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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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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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3.
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Ionization potential of radium monofluoride
/ Wilkins, S.G. (MIT) ; Perrett, H.A. (Manchester U.) ; Udrescu, S.M. (MIT) ; Kyuberis, A.A. (U. Groningen, VSI) ; Pašteka, L.F. (U. Groningen, VSI ; Comenius U.) ; Au, M. (CERN ; Mainz U.) ; Belošević, I. (MIT ; TRIUMF) ; Berger, R. (Philipps U. Marburg) ; Binnersley, C.L. (Manchester U.) ; Bissell, M.L. (Manchester U.) et al.
The ionization potential (IP) of radium monofluoride (RaF) was measured to be 4.969(2)[10] eV, revealing a relativistic enhancement in the series of alkaline earth monofluorides. [...]
arXiv:2408.14673.
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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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A compact RFQ cooler buncher for CRIS experiments
/ Cooper, B S (Manchester U.) ; A Perrett, H (Manchester U.) ; Ricketts, C M (Manchester U.) ; Read, C (Manchester U.) ; Edwards, G (Manchester U.) ; Flanagan, K T (Manchester U.) ; Billowes, J (Manchester U.) ; Binnersley, C L (Manchester U.) ; Bissell, M L (Manchester U.) ; Cocolios, T E (Leuven U.) et al.
A compact radio frequency cooler buncher (RFQCB) is currently in development between The University of Manchester, KU Leuven and CERN. The device will be installed as part of the Collinear Resonance Ionisation Spectroscopy (CRIS) experiment at the Isotope separator On-line device (ISOLDE) at CERN. [...]
2019 - 8 p.
- Published in : Hyperfine Interact. 240 (2019) 52
Fulltext from Publisher: PDF;
In : 7th International Conference on Trapped Charged Particles and Fundamental Physics, Takamatsu, Japan, 30 Sep - 5 Oct 2018, pp.52
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6.
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Tin resonance-ionization schemes for atomic- and nuclear-structure studies
/ Gustafsson, F P (Leuven U.) ; Ricketts, C M (Manchester U.) ; Reitsma, M L (U. Groningen, VSI) ; Garcia Ruiz, R F (CERN ; MIT) ; Bai, S W (Peking U., SKLNPT) ; Berengut, J C (Heidelberg, Max Planck Inst. ; New South Wales U.) ; Billowes, J (Manchester U.) ; Binnersley, C L (Manchester U.) ; Borschevsky, A (U. Groningen, VSI) ; Cocolios, T E (Leuven U.) et al.
This paper presents high-precision spectroscopic measurements of atomic tin using five different resonanceionization schemes performed with the collinear resonance-ionization spectroscopy technique. Isotope shifts were measured for the stable tin isotopes from the $5s^2 5p^2$ $^3P_{0,1,2}$ and $^1S_0$ to the $5s^2 5p6s ^1P_1, ^3P_{1,2}$ and $5s^2 5p7s^1 P_1$ atomic levels. [...]
2020 - 13 p.
- Published in : Phys. Rev. A 102 (2020) 052812
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7.
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Isotope Shifts of Radium Monofluoride Molecules
/ Udrescu, S.M. (MIT) ; Brinson, A.J. (MIT) ; Ruiz, R.F. Garcia (MIT ; CERN) ; Gaul, K. (Philipps U. Marburg) ; Berger, R. (Philipps U. Marburg) ; Billowes, J. (Manchester U.) ; Binnersley, C.L. (Manchester U.) ; Bissell, M.L. (Manchester U.) ; Breier, A.A. (Kassel U.) ; Chrysalidis, K. (CERN) et al.
Isotope shifts of $^{223-226,228}$Ra$^{19}$F were measured for different vibrational levels in the electronic transition $A^{2}{}{\Pi}_{1/2}\leftarrow X^{2}{}{\Sigma}^{+}$. The observed isotope shifts demonstrate the particularly high sensitivity of radium monofluoride to nuclear size effects, offering a stringent test of models describing the electronic density within the radium nucleus. [...]
arXiv:2105.10549.-
2021-07-14 - 7 p.
- Published in : Phys. Rev. Lett. 127 (2021) 033001
Fulltext: 2105.10549 - PDF; PhysRevLett.127.033001 - PDF; Fulltext from publisher: PDF;
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8.
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Charge radii of exotic potassium isotopes challenge nuclear theory and the magic character of $N = 32$
/ Koszorús, Á. (Leuven U.) ; Yang, X.F. (Peking U., SKLNPT) ; Jiang, W.G. (U. Tennessee, Knoxville ; Oak Ridge ; Chalmers U. Tech.) ; Novario, S.J. (U. Tennessee, Knoxville ; Oak Ridge) ; Bai, S.W. (Peking U., SKLNPT) ; Billowes, J. (Manchester U.) ; Binnersley, C.L. (Manchester U.) ; Bissell, M.L. (Manchester U.) ; Cocolios, T.E. (Leuven U.) ; Cooper, B.S. (Manchester U.) et al.
Nuclear charge radii are sensitive probes of different aspects of the nucleon-nucleon interaction and the bulk properties of nuclear matter; thus, they provide a stringent test and challenge for nuclear theory. The calcium region has been of particular interest, as experimental evidence has suggested a new magic number at $N = 32$ [1-3], while the unexpectedly large increases in the charge radii [4,5] open new questions about the evolution of nuclear size in neutron-rich systems. [...]
arXiv:2012.01864.-
2021-01-28 - 5 p.
- Published in : Nature Phys.
Fulltext: PDF; Fulltext from publisher: PDF;
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9.
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Laser spectroscopy of indium Rydberg atom bunches by electric field ionization
/ Vernon, A R (Leuven U.) ; Ricketts, C M (Manchester U.) ; Billowes, J (Manchester U.) ; Cocolios, T E (Leuven U.) ; Cooper, B S (Manchester U. ; U. Manchester (main)) ; Flanagan, K T (Manchester U. ; U. Manchester (main)) ; Ruiz, R F Garcia (CERN ; MIT) ; P Gustafsson, F (Leuven U.) ; Neyens, G (Leuven U. ; CERN) ; Perrett, H A (Manchester U.) et al.
This work reports on the application of a novel electric field-ionization setup for high-resolution laser spectroscopy measurements on bunched fast atomic beams in a collinear geometry. In combination with multi-step resonant excitation to Rydberg states using pulsed lasers, the field ionization technique demonstrates increased sensitivity for isotope separation and measurement of atomic parameters over previous non-resonant laser ionization methods. [...]
2020 - 18 p.
- Published in : Sci. Rep. 10 (2020) 12306
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10.
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A compact linear Paul trap cooler buncher for CRIS
/ Ricketts, C M (Manchester U.) ; Cooper, B S (Manchester U.) ; Edwards, G (Manchester U.) ; Perrett, H A (Manchester U.) ; Billowes, J (Manchester U.) ; Binnersley, C L (Manchester U.) ; Cocolios, T E (Leuven U.) ; Flanagan, K T (Manchester U.) ; Garcia Ruiz, R F (CERN) ; de Groote, R P (Jyvaskyla U.) et al.
A gas-filled linear Paul trap for the Collinear Resonance Ionisation Spectroscopy (CRIS) experiment at ISOLDE, CERN is currently under development. The trap is designed to accept beam from both ISOLDE target stations and the CRIS stable ion source. [...]
2020 - 3 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 463 (2020) 375-377
In : 18th International Conference on Electromagnetic Isotope Separators and Related Topics, Geneva, Switzerland, 16 - 21 Sep 2018, pp.375-377
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