Refining the nuclear mass surface with the mass of Sn
L Nies, D Atanasov… - arXiv preprint arXiv …, 2024 - arxiv.org
arXiv preprint arXiv:2410.17995, 2024•arxiv.org
Mass measurements with the ISOLTRAP mass spectrometer at CERN-ISOLDE improve
mass uncertainties of neutron-deficient tin isotopes towards doubly-magic $^{100} $ Sn. The
mass uncertainty of $^{103} $ Sn was reduced by a factor of 4, and the new value for the
mass excess of-67104 (18) keV is compared with nuclear\textit {ab initio} and density
functional theory calculations. Based on these results and local trends in the mass surface,
the masses of $^{101,103} $ Sn, as determined through their $ Q_ {\textrm {EC}} $ values …
mass uncertainties of neutron-deficient tin isotopes towards doubly-magic $^{100} $ Sn. The
mass uncertainty of $^{103} $ Sn was reduced by a factor of 4, and the new value for the
mass excess of-67104 (18) keV is compared with nuclear\textit {ab initio} and density
functional theory calculations. Based on these results and local trends in the mass surface,
the masses of $^{101,103} $ Sn, as determined through their $ Q_ {\textrm {EC}} $ values …
Mass measurements with the ISOLTRAP mass spectrometer at CERN-ISOLDE improve mass uncertainties of neutron-deficient tin isotopes towards doubly-magic Sn. The mass uncertainty of Sn was reduced by a factor of 4, and the new value for the mass excess of -67104(18) keV is compared with nuclear \textit{ab initio} and density functional theory calculations. Based on these results and local trends in the mass surface, the masses of Sn, as determined through their values, were found to be inconsistent with the new results. From our measurement for Sn, we extrapolate the mass excess of Sn to -60005(300) keV, which is significantly more bound than previously suggested. By correcting the mass values for Sn, we also adjust the values of Sb, Te, I, Xe, and Cs near the proton drip line which are connected through their - and proton -values. The results show an overall smoothening of the mass surface, suggesting the absence of deformation energy above the shell closure.
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