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High-resolution laser spectroscopy of singly charged natural uranium isotopes
/ Raggio, Andrea (Jyvaskyla U.) ; Block, Michael (Darmstadt, GSI ; Mainz U., Inst. Phys. ; Helmholtz Inst., Mainz) ; Campbell, Paul (Manchester U.) ; Cheal, Bradley (Liverpool U.) ; deGroote, Ruben P (Jyvaskyla U. ; KU Leuven, Dept. Phys. Astron.) ; Gins, Wouter (Jyvaskyla U.) ; Koszorús, Ágota (Liverpool U. ; KU Leuven, Dept. Phys. Astron.) ; Moore, Iain D (Jyvaskyla U.) ; Ortiz-Cortes, Alejandro (Jyvaskyla U. ; GANIL ; Michigan State U., East Lansing (main)) ; Pohjalainen, Ilkka (Jyvaskyla U.) et al.
High-resolution collinear laser spectroscopy has been performed on singly charged ions of $^{234,235,238}$U at the IGISOL facility of the Accelerator Laboratory, University of Jyväskylä, in Finland. Ten ionic transitions from the $^{4}\hbox {I}_{9/2}$ and $^{6}\hbox {L}_{11/2}$ ground and first excited states were measured in the 300 nm wavelength range, improving the precision of the hyperfine parameters of the lower states in addition to providing newly measured values for the upper levels. [...]
2024 - 9 p.
- Published in : Sci. Rep. 14 (2024) 25621
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Measurements of binding energies and electromagnetic moments of silver isotopes – A complementary benchmark of density functional theory
/ de Groote, R P (Jyvaskyla U. ; Leuven U.) ; Nesterenko, D A (Jyvaskyla U.) ; Kankainen, A (Jyvaskyla U.) ; Bissell, M L (Manchester U.) ; Beliuskina, O (Jyvaskyla U.) ; Bonnard, J (York U., England ; IP2I, Lyon) ; Campbell, P (Manchester U.) ; Canete, L (Jyvaskyla U.) ; Cheal, B (Liverpool U.) ; Delafosse, C (Jyvaskyla U.) et al.
We report on a set of high-precision measurements of nuclear binding and excitation energies, as well as nuclear spins, magnetic dipole and electric quadrupole moments of neutron-rich silver isotopes, 113−123Ag. The measurements were performed using the JYFLTRAP mass spectrometer and the collinear laser spectroscopy beamline at the Ion Guide Isotope Separator On-Line (IGISOL) facility. [...]
2023 - 6 p.
- Published in : Phys. Lett. B 848 (2024) 138352
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Nuclear charge radius of $^{26m}$Al and its implication for V$_{ud}$ in the quark-mixing matrix
/ Plattner, P. (CERN ; Innsbruck U. ; Heidelberg, Max Planck Inst.) ; Wood, E. (Liverpool U.) ; Ayoubi, L. Al (Jyvaskyla U.) ; Beliuskina, O. (Jyvaskyla U.) ; Bissell, M.L. (Manchester U. ; CERN) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Campbell, P. (Manchester U.) ; Cheal, B. (Liverpool U.) ; de Groote, R.P. (Jyvaskyla U.) ; Devlin, C.S. (Liverpool U.) et al.
Collinear laser spectroscopy was performed on the isomer of the aluminium isotope $^{26m}$Al. The measured isotope shift to $^{27}$Al in the $3s^{2}3p\;^{2}\!P^\circ_{3/2} \rightarrow 3s^{2}4s\;^{2}\!S_{1/2}$ atomic transition enabled the first experimental determination of the nuclear charge radius of $^{26m}$Al, resulting in $R_c$=\qty{3.130±.015}{\femto\meter}. [...]
arXiv:2310.15291.-
2023-11-27 - 7 p.
- Published in : Phys. Rev. Lett. 131 (2023) 222502
Fulltext: 2310.15291 - PDF; Publication - PDF;
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High-precision measurements of the hyperfine structure of cobalt ions in the deep ultraviolet range
/ Koszorús, Á (Liverpool U. ; CERN) ; Block, M (Darmstadt, GSI ; Helmholtz Inst., Mainz ; Mainz U., Inst. Phys.) ; Campbell, P (Manchester U.) ; Cheal, B (Liverpool U.) ; de Groote, R P (Jyvaskyla U. ; KU Leuven, Dept. Phys. Astron.) ; Gins, W (Jyvaskyla U.) ; Moore, I D (Jyvaskyla U.) ; Ortiz‑Cortes, A (Jyvaskyla U. ; GANIL) ; Raggio, A (Jyvaskyla U.) ; Warbinek, J (Darmstadt, GSI)
High-precision hyperfine structure measurements were performed on stable, singly-charged $^{59}$Co ions at the IGISOL facility in Jyväskylä, Finland using the collinear laser spectroscopy technique. A newly installed light collection setup enabled the study of transitions in the 230 nm wavelength range from low-lying states below 6000 cm$^{-1}$. [...]
2023 - 7 p.
- Published in : Sci. Rep. 13 (2023) 4783
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Novel imaging technique for thermal neutrons using a fast optical camera
/ Gao, Tianqi (Manchester U.) ; D'Amen, Gabriele (Brookhaven) ; Burdin, Sergey (Liverpool U.) ; Alsulimane, Mohammad (Liverpool U.) ; Campbell, Paul (Manchester U.) ; Da Via, Cinzia (Manchester U. ; YITP, Stony Brook) ; Nomerotski, Andrei (Brookhaven) ; Roberts, Adam (Liverpool U.) ; Svihra, Peter (Manchester U. ; CERN) ; Mavrokoridis, Konstantinos (Liverpool U.) et al.
