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Quadrupole Moments of $^{29}$Mg and $^{33}$Mg
/ Yordanov, Deyan Todorov (Orsay, IPN ; Heidelberg, Max Planck Inst. ; CERN) ; Kowalska, Magdalena (CERN) ; Blaum, Klaus (Heidelberg, Max Planck Inst.) ; De Rydt, Marieke (Leuven U.) ; Flanagan, Kieran T. (Manchester U. ; Leuven U.) ; Himpe, Pieter (Leuven U.) ; Lievens, Peter (Leuven U.) ; Mallion, Stephen (Leuven U.) ; Neugart, Rainer (Heidelberg, Max Planck Inst. ; Mainz U., Inst. Kernchem.) ; Neyens, Gerda (Leuven U.) et al.
The quadrupole moments of 29Mg and 33Mg have been constrained by collinear laser spectroscopy at CERN-ISOLDE. The values are consistent with shell-model predictions, thus supporting the current understanding of light nuclei associated with the "island of inversion"..
arXiv:1905.05580.-
2019-06-12 - 4 p.
- Published in : Hyperfine Interact. 240 (2019) 67
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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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Inflation from Supergravity with Gauged R-symmetry in de Sitter Vacuum
/ Antoniadis, I. (Paris, LPTHE ; Bern U.) ; Chatrabhuti, A. (Chulalongkorn U.) ; Isono, H. (Chulalongkorn U.) ; Knoops, R. (U. Geneva (main) ; KU Leuven, Dept. Phys. Astron.)
We study the cosmology of a recent model of supersymmetry breaking, in the presence of a tuneable positive cosmological constant, based on a gauged shift symmetry of a string modulus that can be identified with the string dilaton. The minimal spectrum of the `hidden' supersymmetry breaking sector consists then of a vector multiplet that gauges the shift symmetry of the dilaton multiplet and when coupled to the MSSM leads to a distinct low energy phenomenology depending on one parameter. [...]
arXiv:1608.02121; CERN-TH-2016-178; CERN-TH-2016-178.-
2016-12-09 - 19 p.
- Published in : Eur. Phys. J. C 76 (2016) 680
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of $^{182}$Hg, $^{184}$Hg, $^{186}$Hg and $^{188}$Hg
/ Wrzosek-Lipska, K (Warsaw U., Heavy Ion Lab ; Leuven U.) ; Rezynkina, K (Leuven U. ; U. Strasbourg) ; Bree, N (Leuven U.) ; Zielińska, M (Warsaw U., Heavy Ion Lab ; IRFU, Saclay) ; Gaffney, L P (Liverpool U. ; Leuven U. ; CERN ; West Scotland U.) ; Petts, A (Liverpool U.) ; Andreyev, A (Leuven U. ; York U., England) ; Bastin, B (Leuven U. ; GANIL) ; Bender, M (Lyon, IPN) ; Blazhev, A (Cologne U.) et al.
The neutron-deficient mercury isotopes serve as a classical example of shape coexistence, whereby at low energy near-degenerate nuclear states characterized by different shapes appear. The electromagnetic structure of even-mass $^{182-188}$ Hg isotopes was studied using safe-energy Coulomb excitation of neutron-deficient mercury beams delivered by the REX-ISOLDE facility at CERN. [...]
2019 - 23 p.
- Published in : Eur. Phys. J. A 55 (2019) 130
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Chemical Purification of Terbium-155 from Pseudo-Isobaric Impurities in a Mass Separated Source Produced at CERN
/ Webster, Ben (Teddington, Natl. Phys. Lab ; Surrey U.) ; Ivanov, Peter (Teddington, Natl. Phys. Lab) ; Russell, Ben (Teddington, Natl. Phys. Lab) ; Collins, Sean (Teddington, Natl. Phys. Lab) ; Stora, Thierry (CERN) ; Ramos, Joao Pedro (CERN ; Leuven U.) ; Köster, Ulli (Laue-Langevin Inst.) ; Robinson, Andrew Paul (Teddington, Natl. Phys. Lab ; Manchester U.) ; Read, David (Teddington, Natl. Phys. Lab ; Surrey U.)
Four terbium radioisotopes ($^{149, 152, 155, 161}$Tb) constitute a potential theranostic quartet for cancer treatment but require any derived radiopharmaceutical to be essentially free of impurities. Terbium-155 prepared by proton irradiation and on-line mass separation at the CERN-ISOLDE and CERN-MEDICIS facilities contains radioactive$^{139}$Ce$^{16}$O and also zinc or gold, depending on the catcher foil used. [...]
2019
- Published in : Sci. Rep. 9 (2019) 10884
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Aspects of Berry phase in QFT
/ Baggio, Marco (Leuven U.) ; Niarchos, Vasilis (Durham U., Dept. of Math. ; Durham U., CPT) ; Papadodimas, Kyriakos (CERN ; U. Groningen, VSI)
When continuous parameters in a QFT are varied adiabatically, quantum states typically undergo mixing---a phenomenon characterized by the Berry phase. We initiate a systematic analysis of the Berry phase in QFT using standard quantum mechanics methods. [...]
arXiv:1701.05587; CERN-TH-2016-241; DCPT-16-55.-
2017-04-11 - 50 p.
- Published in : JHEP 04 (2017) 062
Article from SCOAP3: PDF; Fulltext: PDF; Springer Open Access article: PDF;
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Measurement and microscopic description of odd-even staggering of charge radii of exotic copper isotopes
/ de Groote, R.P. (Leuven U. ; Jyvaskyla U.) ; Billowes, J. (Manchester U.) ; Binnersley, C.L. (Manchester U.) ; Bissell, M.L. (Manchester U.) ; Cocolios, T.E. (Leuven U.) ; Day Goodacre, T. (CERN ; TRIUMF) ; Farooq-Smith, G.J. ; Fedorov, D.V. (St. Petersburg, INP) ; Flanagan, K.T. (Manchester U.) ; Franchoo, S. (Orsay, IPN) et al.
The mesoscopic nature of the atomic nucleus gives rise to a wide array of macroscopic and microscopic phenomena. The size of the nucleus is a window into this duality: while the charge radii globally scale as $A^{1/3}$, their evolution across isotopic chains reveals unanticipated structural phenomena [1-3]. [...]
arXiv:1911.08765.-
2020-04-13 - 5 p.
- Published in : Nature Phys. 16 (2020) 620-624
Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF;
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