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Variations in the charge radii of indium isotopes between $N$ = 52 and 82
/ CRIS-ISOLDE Collaboration
Measurements of the 5$\mathrm{p}$ $^2P_{3/2}$ $\to$ $9_s$ $^2 S_{1/2}$ and 5$\mathrm{p}$ $^2P_{1/2}$ $\to$ $8_s$ $^2 S_{1/2}$ transitions in the indium atom, combined with new atomic physics calculations, were used to extract the changes in mean-square nuclear charge radii, $\delta$($r^2$), of the indium (Z = 49) isotopes $^{101-111}$In, $^{113-123}$In, and $^{125-131}$In. With a proton hole in the closed nuclear shell of Z = 50, indium provides a detailed study of the effect of unpaired nucleons adjacent to the proton-shell closure, allowing investigation into the charge radii for isotopes between the two major neutron-shell closures at N = 50 and N = 82. [...]
2025 - 10 p.
- Published in : Phys. Rev. C 111 (2025) 064325
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Reduction in nuclear size and quadrupole deformation of high-spin isomers of $^{127,129}$In
/ Vernon, A.R. (Manchester U. ; MIT ; Leuven U.) ; Binnersley, C.L. (Manchester U.) ; Garcia Ruiz, R.F. (MIT ; CERN) ; Lynch, K.M. (Manchester U. ; CERN) ; Miyagi, T. (Tsukuba U., CCS ; Darmstadt, Tech. U. ; Darmstadt, EMMI ; Heidelberg, Max Planck Inst. ; TRIUMF) ; Billowes, J. (Manchester U.) ; Bissell, M.L. (Manchester U.) ; Cocolios, T.E. (Leuven U.) ; Delaroche, J.P. (CEA DAM) ; Dobaczewski, J. (York U., England ; Warsaw U.) et al.
We employed laser spectroscopy of atomic transitions to measure the nuclear charge radii and electromagnetic properties of the high-spin isomeric states in neutron-rich indium isotopes (Z = 49) near the closed proton and neutron shells at Z = 50 and N = 82. Our data reveal a reduction in the nuclear charge radius and intrinsic quadrupole moment when protons and neutrons are fully aligned in 129In(N = 80), to form the high spin isomer. [...]
arXiv:2505.14977.-
2025-06-26 - 9 p.
- Published in : 10.1103/m35x-mw7z
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Charge radii measurements of exotic tin isotopes in the proximity of $N=50$ and $N=82$
/ Gustafsson, F.P. (KU Leuven, Dept. Phys. Astron. ; CERN) ; Rodríguez, L.V. (Heidelberg, Max Planck Inst. ; CERN ; IJCLab, Orsay) ; Garcia Ruiz, R.F. (MIT ; Manchester U. ; CERN) ; Miyagi, T. (Tsukuba U., RCCP ; Darmstadt, Tech. U. ; Darmstadt, EMMI ; Heidelberg, Max Planck Inst.) ; Bai, S.W. (Peking U., SKLNPT) ; Balabanski, D.L. (Bucharest, IFIN-HH) ; Binnersley, C.L. (Manchester U.) ; Bissell, M.L. (Manchester U.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Cheal, B. (Liverpool U.) et al.
We report nuclear charge radii for the isotopes $^{104-134}$Sn, measured using two different collinear laser spectroscopy techniques at ISOLDE-CERN. [...]
arXiv:2504.17060.
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Charge radii of neutron-rich scandium isotopes and the seniority symmetry in the $0f_{7/2}$ shell
/ Bai, S.W. (Peking U., SKLNPT) ; Yang, X.F. (Peking U., SKLNPT) ; Koszorús, Á. (Leuven U.) ; Berengut, J.C. (New South Wales U.) ; Billowes, J. (Manchester U.) ; Bissell, M.L. (Manchester U.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Borschevsky, A. (Groningen U.) ; Campbell, P. (Manchester U.) ; Cheal, B. (Liverpool U.) et al.
