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Charge radii, moments, and masses of mercury isotopes across the $N=126$ shell closure
/ Goodacre, T. Day (Manchester U. ; TRIUMF ; CERN) ; Afanasjev, A.V. (Mississippi State U.) ; Barzakh, A.E. (St. Petersburg, INP) ; Nies, L. (CERN ; Greifswald U.) ; Marsh, B.A. (CERN) ; Sels, S. (CERN ; Leuven U.) ; Perera, U.C. (Mississippi State U.) ; Ring, P. (Munich, Tech. U.) ; Wienholtz, F. (CERN ; Greifswald U.) ; Andreyev, A.N. (York U., England ; JAERI, Tokai) et al.
Combining laser spectroscopy in a Versatile Arc Discharge and Laser Ion Source, with Penning-trap mass spectrometry at the CERN-ISOLDE facility, this work reports on mean-square charge radii of neutron-rich mercury isotopes across the $N = 126$ shell closure, the electromagnetic moments of $^{207}$Hg and more precise mass values of $^{206-208}$Hg. The odd-even staggering (OES) of the mean square charge radii and the kink at $N = 126$ are analyzed within the framework of covariant density functional theory (CDFT), with comparisons between different functionals to investigate the dependence of the results on the underlying single-particle structure. [...]
arXiv:2111.10468.-
2021-11-30 - 20 p.
- Published in : Phys. Rev. C 104 (2021) 054322
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Laser spectroscopy of neutron-rich $^{207,208}$Hg isotopes: Illuminating the kink and odd-even staggering in charge radii across the $N=126$ shell closure
/ Day Goodacre, T. (Manchester U. ; CERN ; TRIUMF) ; Afanasjev, A.V. (Mississippi State U.) ; Barzakh, A.E. (St. Petersburg, INP) ; Marsh, B.A. (CERN) ; Sels, S. (CERN ; Leuven U.) ; Ring, P. (Munich, Tech. U.) ; Nakada, H. (Chiba U.) ; Andreyev, A.N. (York U., England ; JAERI, Tokai) ; Van Duppen, P. (Leuven U.) ; Althubiti, N.A. (Manchester U. ; Al Jouf U.) et al.
The mean-square charge radii of $^{207,208}$Hg ($Z=80, N=127,128$) have been studied for the first time and those of $^{202,203,206}$Hg ($N=122,123,126$) remeasured by the application of in-source resonance-ionization laser spectroscopy at ISOLDE (CERN). The characteristic \textit{kink} in the charge radii at the $N=126$ neutron shell closure has been revealed, providing the first information on its behavior below the $Z=82$ proton shell closure. [...]
arXiv:2012.13802.-
2021-01-23 - 7 p.
- Published in : Phys. Rev. Lett. 126 (2021) 032502
Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF;
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Beta-asymmetry measurements in nuclear beta-decay as a probe for non-Standard Model physics
/ Severijns, N (Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium) ; Wauters, F (Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium) ; De Leebeeck, V (Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium) ; Golovko, VV (Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium) ; Herzog, P (Helmholtz-Institut für Strahlen- und Kernphysik , Universität Bonn, D-53115 Bonn, Germany) ; Koster, U (ISOLDE - CERN, PH-UIS, CH-1211, Geneva 23, Switzerland) ; Kozlov, VYu (Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium) ; Kraev, IS (Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium) ; Tandecki, M (Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium) ; Tramm, C (Helmholtz-Institut für Strahlen- und Kernphysik , Universität Bonn, D-53115 Bonn, Germany) et al.
CERN-INTC-2010-016 ; INTC-SR-018.
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2010.
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Measurement of the $\beta$-asymmetry parameter in the decay of $^{133}$Xe.
/ Soti, G (K. U. Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200D, B-3001 Leuven, Belgium) ; Wauters, F (K. U. Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200D, B-3001 Leuven, Belgium) ; Breitenfeldt, M (K. U. Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200D, B-3001 Leuven, Belgium and CERN, 1211 Geneva, Switzerland) ; Köster, U (Institut Laue Langevin, F-38042 Grenoble Cedex 9) ; De Leebeeck, V (K. U. Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200D, B-3001 Leuven, Belgium) ; Roccia, S (K. U. Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200D, B-3001 Leuven, Belgium) ; Tandecki, M (K. U. Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200D, B-3001 Leuven, Belgium) ; Van Gorp, S (K. U. Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200D, B-3001 Leuven, Belgium) ; Zákoucký, D (Nuclear Physics Institute, ASCR, 250 68 Rez, Czech Republic) ; Severijns, N (K. U. Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200D, B-3001 Leuven, Belgium)
CERN-INTC-2011-014 ; INTC-P-298.
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2011.
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High-resolution laser spectroscopy of nickel isotopes
/ Cheal, Bradley (School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL) ; Billowes, Jon (School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL) ; Bissell, Mark (Instituut voor Kern- en Stralingsfysica, KU Leuven, B-3001 Leuven, Belgium) ; Blaum, Klaus (Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany) ; Campbell, Paul (School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL) ; Flanagan, Kieran (School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL) ; Garcia-Ruiz, Ronald (Instituut voor Kern- en Stralingsfysica, KU Leuven, B-3001 Leuven, Belgium) ; Geppert, Christopher (GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany) ; Heylen, Hanne (Instituut voor Kern- en Stralingsfysica, KU Leuven, B-3001 Leuven, Belgium) ; Kowalska, Magda (Physics Department, CERN, CH-1211 Geneva 23, Switzerland) et al.
CERN-INTC-2013-007 ; INTC-P-373.
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2013.
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Radiative lifetime of the A 2Π1/2 state in RaF with relevance to laser cooling
/ ISOLDE Collaboration
The radiative lifetime of the $A$$^2 \Pi_{1/2}$ (v=0) state in radium monofluoride (RaF) is measured to be 35(1) ns. The lifetime of this state and the related decay rate $\Gamma = 2.86(8) \times 10^7$$s^{-1}$ are of relevance to the laser cooling of RaF via the optically closed $A$$^2 \Pi_{1/2} \leftarrow X$$^2\Sigma_{1/2}$ transition, which makes the molecule a promising probe to search for new physics. [...]
arXiv:2403.09336.-
2024-07-22 - 8 p.
- Published in : Phys. Rev. A 110 (2024) L010802
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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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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: Publication - PDF; 2404.06046 - PDF;
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Development of neutron-rich Cu ion beams
/ de Groote, R P (KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium) ; Cubiss, J G (School of Physics, Engineering and Technology, University of York, York, YO10 5DD, United Kingdom) ; Schweiger, Ch (Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany) ; Chrysalidis, K (CERN, CH-1211 Geneva 23, Switzerland)
CERN-INTC-2024-024 ; INTC-I-272.
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2024.
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