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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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12.
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4.
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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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Electromagnetic moments of the odd-mass nickel isotopes $^{59-67}$Ni
/ Müller, P. (Darmstadt, Tech. U.) ; Kaufmann, S. (Darmstadt, Tech. U.) ; Miyagi, T. (Darmstadt, Tech. U. ; Heidelberg, Max Planck Inst. ; Darmstadt, EMMI) ; Billowes, J. (Manchester U.) ; Bissell, M.L. (Manchester U.) ; Blaum, K. (Darmstadt, EMMI) ; Cheal, B. (Liverpool U.) ; Garcia Ruiz, R.F. (CERN) ; Gins, W. (Leuven U.) ; Gorges, C. (Darmstadt, Tech. U.) et al.
The magnetic dipole and the spectroscopic quadrupole moments of the nuclear ground states in the odd-mass nickel isotopes $^{59-67}$Ni have been determined using collinear laser spectroscopy at the CERN-ISOLDE facility. They are compared to ab initio valence-space in-medium similarity renormalization group (VS-IMSRG) calculations including contributions of two-body currents as well as to shell-model calculations. [...]
arXiv:2405.13668.-
2024-05-22 - 10 p.
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High-Precision Spectroscopy of O20 Benchmarking Ab Initio Calculations in Light Nuclei
/ Zanon, I. (INFN, Legnaro ; Ferrara U.) ; Clément, E. (GANIL) ; Goasduff, A. (INFN, Legnaro) ; Menéndez, J. (ICC, Barcelona U.) ; Miyagi, T. (Darmstadt, Tech. U. ; Heidelberg, Max Planck Inst. ; Darmstadt, GSI) ; Assié, M. (IJCLab, Orsay) ; Ciemała, M. (Cracow, INP) ; Flavigny, F. (LPC, Caen) ; Lemasson, A. (GANIL) ; Matta, A. (LPC, Caen) et al.
The excited states of unstable $^{20}$O were investigated via $\gamma$-ray spectroscopy following the $^{19}$O$(d,p)^{20}$O reaction at 8 $A$MeV. By exploiting the Doppler Shift Attenuation Method, the lifetime of the 2$^+_2$ and 3$^+_1$ states were firmly established. [...]
arXiv:2405.14305.-
2023-12-28 - 7 p.
- Published in : Phys. Rev. Lett. 131 (2023) 262501
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7.
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Electromagnetic moments of the antimony isotopes $^{112−133}$Sb
/ Lechner, S. (CERN ; Vienna, Tech. U., Atominst.) ; Miyagi, T. (Darmstadt, EMMI ; Heidelberg, Max Planck Inst. ; TRIUMF) ; Xu, Z.Y. (Leuven U. ; Tennessee U.) ; Bissell, M.L. (Manchester U. ; CERN) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Cheal, B. (Liverpool U.) ; Devlin, C.S. (Liverpool U.) ; Garcia Ruiz, R.F. (CERN) ; Ginges, J.S.M. (Queensland U.) ; Heylen, H. (CERN ; Heidelberg, Max Planck Inst.) et al.
Nuclear moments of the antimony isotopes $^{113-133}$Sb are measured by collinear laser spectroscopy and used to benchmark phenomenological shell-model and \textit{ab initio} calculations in the valence-space in-medium similarity renormalization group (VS-IMSRG). The shell-model calculations reproduce the electromagnetic moments over all Sb isotopes when suitable effective $g$-factors and charges are employed. [...]
arXiv:2311.01110.-
2023-10-26 - 9 p.
Fulltext: 2311.01110 - 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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Isomeric excitation energy for $^{99}$In$^{m}$ from mass spectrometry reveals constant trend next to doubly magic $^{100}$Sn
/ Nies, L. (CERN ; Greifswald U.) ; Atanasov, D. (CERN) ; Athanasakis-Kaklamanakis, M. (CERN ; Leuven U.) ; Au, M. (CERN ; Mainz U.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Dobaczewski, J. (Warsaw U.) ; Hu, B.S. (TRIUMF) ; Holt, J.D. (TRIUMF ; McGill U.) ; Karthein, J. (MIT) ; Kulikov, I. (Darmstadt, GSI) et al.
The excitation energy of the 1/2$^-$ isomer in $^{99}$In at ${N=50}$ is measured to be 671(37) keV and the mass uncertainty of the 9/2$^+$ ground state is significantly reduced using the ISOLTRAP mass spectrometer at ISOLDE/CERN. The measurements exploit a major improvement in the resolution of the multi-reflection time-of-flight mass spectrometer. [...]
arXiv:2306.02033.-
2023-07-14 - 13 p.
- Published in : Phys. Rev. Lett. 131 (2023) 022502
Fulltext: 2306.02033 - PDF; Publication - PDF;
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10.
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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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