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1.
A setup for vacuum-ultraviolet spectroscopy of the $^{229}$Th low-energy isomer / Kraemer, Sandro (KU Leuven ; LMU, Garching) ; Chhetri, Premaditya (KU Leuven) ; Bara, Silvia (KU Leuven) ; Claessens, Arno (KU Leuven) ; De Witte, Hilde (KU Leuven) ; Elskens, Yens (KU Leuven) ; Ferrer, Rafael (KU Leuven) ; Kudryavtsev, Yuri (KU Leuven) ; Sels, Simon (KU Leuven) ; Van Den Bergh, Paul (KU Leuven) et al.
The ground-state transition of the low-energy isomer in $^{229}$Th has been proposed as the basis for the development of a novel optical clock as a tool for fundamental-physics studies. Vacuum-ultraviolet studies of the 𝛽-decay of 229Ac recently enabled to measure the de-excitation energy of the isomer with a sevenfold improvement in precision compared to previous results by directly observing photons from the isomer’s radiative decay. [...]
2023 - 3 p. - Published in : Nucl. Instrum. Methods Phys. Res., B 542 (2023) 1-3
In : 19th International Conference on Electromagnetic Isotope Separators and Related Topics (EMIS 2022), Daejeon, Korea, 3 - 7 Oct 2022
2.
Observation of the radiative decay of the ${}^{229}\mathrm{Th}$ nuclear clock isomer / Kraemer, Sandro (Leuven U. ; LMU Munich (main)) ; Moens, Janni (Leuven U.) ; Athanasakis-Kaklamanakis, Michail (Leuven U. ; CERN) ; Bara, Silvia (Leuven U.) ; Beeks, Kjeld (Vienna, Tech. U., Atominst.) ; Chhetri, Premaditya (Leuven U.) ; Chrysalidis, Katerina (CERN) ; Claessens, Arno (Leuven U.) ; Cocolios, Thomas E. (Leuven U.) ; Correia, João G.M. (Lisbon U.) et al.
The nucleus of the radioisotope thorium-229 (${}^{229}$Th) features an isomer with an exceptionally low excitation energy that enables direct laser manipulation of nuclear states. For this reason, it is a leading candidate for use in next-generation optical clocks. [...]
arXiv:2209.10276.- 2023-05-24 - 15 p. - Published in : Nature 617 (2023) 706–710 Fulltext: PDF;
3.
Study of the radiative decay of the low-energy isomer in $^{229}$Th / Chhetri, Premaditya (KU Leuven) ; Bara, Silvia (KU Leuven) ; Beeks, Kjeld (TU Wein) ; Bernerd, Cyril (KU Leuven, CERN) ; Block, Michael (GSI Darmstadt, HIM Mainz, University of Mainz) ; Claessens, Arno (KU Leuven) ; Cocolios, Thomas Elias (KU Leuven) ; Martins Correia, João Guilherme (Universidade de Lisboa) ; Granadeiro Costa, Angelo Rafael (KU Leuven) ; Cottenier, Stefaan (Ghent University) et al.
CERN-INTC-2022-017 ; INTC-P-628.
- 2022.
Fulltext
4.
Laser spectroscopy of neutron-rich and neutron-deficient cadmium isotopes using MIRACLS at ISOLDE / Sels, Simon (CERN and KU Leuven (IKS)) ; Malbrunot-Ettenauer, Stephan (CERN)
CERN-INTC-2020-068 ; INTC-P-583.
- 2020.
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5.
Study of the radiative decay of the low-energy isomer in ${}^{229}$Th / Kraemer, Sandro (Institute for Nuclear and Radiation Physics, KU Leuven, Belgium) ; Beeks, Kjeld (Institute of Atomic and Subatomic Physics, Vienna University of Technology, Austria) ; Block, Michael (GSI Helmholtzzentrum für Schwerionenforschung, Germany) ; Cocolios, Thomas (Institute for Nuclear and Radiation Physics, KU Leuven, Belgium) ; Correia, Guilherme (ISOLDE-CERN, Switzerland) ; Cottenier, Stefaan (Center for Molecular Modelling, Ghent University, Belgium) ; De Witte, Hilde (Institute for Nuclear and Radiation Physics, KU Leuven, Belgium) ; Dockx, Kristof (Institute for Nuclear and Radiation Physics, KU Leuven, Belgium) ; Ferrer, Rafael (Institute for Nuclear and Radiation Physics, KU Leuven, Belgium) ; Geldhof, Sarina (Department of Physics, University of Jyväskylä, Finland) et al.
CERN-INTC-2020-020 ; INTC-P-548.
- 2020.
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6.
Fluorescence detection as a new diagnostics tool for electrostatic ion beam traps / Lechner, Simon (CERN ; TU Vienna) ; Fischer, Paul (Greifswald U.) ; Heylen, Hanne (CERN) ; Lagaki, Varvara (CERN ; Greifswald U.) ; Maier, Franziska (Linz U.) ; Plattner, Peter (CERN ; Innsbruck U.) ; Rosenbusch, Marco (Greifswald U.) ; Sels, Simon (CERN) ; Wienholtz, Frank (CERN ; Greifswald U.) ; Wolf, Robert N (Greifswald U.) et al.
In the development towards the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRACLS), an optical detection region for the observation of fluorescent light is added to an electrostatic ion beam trap (EIBT). In addition to its use for highly sensitive collinear laser spectroscopy, this fluorescence detection is introduced as a diagnostics tool for the study of the ion dynamics inside an EIBT. [...]
2019 - Published in : Hyperfine Interact. 240 (2019) 95 Fulltext: PDF;
7.
First steps in the development of the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy / Sels, Simon Mark C (CERN) ; Fischer, Paul (Ernst Moritz Arndt Universitaet (DE)) ; Heylen, Hanne (CERN) ; Lagaki, Varvara (Ernst Moritz Arndt Universitaet (DE)) ; Lechner, Simon (University of Vienna (AT)) ; Maier, Franziska Maria (Johannes Kepler University (AT)) ; Plattner, Peter (University of Innsbruck (AT)) ; Rosenbusch, Marco (Ernst Moritz Arndt Universitaet (DE)) ; Wienholtz, Frank (Ernst Moritz Arndt Universitaet (DE)) ; Wolf, Robert (Max-Planck-Gesellschaft (DE)) et al.
Collinear laser spectroscopy (CLS) has been combined with the multi-reflection time-of-flight (MR-ToF) technique. To this end, a photodetection system has been implemented at the drift region of a MR-ToF apparatus and a laser beam has been sent along the path of the ions that are stored between the two ion-optical mirrors. [...]
CERN-ISOLDE-CONF-2019-003.- Geneva : CERN, 2020 - 5 p. - Published in : Nucl. Instrum. Methods Phys. Res., B 463 (2020) 310-314 Fulltext: PDF;
8.
Laser spectroscopy of neutron-deficient mercury isotopes and commissioning of a gas-jet based RFQ ion guide / Sels, Simon Mark C
The neutron-deficient mercury isotopes are situated in the region of the Z = 82 proton shell closure, which is known for its manifestation of shape coexistence [...]
CERN-THESIS-2018-289 - 180 p.

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9.
$\beta$-delayed fission and $\alpha$-decay spectroscopy of $^{194, 196}$At / Sels, Simon
CERN-THESIS-2013-231 - 103 p.

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Se også: lignende forfatternavn
36 Sels, S
7 Sels, S.
2 Sels, Simon Mark C
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