A novel imaging technique for thermal neutrons using a fast optical camera is presented. Thermal neutrons are reacted with 6Lithium to produce a pair of 2.73 MeV tritium and 2.05 MeV alpha particles, which in turn interact in a thin layer of LYSO crystal scintillator to produce a localized flash of light. [...]
2023 - 3 p.
Fulltext: PDF;
In : 15th Pisa Meeting on Advanced Detectors, La Biodola - Isola D'elba, It, 22 - 28 May 2022, pp.167604
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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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Impact of Nuclear Deformation and Pairing on the Charge Radii of Palladium Isotopes
/ Geldhof, S (Jyvaskyla U. ; Leuven U.) ; Kortelainen, M (Jyvaskyla U.) ; Beliuskina, O (Jyvaskyla U.) ; Campbell, P (Manchester U.) ; Caceres, L (GANIL) ; Cañete, L (Jyvaskyla U.) ; Cheal, B (Liverpool U.) ; Chrysalidis, K (CERN) ; Devlin, C S (Liverpool U.) ; de Groote, R P (Jyvaskyla U.) et al.
The impact of nuclear deformation can been seen in the systematics of nuclear charge radii, with radii generally expanding with increasing deformation. In this Letter, we present a detailed analysis of the precise relationship between nuclear quadrupole deformation and the nuclear size. [...]
2022 - 6 p.
- Published in : Phys. Rev. Lett. 128 (2022) 152501
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Electromagnetic moments of scandium isotopes and $N=28$ isotones in the distinctive $0f_{7/2}$ orbit
/ Bai, S.W. (Peking U., SKLNPT) ; Koszorús, Á. (Leuven U. ; Liverpool U.) ; Hu, B.S. (Peking U., SKLNPT ; TRIUMF) ; Yang, X.F. (Peking U., SKLNPT) ; Billowes, J. (Manchester U.) ; Binnersley, C.L. (Manchester U.) ; Bissell, M.L. (Manchester U.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Campbell, P. (Manchester U.) ; Cheal, B. (Liverpool U.) et al.
The electric quadrupole moment of $^{49}$Sc was measured by collinear laser spectroscopy at CERN-ISOLDE to be $Q_{\rm s}=-0.159(8)$$e$b, and a nearly tenfold improvement in precision was reached for the electromagnetic moments of $^{47,49}$Sc. The single-particle behavior and nucleon-nucleon correlations are investigated with the electromagnetic moments of $Z=21$ isotopes and $N=28$ isotones as valence neutrons and protons fill the distinctive $0f_{7/2}$ orbit, respectively, located between magic numbers, 20 and 28. [...]
arXiv:2203.09111.-
2022-04-02 - 8 p.
- Published in : Phys. Lett. B 829 (2022) 137064
Fulltext: Publication - PDF; 2203.09111 - PDF;
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Evidence of a sudden increase in the nuclear size of proton-rich silver-96
/ Reponen, M (Jyvaskyla U.) ; de Groote, R P (Jyvaskyla U.) ; Al Ayoubi, L (Jyvaskyla U. ; IJCLab, Orsay) ; Beliuskina, O (Jyvaskyla U.) ; Bissell, M L (Manchester U.) ; Campbell, P (Manchester U.) ; Cañete, L (Surrey U.) ; Cheal, B (Liverpool U.) ; Chrysalidis, K (CERN) ; Delafosse, C (Jyvaskyla U. ; IJCLab, Orsay) et al.
Understanding the evolution of the nuclear charge radius is one of the long-standing challenges for nuclear theory. Recently, density functional theory calculations utilizing Fayans functionals have successfully reproduced the charge radii of a variety of exotic isotopes. [...]
2021 - 8 p.
- Published in : Nature Commun. 12 (2021) 4596
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Proton-neutron pairing correlations in the self-conjugate nucleus $^{42}$Sc
/ Koszorus, Agota (Liverpool U.) ; Vormawah, Liam (Liverpool U.) ; Beerwerth, Randolf (Helmholtz Inst., Jena) ; Bissell, Mark (Manchester U.) ; Campbell, Paul (Manchester U.) ; Cheal, Bradley (Liverpool U.) ; Devlin, Charlie (Liverpool U.) ; Eronen, Tommi (Jyvaskyla U.) ; Fritzsche, Stephan (Helmholtz Inst., Jena) ; Geldhof, Sarina (Jyvaskyla U. ; Leuven U.) et al.
Collinear laser spectroscopy of the $N=Z=21$ self-conjugate nucleus $^{42}$Sc has been performed at the JYFL IGISOL IV facility in order to determine the change in nuclear mean-square charge radius between the $I^{\pi}=0^{+}$ ground state and the $I^{\pi}=7^{+}$ isomer via the measurement of the $^{42\mathrm{g},42\mathrm{m}}$Sc isomer shift. New multi-configurational Dirac-Fock calculations for the atomic mass shift and field shift factors have enabled a recalibration of the charge radii of the $^{42-46}$Sc isotopes which were measured previously. [...]
arXiv:2102.01988.-
2021-08-10 - 6 p.
- Published in : Phys. Lett. B 819 (2021) 136439
Article from SCOAP3: PDF;
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