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Single-photon loading of polar molecules into an optical trap
/ Schellenberg, Bart J (Nikhef, Amsterdam ; U. Groningen (main)) ; Prinsen, Eifion H (Nikhef, Amsterdam ; U. Groningen (main)) ; Nauta, Janko (CERN) ; Pašteka, Lukáš F (U. Groningen (main) ; Nikhef, Amsterdam ; Comenius U.) ; Borschevsky, Anastasia (U. Groningen (main) ; Nikhef, Amsterdam) ; Hoekstra, Steven (U. Groningen (main) ; Nikhef, Amsterdam)
We propose a scheme to transfer molecules from a slow beam into an optical trap using only a single photon absorption and emission cycle. [...]
arXiv:2507.17521.
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2025 - 7.
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Laser spectroscopy and CP-violation sensitivity of actinium monofluoride
/ Athanasakis-Kaklamanakis, M. (CERN ; Leuven U. ; Imperial Coll., London) ; Au, M. (CERN ; Mainz U.) ; Kyuberis, A. (Groningen U.) ; Zulch, C. (Philipps U. Marburg) ; Gaul, K. (Philipps U. Marburg ; Helmholtz Inst., Mainz ; Darmstadt, GSI ; Mainz U., Inst. Phys.) ; Wibowo, H. (York U., England) ; Skripnikov, L. (Unlisted) ; Lalanne, L. (Leuven U. ; CERN) ; Reilly, J.R. (Manchester U. ; CERN) ; Koszorus, A. (CERN ; Leuven U.) et al.
The apparent invariance of the strong nuclear force under combined charge conjugation and parity (CP) remains an open question in modern physics. [...]
arXiv:2507.05224.
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43.
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Theoretical determination of the ionization potentials of ScF, YF, LaF, and AcF
/ Kyuberis, Aleksandra A. (Groningen U.) ; Pasteka, Lukas F. (Groningen U. ; Comenius U.) ; Eliav, Ephraim (Tel Aviv U. (main)) ; Sunaga, Ayaki (Eotvos U.) ; Au, Mia (CERN ; Mainz U.) ; Wilkins, Shane G. (MIT) ; Borschevsky, Anastasia (Groningen U.)
We present a comprehensive theoretical study of the ionization potentials of the MF (M = Sc, Y, La, Ac) molecules using the state-of-the-art relativistic coupled cluster approach with single, double, and perturbative triple excitations (CCSD(T)). We have further corrected our results for higherorder excitations (up to full triples), the QED self-energy and vacuum-polarization contributions. [...]
arXiv:2502.17451.-
2025-04-23 - 8 p.
- Published in : Phys. Rev. A 111 (2025) 042823
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Charge radii of neutron-rich scandium isotopes and the seniority symmetry in the $0f_{7/2}$ shell
/ Bai, S.W. (Peking U., SKLNPT) ; Yang, X.F. (Peking U., SKLNPT) ; Koszorús, Á. (Leuven U.) ; Berengut, J.C. (New South Wales U.) ; Billowes, J. (Manchester U.) ; Bissell, M.L. (Manchester U.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Borschevsky, A. (Groningen U.) ; Campbell, P. (Manchester U.) ; Cheal, B. (Liverpool U.) et al.
Nuclear charge radii of neutron-rich $^{47-49}$Sc isotopes were measured using collinear laser spectroscopy at CERN-ISOLDE. The new data reveal that the charge radii of scandium isotopes exhibit a distinct trend between $N=20$ and $N=28$, with $^{41}$Sc and $^{49}$Sc isotopes having similar values, mirroring the closeness of the charge radii of $^{40}$Ca and $^{48}$Ca. [...]
arXiv:2504.12001.-
2025-05-07 - 7 p.
- Published in : Phys. Rev. Lett. 134 (2025) 182501
Fulltext: 2504.12001 - PDF; publication - PDF;
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Ionization potential of radium monofluoride
/ Wilkins, S.G. (MIT) ; Perrett, H.A. (Manchester U.) ; Udrescu, S.M. (MIT) ; Kyuberis, A.A. (U. Groningen, VSI) ; Pašteka, L.F. (U. Groningen, VSI ; Comenius U.) ; Au, M. (CERN ; Mainz U.) ; Belošević, I. (MIT ; TRIUMF) ; Berger, R. (Philipps U. Marburg) ; Binnersley, C.L. (Manchester U.) ; Bissell, M.L. (Manchester U.) et al.
The ionization potential (IP) of radium monofluoride (RaF) was measured to be 4.969(2)[10] eV, revealing a relativistic enhancement in the series of alkaline earth monofluorides. [...]
arXiv:2408.14673.
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10.
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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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Investigating radioactive negative ion production via double electron capture
/ Nichols, M (Goteborg, ITP) ; Athanasakis-Kaklamanakis, M (CERN ; Leuven U.) ; Borschevsky, A (Groningen U.) ; Cocolios, T E (Leuven U.) ; Crosa-Rossa, R (Groningen U.) ; de Groote, R P (Leuven U.) ; Flanagan, K T (Manchester U.) ; Ruiz, R F Garcia (MIT) ; Geldhof, S (Leuven U.) ; Hanstorp, D (Goteborg, ITP) et al.
The relative cross sections for radioactive negative ion production via double electron capture have been measured for collisions between a 40 keV projectile beam of uranium-238 and potassium vapor. This was performed at the collinear resonance ionization spectroscopy (CRIS) experiment at CERN-ISOLDE and is a step towards measuring the electron affinities (EAs) of elements that cannot be efficiently produced in negative ion sources at radioactive ion beam (RIB) facilities. [...]
2023 - 4 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 541 (2023) 264-267
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In : 19th International Conference on Electromagnetic Isotope Separators and Related Topics (EMIS 2022), Daejeon, Korea, 3 - 7 Oct 2022, pp.264-267
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Opportunities for Fundamental Physics Research with Radioactive Molecules
/ Arrowsmith-Kron, Gordon (Michigan State U.) ; Athanasakis-Kaklamanakis, Michail (CERN ; Leuven U.) ; Au, Mia (CERN ; Mainz U.) ; Ballof, Jochen (CERN ; Michigan State U.) ; Berger, Robert (Philipps U. Marburg) ; Borschevsky, Anastasia (U. Groningen, VSI) ; Breier, Alexander A. (Kassel U.) ; Buchinger, Fritz (McGill U.) ; Budker, Dmitry (Darmstadt, GSI ; UC, Berkeley) ; Caldwell, Luke (JILA, Boulder ; U. Colorado, Boulder ; Colorado U.) et al.
Molecules containing short-lived, radioactive nuclei are uniquely positioned to enable a wide range of scientific discoveries in the areas of fundamental symmetries, astrophysics, nuclear structure, and chemistry. Recent advances in the ability to create, cool, and control complex molecules down to the quantum level, along with recent and upcoming advances in radioactive species production at several facilities around the world, create a compelling opportunity to coordinate and combine these efforts to bring precision measurement and control to molecules containing extreme nuclei. [...]
arXiv:2302.02165.-
2024-07-12 - 119 p.
- Published in : Rep. Prog. Phys. 87 (2024) 084301
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Measuring the electron affinity of polonium
/ Nichols, M ; Athanasakis-Kaklamanakis, M ; Balasmeh, Y ; Borschevsky, A ; Cocolios, T E ; Crosa-Rossa, R ; de Groote, R P ; Fajordo-Zambrano, C ; Flanagan, K T ; Garcia Ruiz, R F et al.
CERN-INTC-2023-011 ; INTC-007.
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2023.
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