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1.
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Electromagnetic properties of indium isotopes illuminate the doubly magic character of $^{100}$Sn
/ Karthein, J. (MIT) ; Ricketts, C.M. (Manchester U.) ; Garcia Ruiz, R.F. (MIT ; Manchester U. ; CERN) ; Billowes, J. (Manchester U.) ; Binnersley, C.L. (Manchester U.) ; Cocolios, T.E. (Leuven U.) ; Dobaczewski, J. (York U., England ; Warsaw U.) ; Farooq-Smith, G.J. (Leuven U.) ; Flanagan, K.T. (Manchester U.) ; Georgiev, G. (IJCLab, Orsay) et al.
Our understanding of nuclear properties in the vicinity of $^{100}$Sn, suggested to be the heaviest doubly magic nucleus with equal numbers of protons (Z=50) and neutrons (N=50), has been a long-standing challenge for experimental and theoretical nuclear physics. Contradictory experimental evidence exists on the role of nuclear collectivity in this region of the nuclear chart. [...]
arXiv:2310.15093.-
2024-09-30 - 20 p.
- Published in : Nature Phys. 20 (2024) 1719-1725
Fulltext: PDF;
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2.
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Targets and ion sources at CERN-ISOLDE — Facilities and developments
/ Rothe, S (CERN) ; Au, M (CERN ; Mainz U.) ; Ballof, J (CERN ; Mainz U.) ; Barbero, E (CERN) ; Bissell, M (CERN) ; Boucherie, A (CERN) ; Bovigny, M (CERN) ; Chrysalidis, K (CERN) ; Crepieux, B (CERN) ; Cruikshank, J (CERN) et al.
At the CERN-ISOLDE radioactive ion beam facility, thick targets are irradiated using a beam of 1.4-GeV protons. One of ISOLDE’s key features is the large choice of ion source types and target materials available, enabling us to select the ideal combination for optimal intensity and purity of the isotopes requested by ISOLDE users. [...]
2023 - 7 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 542 (2023) 38-44
In : 19th International Conference on Electromagnetic Isotope Separators and Related Topics (EMIS 2022), Daejeon, Korea, 3 - 7 Oct 2022, pp.38-44
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3.
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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
Fulltext: PDF;
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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4.
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Progress towards the FRIB-EDM3-Frontend: A tool to provide radioactive molecules from isotope harvesting for fundamental symmetry studies
/ Ballof, J (Michigan State U. ; CERN) ; Nusgart, N (Michigan State U.) ; Lalain, P (Michigan State U.) ; Au, M (CERN ; Mainz U.) ; Heinke, R (CERN) ; Leimbach, D (U. Gothenburg (main)) ; Stegemann, S (CERN) ; Schütt, M (CERN) ; Rothe, S (CERN) ; Singh, Jaideep T (Michigan State U.)
The under-construction FRIB-EDM3-instrument was designed to study polar radioactive molecules (such as RaF) in transparent cryogenic solids by laser spectroscopy. The instrument is divided into a frontend- and a backend section. [...]
CERN-ISOLDE-2024-005.-
2023 - 4 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 541 (2023) 224-227
Fulltext: PDF;
In : 19th International Conference on Electromagnetic Isotope Separators and Related Topics (EMIS 2022), Daejeon, Korea, 3 - 7 Oct 2022, pp.224-227
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5.
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In-source and in-trap formation of molecular ions in the actinide mass range at CERN-ISOLDE
/ Au, M. (CERN ; Mainz U.) ; Athanasakis-Kaklamanakis, M. (CERN ; Leuven U.) ; Nies, L. (CERN ; Greifswald U.) ; Ballof, J. (CERN ; Michigan State U., East Lansing (main) ; Philipps U. Marburg) ; Berger, R. (CERN) ; Chrysalidis, K. (CERN) ; Fischer, P. (Greifswald U.) ; Heinke, R. (CERN) ; Johnson, J. (Leuven U.) ; Köster, U. (CERN ; Laue-Langevin Inst.) et al.
The use of radioactive molecules for fundamental physics research is a developing interdisciplinary field limited dominantly by their scarce availability. In this work, radioactive molecular ion beams containing actinide nuclei extracted from uranium carbide targets are produced via the Isotope Separation On-Line technique at the CERN-ISOLDE facility. [...]
arXiv:2303.12215.-
2023-06-02 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 541 (2023) 375-379
Fulltext: 2303.12215 - PDF; Publication - PDF;
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6.
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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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7.
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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-2023-010 ; INTC-P-654.
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2023.
Fulltext
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8.
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10.17181/CERN-OPEN-2022-015
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9.
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Doppler and sympathetic cooling for the investigation of short-lived radioactive ions
/ Sels, S (CERN ; Leuven U.) ; Maier, F M (CERN ; Greifswald U.) ; Au, M (CERN ; Mainz U.) ; Fischer, P (Greifswald U.) ; Kanitz, C (CERN) ; Lagaki, V (CERN ; Greifswald U.) ; Lechner, S (CERN ; TU Vienna) ; Leistenschneider, E (CERN) ; Leimbach, D (CERN ; Mainz U., Inst. Phys. ; U. Gothenburg (main)) ; Lykiardopoulou, E M (British Columbia U. ; TRIUMF) et al.
At radioactive ion beam (RIB) facilities, ions of short-lived radionuclides are cooled and bunched in buffergas-filled Paul traps to improve the ion-beam quality for subsequent experiments. To deliver even colder ions, beneficial to RIB experiments’ sensitivity or accuracy, we employ Doppler and sympathetic cooling in a Paul trap cooler-buncher. [...]
2022 - 19 p.
- Published in : Phys. Rev. Res. 4 (2022) 033229
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10.
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Nuclear moments of indium isotopes reveal abrupt change at magic number 82
/ Vernon, A R (Manchester U. ; MIT ; Leuven U.) ; Garcia Ruiz, R F (MIT ; CERN) ; Miyagi, T (TRIUMF) ; Binnersley, C L (Manchester U.) ; Billowes, J (Manchester U.) ; Bissell, M L (Manchester U.) ; Bonnard, J (York U., England) ; Cocolios, T E (Leuven U.) ; Dobaczewski, J (York U., England) ; Farooq-Smith, G J (Leuven U.) et al.
In spite of the high-density and strongly correlated nature of the atomic nucleus, experimental and theoretical evidence suggests that around particular ‘magic’ numbers of nucleons, nuclear properties are governed by a single unpaired nucleon$^{1,2}$. A microscopic understanding of the extent of this behaviour and its evolution in neutron-rich nuclei remains an open question in nuclear physics$^{3–5}$. [...]
2022 - 10 p.
- Published in : Nature
Fulltext: PDF;
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