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

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

2008-01-14

arxiv.org/abs/0801.2068v1

Nucl.Phys.A803:1-29,2008

Physics

Nuclear Physics

Nuclear Experiment

40 pages, 20 figures, accept. for publication in Nucl. Phys. A

Scientific paper

10.1016/j.nuclphysa.2007.12.014

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, 187Tl, 196Tlm, 205Tl, 197Pbm, 208Pb, 190 to 197Bi, 209,215,216Bi, 203,205,229Fr, and 214,229,230Ra were determined. The obtained relative mass uncertainty in the range of $2 \cdot 10^{-7}$ to $2 \cdot 10^{-8}$ 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.

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