Nuclear charge radii of neutron-rich $^{47-49}$Sc isotopes were measured using collinear laser spectroscopy at CERN-ISOLDE. The new data reveal that the charge radii of scandium isotopes exhibit a distinct trend between $N=20$ and $N=28$, with $^{41}$Sc and $^{49}$Sc isotopes having similar values, mirroring the closeness of the charge radii of $^{40}$Ca and $^{48}$Ca. [...]
arXiv:2504.12001.-
2025-05-07 - 7 p.
- Published in : Phys. Rev. Lett. 134 (2025) 182501
Fulltext: 2504.12001 - PDF; publication - PDF;
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Smooth trends in fermium charge radii and the impact of shell effects
/ Warbinek, Jessica (Darmstadt, GSI ; Mainz U. ; CERN ; Helmholtz Inst., Mainz) ; Rickert, Elisabeth (Darmstadt, GSI ; Mainz U. ; Helmholtz Inst., Mainz) ; Raeder, Sebastian (Darmstadt, GSI ; Helmholtz Inst., Mainz) ; Albrecht-Schönzart, Thomas (Colorado School of Mines) ; Andelic, Brankica (Darmstadt, GSI ; Helmholtz Inst., Mainz ; Groningen U.) ; Auler, Julian (Mainz U.) ; Bally, Benjamin (IRFU, Saclay) ; Bender, Michael (IP2I, Lyon) ; Berndt, Sebastian (Mainz U.) ; Block, Michael (Darmstadt, GSI ; Mainz U. ; Helmholtz Inst., Mainz) et al.
The quantum-mechanical nuclear-shell structure determines the stability and limits of the existence of the heaviest nuclides with large proton numbers Z ≳ 100 (refs. $^{1–3}$). [...]
2024 - 5 p.
- Published in : Nature 634 (2024) 1075-1079
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Nuclear charge radii of germanium isotopes around $N$ = 40
/ Wang, S.J. (Peking U., SKLNPT) ; Kanellakopoulos, A. (Leuven U.) ; Yang, X.F. (Peking U., SKLNPT ; Leuven U.) ; Bai, S.W. (Peking U., SKLNPT) ; Billowes, J. (Manchester U.) ; Bissell, M.L. (Manchester U.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Cheal, B. (Manchester U.) ; Devlin, C.S. (Manchester U.) ; Garcia Ruiz, R.F. (MIT ; CERN) et al.
Collinear laser spectroscopy measurements were performed on $^{68-74}$Ge isotopes ($Z = 32$) at ISOLDE-CERN, by probing the $4s^2 4p^2 \, ^3\!P_1 \rightarrow 4s^2 4p 5s \, ^3\!P_1^o$ atomic transition (269~nm) of germanium. Nuclear charge radii are determined via the measured isotope shifts, revealing a larger local variation than the neighboring isotopic chains. [...]
arXiv:2404.06046.-
2024-07-11 - 6 p.
Fulltext: 2404.06046 - PDF; Publication - PDF;
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Electromagnetic properties of indium isotopes illuminate the doubly magic character of $^{100}$Sn
/ Karthein, J. (MIT) ; Ricketts, C.M. (Manchester U.) ; Garcia Ruiz, R.F. (MIT ; Manchester U. ; CERN) ; Billowes, J. (Manchester U.) ; Binnersley, C.L. (Manchester U.) ; Cocolios, T.E. (Leuven U.) ; Dobaczewski, J. (York U., England ; Warsaw U.) ; Farooq-Smith, G.J. (Leuven U.) ; Flanagan, K.T. (Manchester U.) ; Georgiev, G. (IJCLab, Orsay) et al.
Our understanding of nuclear properties in the vicinity of $^{100}$Sn, suggested to be the heaviest doubly magic nucleus with equal numbers of protons (Z=50) and neutrons (N=50), has been a long-standing challenge for experimental and theoretical nuclear physics. Contradictory experimental evidence exists on the role of nuclear collectivity in this region of the nuclear chart. [...]
arXiv:2310.15093.-
2024-09-30 - 20 p.
