Charge Radii Measurements of Exotic Tin Isotopes in the Proximity of $N=50$ and $N=82$

F. P. Gustafsson; L. V. Rodríguez; R. F. Garcia Ruiz; T. Miyagi; S. W. Bai; D. L. Balabanski; C. L. Binnersley; M. L. Bissell; K. Blaum; B. Cheal; T. E. Cocolios; G. J. Farooq-Smith; K. T. Flanagan; S. Franchoo; A. Galindo-Uribarri; G. Georgiev; W. Gins; C. Gorges; R. P. de Groote; H. Heylen; J. D. Holt; A. Kanellakopoulos; J. Karthein; S. Kaufmann; Á. Koszorús; K. König; V. Lagaki; S. Lechner; B. Maass; S. Malbrunot-Ettenauer; W. Nazarewicz; R. Neugart; G. Neyens; W. Nörtershäuser; T. Otsuka; P. -G. Reinhard; N. Rondelez; E. Romero-Romero; C. M. Ricketts; S. Sailer; R. Sánchez; S. Schmidt; A. Schwenk; S. R. Stroberg; N. Shimizu; Y. Tsunoda; A. R. Vernon; L. Wehner; S. G. Wilkins; C. Wraith; L. Xie; Z. Y. Xu; X. F. Yang; D. T. Yordanov

doi:10.1103/wbdx-k3cd

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arXiv · 2504.17060

Charge Radii Measurements of Exotic Tin Isotopes in the Proximity of $N=50$ and $N=82$

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Abstract

We report nuclear charge radii for the isotopes $^{104-134}$Sn, measured using two different collinear laser spectroscopy techniques at ISOLDE-CERN. These measurements clarify the arch-like 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.

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F. P. Gustafsson, L. V. Rodríguez, R. F. Garcia Ruiz, T. Miyagi, S. W. Bai, D. L. Balabanski, C. L. Binnersley, M. L. Bissell, K. Blaum, B. Cheal, T. E. Cocolios, G. J. Farooq-Smith, K. T. Flanagan, S. Franchoo, A. Galindo-Uribarri, G. Georgiev, W. Gins, C. Gorges, R. P. de Groote, H. Heylen, J. D. Holt, A. Kanellakopoulos, J. Karthein, S. Kaufmann, Á. Koszorús, K. König, V. Lagaki, S. Lechner, B. Maass, S. Malbrunot-Ettenauer, W. Nazarewicz, R. Neugart, G. Neyens, W. Nörtershäuser, T. Otsuka, P. -G. Reinhard, N. Rondelez, E. Romero-Romero, C. M. Ricketts, S. Sailer, R. Sánchez, S. Schmidt, A. Schwenk, S. R. Stroberg, N. Shimizu, Y. Tsunoda, A. R. Vernon, L. Wehner, S. G. Wilkins, C. Wraith, L. Xie, Z. Y. Xu, X. F. Yang, D. T. Yordanov. 2025-11-27. Charge Radii Measurements of Exotic Tin Isotopes in the Proximity of $N=50$ and $N=82$. https://doi.org/10.1103/wbdx-k3cd

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