Beck, D.; Blaum, K.; Bollen, G.; Herfurth, F.; Kellerbauer, A.; Kluge, H.-J.; Lunney, D.; Schwarz, S.

doi:doi:10.1016/j.nuclphysa.2007.12.014

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Atomic mass measurements of short-lived nuclides around the doubly-magic ²⁰⁸Pb

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Blaum, K.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Kellerbauer, A.
Alban Kellerbauer - Emmy Noether Junior Research Group, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society;

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Citation

Weber, C., Audi, G., Beck, D., Blaum, K., Bollen, G., Herfurth, F., et al. (2008). Atomic mass measurements of short-lived nuclides around the doubly-magic ²⁰⁸Pb. Nuclear Physics A, 803(1-2), 1-29. doi:doi:10.1016/j.nuclphysa.2007.12.014.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-79C5-E

Abstract

Accurate atomic mass measurements of neutron-deficient and neutron-rich nuclides around the doubly-magic 208Pb and of neutron-rich cesium isotopes were performed with the Penning trap mass spectrometer ISOLTRAP at ISOLDE/CERN. The masses of 145,147Cs, 181,183Tl, 186Tlm, 187Tlm, 196Tlm, 205Tl, 197Pbm, 208Pb, 190–197Bi, 209,215,216Bi, 203,205,229Fr, and 214,229,230Ra were determined. The obtained relative mass uncertainty in the range of 2×10−7 to 2×10−8 is not only required for safe identification of isomeric states but also allows mapping the detailed structure of the mass surface. A mass adjustment procedure was carried out and the results included into the Atomic Mass Evaluation. The resulting separation energies are discussed and the mass spectrometric and laser spectroscopic data are examined for possible correlations.