- Published in : Nature Phys. 20 (2024) 1719-1725
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Production test of Ti isotopes towards laser spectroscopy experiments
/ Plattner, Peter (Max-Planck-Institut f\"ur Kernphysik, Heidelberg, Germany) ; Bai, Shiwei (School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China) ; Blaum, Klaus (Max-Planck-Institut f\"ur Kernphysik, Heidelberg, Germany) ; Cheal, Bradley (Oliver Lodge Laboratory, University of Liverpool, UK) ; Garc\'ia Ru\'iz, Ronald (Massachusetts Institute of Technology, Cambridge, MA, USA) ; Imgram, Phillip (Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven, Belgium) ; K\"onig, Kristian (Institut f\"ur Kernphysik, Technische Universit\"at Darmstadt, Darmstadt, Germany) ; Lellinger, Tim (Institut f\"ur Kernphysik, Technische Universit\"at Darmstadt, Darmstadt, Germany) ; Minamisono, Kei (Michigan State University, East Lansing, MI, USA) ; M\"uller, Patrick (Institut f\"ur Kernphysik, Technische Universit\"at Darmstadt, Darmstadt, Germany) et al.
CERN-INTC-2023-039 ; INTC-I-255.
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2023.
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Opportunities for Fundamental Physics Research with Radioactive Molecules
/ Arrowsmith-Kron, Gordon (Michigan State U.) ; Athanasakis-Kaklamanakis, Michail (CERN ; Leuven U.) ; Au, Mia (CERN ; Mainz U.) ; Ballof, Jochen (CERN ; Michigan State U.) ; Berger, Robert (Philipps U. Marburg) ; Borschevsky, Anastasia (U. Groningen, VSI) ; Breier, Alexander A. (Kassel U.) ; Buchinger, Fritz (McGill U.) ; Budker, Dmitry (Darmstadt, GSI ; UC, Berkeley) ; Caldwell, Luke (JILA, Boulder ; U. Colorado, Boulder ; Colorado U.) et al.
Molecules containing short-lived, radioactive nuclei are uniquely positioned to enable a wide range of scientific discoveries in the areas of fundamental symmetries, astrophysics, nuclear structure, and chemistry. Recent advances in the ability to create, cool, and control complex molecules down to the quantum level, along with recent and upcoming advances in radioactive species production at several facilities around the world, create a compelling opportunity to coordinate and combine these efforts to bring precision measurement and control to molecules containing extreme nuclei. [...]
arXiv:2302.02165.-
2024-07-12 - 119 p.
- Published in : Rep. Prog. Phys. 87 (2024) 084301
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Laser spectroscopy of neutron-deficient thulium isotopes
/ Cheal, Bradley (Oliver Lodge Laboratory, University of Liverpool, UK.) ; Rodriguez, Liss (Experimental Physics Department, CERN, Geneva, Switzerland / Max-Planck-Institut fur Kernphysik, Heidelberg, Germany.) ; Bai, Shiwei (School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking Uni- versity, Beijing, China.) ; Blaum, Klaus (Max-Planck-Institut fu ̈r Kernphysik, Heidelberg, Germany.) ; Campbell, Paul (School of Physics and Astronomy, The University of Manchester, Manchester, UK.) ; Garcia Ruiz, Ronald (Massachusetts Institute of Technology, Cambridge, MA, USA.) ; Imgram, Philip (Institut fur Kernphysik, Technische Universitat Darmstadt, Darmstadt, Germany.) ; Koenig, Kristian (Institut fur Kernphysik, Technische Universitat Darmstadt, Darmstadt, Germany.) ; Lellinger, Tim (Experimental Physics Department, CERN, Geneva, Switzerland / Institut fur Kernphysik, Technische Universitat Darmstadt, Darmstadt, Germany.) ; Muller, Patrick (Institut fur Kernphysik, Technische Universitat Darmstadt, Darmstadt, Germany.) et al.
CERN-INTC-2022-041 ; INTC-I-245.
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2022.
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