Abstract
We report nuclear charge radii for the isotopes Sn104–134, measured using two different collinear laser spectroscopy techniques at ISOLDE-CERN. These measurements clarify the archlike trend in charge radii along the isotopic chain and reveal an odd-even staggering that is more pronounced near the N=50 and N=82 shell closures. The observed local trends are well described by both nuclear density functional theory and valence space in-medium similarity renormalization group calculations. Both theories predict appreciable contributions from beyond-mean-field correlations to the charge radii of the neutron-deficient tin isotopes. The models, however, fall short of reproducing the magnitude of the known B(E2) transition probabilities, highlighting the remaining challenges in achieving a unified description of both ground-state properties and collective phenomena.
| Original language | English |
|---|---|
| Article number | 222501 |
| Journal | Physical Review Letters |
| Volume | 135 |
| Issue number | 22 |
| DOIs | |
| State | Published - Nov 26 2025 |
Funding
We thank the ISOLDE technical group for their professional assistance. Useful comments from Ante Ravlić are gratefully acknowledged. This work was supported by ERC Consolidator Grant No. 648381 (FNPMLS); STFC Grants No. ST/L005794/1, No. ST/L005786/1, No. ST/L005670/1, No. ST/P004423/1, and Ernest Rutherford Grant No. ST/L002868/1; Projects No. GOA 15/010 and No. C14/22/104 from KU Leuven; the FWO-Vlaanderen Projects No. G080022N, No. G053221N, No. I002619N, and No. I001323N (Belgium); the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Grants No. DE-SC0021176 and No. DE-SC0013365, No. DE-SC0018083 and No. DE-SC0023175 (Office of Advanced Scientific Computing Research and Office of Nuclear Physics, Scientific Discovery through Advanced Computing); the Max-Planck Society; the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—Project-ID 279384907—SFB 1245; the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement No. 101020842); the German Federal Ministry for Education and Research under Contracts No. 05P15RDCIA and No. 05P24RD4; the Helmholtz International Center for FAIR (HIC for FAIR) within the LOEWE program by the State of Hesse; the European Union Grant Agreements No. 654002 and No. 262010 (ENSAR); National Key R&D Program of China (Contract No. 2018YFA0404403); the National Natural Science Foundation of China (No. 11875073); NSERC under Grants No. SAPIN-2018-00027, No. RGPAS-2018-522453, No. SAPIN-2024-0003, and the Arthur B. McDonald Canadian Astroparticle Physics Research Institute. TRIUMF receives funding via a contribution through the Digital Research Alliance of Canada. Computations were performed with an allocation of computing resources on Cedar at WestGrid and Compute Canada. J. K. acknowledges support from a Feodor-Lynen postdoctoral research fellowship funded by the Alexander-von-Humboldt Foundation. We acknowledge the computing resources provided by MIT and the Texas A&M high-performance computing cluster. T. O., N. S., and Y. T. acknowledge the support by “Program for Promoting Researches on the Supercomputer Fugaku” (JPMXP1020200105, hp220174, hp210165). T. M. and N. S. acknowledge the support by JST ERATO Grant No. JPMJER2304, Japan. P. G. R. thanks the regional computing center of the university Erlangen (RRZE) for support. This work was performed under the auspices of the U.S. Department of Energy, Office of Nuclear Physics (DOE NP) by Oak Ridge National Laboratory under Contract No. DE-AC05-00OR22725. D. L. B. is supported in part through grants from the Romanian Ministry of Research, Innovation and Digitalization under Contracts No. PN 23 21 01 06 and No. ELI-RO-RDI-2024-007 (ELITE). D. T. Y. acknowledges support from the Franco-Bulgarian Hubert Curien partnership Rila No. 51315QM and No. KP-06-RILA/4. We thank the ISOLDE technical group for their professional assistance. Useful comments from Ante Ravlić are gratefully acknowledged. This work was supported by ERC Consolidator Grant No. 648381 (FNPMLS); STFC Grants No. ST/L005794/1, No. ST/L005786/1, No. ST/L005670/1, No. ST/P004423/1, and Ernest Rutherford Grant No. ST/L002868/1; Projects No. GOA 15/010 and No. C14/22/104 from KU Leuven; the FWO-Vlaanderen Projects No. G080022N, No. G053221N, No. I002619N, and No. I001323N (Belgium); the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Grants No. DE-SC0021176 and No. DE-SC0013365, No. DE-SC0018083 and No. DE-SC0023175 (Office of Advanced Scientific Computing Research and Office of Nuclear Physics, Scientific Discovery through Advanced Computing); the Max-Planck Society; the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—Project-ID 279384907—SFB 1245; the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement No. 101020842); the German Federal Ministry for Education and Research under Contracts No. 05P15RDCIA and No. 05P24RD4; the Helmholtz International Center for FAIR (HIC for FAIR) within the LOEWE program by the State of Hesse; the European Union Grant Agreements No. 654002 and No. 262010 (ENSAR); National Key R&D Program of China (Contract No. 2018YFA0404403); the National Natural Science Foundation of China (No. 11875073); NSERC under Grants No. SAPIN-2018-00027, No. RGPAS-2018-522453, No. SAPIN-2024-0003, and the Arthur B. McDonald Canadian Astroparticle Physics Research Institute. TRIUMF receives funding via a contribution through the Digital Research Alliance of Canada. Computations were performed with an allocation of computing resources on Cedar at WestGrid and Compute Canada. J.K. acknowledges support from a Feodor-Lynen postdoctoral research fellowship funded by the Alexander-von-Humboldt Foundation. We acknowledge the computing resources provided by MIT and the Texas A&M high-performance computing cluster. T.O., N.S., and Y.T. acknowledge the support by “Program for Promoting Researches on the Supercomputer Fugaku” (JPMXP1020200105, hp220174, hp210165). T.M. and N.S. acknowledge the support by JST ERATO Grant No. JPMJER2304, Japan. P.G.R. thanks the regional computing center of the university Erlangen (RRZE) for support. This work was performed under the auspices of the U.S. Department of Energy, Office of Nuclear Physics (DOE NP) by Oak Ridge National Laboratory under Contract No. DE-AC05-00OR22725. D.L.B. is supported in part through grants from the Romanian Ministry of Research, Innovation and Digitalization under Contracts No. PN 23 21 01 06 and No. ELI-RO-RDI-2024-007 (ELITE). D.T.Y. acknowledges support from the Franco-Bulgarian Hubert Curien partnership Rila No. 51315QM and No. KP-06-RILA/4.