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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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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-Precision Mass Measurements of Neutron Deficient Silver Isotopes Probe the Robustness of the <math display="inline"><mrow><mi>N</mi><mo>=</mo><mn>50</mn></mrow></math> Shell Closure
/ Ge, Zhuang (Jyvaskyla U.) ; Reponen, Mikael (Jyvaskyla U.) ; Eronen, Tommi (Jyvaskyla U.) ; Hu, Baishan (TRIUMF ; ORNL, Oak Ridge (main) ; Oak Ridge) ; Kortelainen, Markus (Jyvaskyla U.) ; Kankainen, Anu (Jyvaskyla U.) ; Moore, Iain (Jyvaskyla U.) ; Nesterenko, Dmitrii (Jyvaskyla U.) ; Yuan, Cenxi (SYSU, Guangzhou) ; Beliuskina, Olga (Jyvaskyla U.) et al.
High-precision mass measurements of exotic $^{95-97}$Ag isotopes close to the $N = Z$ line have been conducted with the JYFLTRAP double Penning trap mass spectrometer, with the silver ions produced using the recently commissioned inductively-heated hot cavity catcher laser ion source at the Ion Guide Isotope Separator On-Line facility. The atomic mass of $^{95}$Ag was directly determined for the first time. [...]
arXiv:2401.07976.-
2024-09-26 - 9 p.
- Published in : Phys. Rev. Lett. 133 (2024) 132503
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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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Charge radii of thallium isotopes near the N=126 shell closure
/ IDS Collaboration
The changes in the mean-squared charge radius of Tlg209 (N=128) and Tlm207 (N=126) relative to Tl205 have been measured for the first time using the in-source laser resonance-ionization spectroscopy technique with the Laser Ion Source and Trap (LIST) at ISOLDE (CERN). The application of the LIST suppresses the dominant background from isobaric francium isotopes and allows access to thallium nuclides with A⩾207. [...]
2024 - 9 p.
- Published in : Phys. Rev. C 110 (2024) 034315
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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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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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Nuclear Charge Radii of the Nickel Isotopes $^{58-68,70}$Ni
/ Malbrunot-Ettenauer, S. (CERN) ; Kaufmann, S. (Darmstadt, Tech. U.) ; Bacca, S. (Mainz U., Inst. Kernchem. ; Helmholtz Inst., Mainz) ; Barbieri, C. (Surrey U. ; Milan U. ; INFN, Milan) ; Billowes, J. (Manchester U.) ; Bissell, M.L. (Manchester U.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Cheal, B. (Liverpool U.) ; Duguet, T. (IRFU, Saclay) ; Ruiz, R.F. Garcia (CERN ; Manchester U.) et al.
Collinear laser spectroscopy is performed on the nickel isotopes $^{58-68,70}$Ni, using a time-resolved photon counting system. From the measured isotope shifts, nuclear charge radii $R_c$ are extracted and compared to theoretical results. [...]
arXiv:2112.03382.-
2022-01-14 - 8 p.
- Published in : Phys. Rev. Lett. 128 (2022) 022502
Fulltext: PhysRevLett.128.022502 - PDF; 2112.03382 - PDF;
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Status report for the COLLAPS collaboration
/ Bissell, ML (School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, UK) ; Heylen, H (Experimental Physics Department, CERN, Geneva, Switzerland) ; Vazquez-Rodriguez, L (Max-Plank-Institut fur Kernphysik, D-69117 Heidelberg, Germany) ; Xu, ZY (KU Leuven, Instituut voor Kern-en Stralingsfysica, B-3001 Leuven, Belgium)
CERN-INTC-2019-033 ; INTC-SR-090.
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2019.
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