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Radiative Decay of the $^{229m}$Th Nuclear Clock Isomer in Different Host Materials
/ Pineda, S.V. (Leuven U.) ; Chhetri, P. (Leuven U. ; Mainz U.) ; Bara, S. (Leuven U.) ; Elskens, Y. (Leuven U.) ; Casci, S. (Leuven U.) ; Alexandrova, A.N. (UCLA, Los Angeles (main)) ; Au, M. (CERN) ; Athanasakis-Kaklamanakis, M. (Leuven U. ; CERN ; Imperial Coll., London) ; Bartokos, M. (Vienna, Tech. U., Atominst.) ; Beeks, K. (Ecole Polytechnique, Lausanne) et al.
A comparative vacuum ultraviolet spectroscopy study conducted at ISOLDE-CERN of the radiative decay of the $^{229m}$Th nuclear clock isomer embedded in different host materials is reported. The ratio of the number of radiative decay photons and the number of $^{229m}$Th embedded are determined for single crystalline CaF$_2$, MgF$_2$, LiSrAlF$_6$, AlN, and amorphous SiO$_2$. [...]
arXiv:2408.12309.-
2025-01-15 - 13 p.
- Published in : Phys. Rev. Res. 7 (2025) 013052
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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
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New Horizons: Scalar and Vector Ultralight Dark Matter
/ Antypas, D. (Mainz U. ; Helmholtz Inst., Mainz) ; Banerjee, A. (Weizmann Inst.) ; Bartram, C. (Washington U., Seattle) ; Baryakhtar, M. (Washington U., Seattle) ; Betz, J. (U. Delaware, Newark) ; Bollinger, J.J. (NIST, Boulder) ; Boutan, C. (PNL, Richland) ; Bowring, D. (Fermilab) ; Budker, D. (Helmholtz Inst., Mainz ; Mainz U. ; UC, Berkeley) ; Carney, D. (LBL, Berkeley) et al.
The last decade has seen unprecedented effort in dark matter model building at all mass scales coupled with the design of numerous new detection strategies. [...]
arXiv:2203.14915 ; FERMILAB-PUB-22-262-AD-PPD-T.
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89.
Fermilab Library Server - eConf - Fulltext - Fulltext
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4.
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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.
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2022.
Fulltext
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5.
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Expanding Nuclear Physics Horizons with the Gamma Factory
/ Budker, Dmitry (Mainz U. ; Helmholtz Inst., Mainz) ; Berengut, Julian C. (New South Wales U. ; Heidelberg, Max Planck Inst.) ; Flambaum, Victor V. (New South Wales U. ; Mainz U. ; Helmholtz Inst., Mainz ; Massey U., NZIAS) ; Gorchtein, Mikhail (Mainz U.) ; Jin, Junlan (USTC, Hefei) ; Karbstein, Felix (Helmholtz Inst., Mainz ; Jena U.) ; Krasny, Mieczyslaw Witold (Paris U., VI-VII ; CERN) ; Litvinov, Yuri A. (Darmstadt, GSI) ; Pálffy, Adriana (Erlangen - Nuremberg U., Theorie III) ; Pascalutsa, Vladimir (Mainz U.) et al.
The Gamma Factory (GF) is an ambitious proposal, currently explored within the CERN Physics Beyond Colliders program, for a source of photons with energies up to $\approx 400\,$MeV and photon fluxes (up to $\approx 10^{17}$ photons per second) exceeding those of the currently available gamma sources by orders of magnitude. The high-energy (secondary) photons are produced via resonant scattering of the primary laser photons by highly relativistic partially-stripped ions circulating in the accelerator. [...]
arXiv:2106.06584.-
2022-01-31 - 69 p.
- Published in : Ann. Phys. (Leipzig) (2022) , pp. 2100284
Fulltext: PDF; Fulltext from publisher: PDF;
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6.
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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.
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2020.
Fulltext
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7.
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High-sensitivity study of levels in $^{30}Al$ following β decay of $^{30}Mg$
/ Olaizola, B (UCM, Madrid, Dept. Phys.) ; Mach, H (UCM, Madrid, Dept. Phys.) ; Fraile, L M (UCM, Madrid, Dept. Phys.) ; Benito, J (UCM, Madrid, Dept. Phys.) ; Borge, M J G (CSIC, Madrid) ; Boutami, R (UCM, Madrid, Dept. Phys.) ; Butler, P A (Liverpool U.) ; Dlouhy, Z (Rez, Nucl. Phys. Inst.) ; Fynbo, H O U (Aarhus U.) ; Hoff, P (Oslo U.) et al.
γ-ray and fast-timing spectroscopy were used to study levels in Al30 populated following the β− decay of Mg30. Five new transitions and three new levels were located in Al30. [...]
2016 - 7 p.
- Published in : Phys. Rev. C 94 (2016) 054318
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8.
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Determination of the $B(E3,0^+ \rightarrow 3^-)$ strength in the octupole-correlated nuclei $^{142,144}$Ba using Coulomb excitation
/ Andreyev, Andrei (University of York) ; Barton, Charles (University of York) ; Blazhev, Andrey (University of Cologne) ; Butler, Peter Anthony (University of Liverpool) ; Cederkäll, Joakim (Lund University) ; Cline, Douglas (University of Rochester) ; Cocolios, Thomas Elias (KU Leuven) ; Danchev, Miroslav (Sofia University) ; Van Duppen, Piet (KU Leuven) ; Gaffney, Liam Paul (ISOLDE-CERN) et al.
CERN-INTC-2017-002 ; INTC-CLL-027.
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2017.
Fulltext - Original Document (INTC-P-348)
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9.
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Determination of the $B(E3,0^+ \rightarrow 3^-)$ strength in the octupole-correlated nuclei $^{142,144}$Ba using Coulomb excitation
/ Andreyev, Andrei (York University) ; Barton, Charles (York University) ; Blazhev, Andrey (Cologne University) ; Butler, Peter Anthony (Liverpool University) ; Cederkäll, Joakim (Lund University) ; Cline, Douglas (University of Rochester) ; Cocolios, Thomas Elias (KU Leuven) ; Danchev, Miroslav (Sofia University) ; Van Duppen, Piet (KU Leuven) ; Gernhäuser, Roman (LMU Munich) et al.
CERN-INTC-2016-042 ; INTC-SR-054.
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2016.
Fulltext
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10.
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Coulomb excitation of neutron-rich Cd isotopes
/ Ilieva, S (Tech. U. Darmstadt, Inst. Nucl. Phys.) ; Thürauf, M (Tech. U. Darmstadt, Inst. Nucl. Phys.) ; Kröll, Th (Tech. U. Darmstadt, Inst. Nucl. Phys.) ; Krücken, R (Munich, Tech. U.) ; Behrens, T (Munich, Tech. U.) ; Bildstein, V (Munich, Tech. U. ; Heidelberg, Max Planck Inst.) ; Blazhev, A (Cologne U.) ; Bönig, S (Tech. U. Darmstadt, Inst. Nucl. Phys.) ; Butler, P A (Liverpool U.) ; Cederkäll, J (CERN) et al.
The isotopes Cd122,124,126 were studied in a “safe” Coulomb-excitation experiment at the radioactive ion-beam facility REX-ISOLDE at CERN. The reduced transition probabilities B(E2;0g.s.+→21+) and limits for the quadrupole moments of the first 2+ excited states in the three isotopes were determined. [...]
2014 - 10 p.
- Published in : Phys. Rev. C 89 (2014) 014313
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