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1.
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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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2.
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The new Batch Mode Ion Source for stand-alone operation at the Facility for Rare Isotope Beams (FRIB)
/ Sumithrarachchi, C S (Michigan State U., East Lansing (main)) ; Liu, Y (Michigan State U., East Lansing (main)) ; Rogers, S N (Michigan State U., East Lansing (main)) ; Schwarz, S (Michigan State U., East Lansing (main)) ; Bollen, G (Michigan State U., East Lansing (main)) ; Gamage, N (Michigan State U., East Lansing (main)) ; Henriques, A (Michigan State U., East Lansing (main)) ; Lapierre, A (Michigan State U., East Lansing (main)) ; Ringle, R (Michigan State U., East Lansing (main)) ; Yandow, I (Michigan State U., East Lansing (main)) et al.
Gas stoppers have been used for a long-standing successful science program at Michigan State University with stopped and rare-isotope beams produced by projectile fragmentation. The National Superconducting Cyclotron Laboratory’s Coupled Cyclotron Facility has recently transitioned into the Facility for Rare Isotope Beams (FRIB) laboratory to provide rare isotopes using a high-power superconducting linear accelerator and new production facilities. [...]
2023 - 4 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 541 (2023) 301-304
In : 19th International Conference on Electromagnetic Isotope Separators and Related Topics (EMIS 2022), Daejeon, Korea, 3 - 7 Oct 2022, pp.301-304
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3.
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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
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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4.
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Developments at CERN-ISOLDE’s OFFLINE 2 mass separator facility for studies of molecular ion beams
/ Au, M (CERN ; Mainz U.) ; Bernerd, C (CERN ; Leuven U.) ; Gracia, Y Nel Vila (CERN) ; Athanasakis-Kaklamanakis, M (CERN ; Leuven U.) ; Ballof, J (CERN ; Michigan State U.) ; Bissell, M (CERN) ; Chrysalidis, K (CERN) ; Heinke, R (CERN) ; Le, L (CERN) ; Mancheva, R (CERN ; Leuven U.) et al.
ISOLDE’s Offline 2 laboratory has been upgraded to facilitate development for the production and study of molecular ion beams. New gas injection systems have been implemented for both molecular formation in the ion source and in the radio-frequency quadrupole ion trap used for beam preparation. [...]
2023 - 4 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 541 (2023) 144-147
Fulltext: PDF;
In : 19th International Conference on Electromagnetic Isotope Separators and Related Topics (EMIS 2022), Daejeon, Korea, 3 - 7 Oct 2022, pp.144-147
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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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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
Fulltext: PDF;
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7.
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8.
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A cold electron-impact ion source driven by a photo-cathode – New opportunities for the delivery of radioactive molecular beams?
/ Ballof, Jochen (CERN ; Mainz U.) ; Au, Mia (CERN ; Mainz U.) ; Barbero, Ermanno (CERN) ; Chrysalidis, Katerina (CERN) ; Düllmann, Christoph E. (Mainz U. ; Darmstadt, GSI ; Helmholtz Inst., Mainz) ; Fedosseev, Valentin (CERN) ; Granados, Eduardo (CERN) ; Heinke, Reinhard (CERN) ; Marsh, Bruce A. (CERN) ; Owen, Michael (CERN) et al.
The thick-target ISOL (Isotope mass Separation OnLine) method provides beams of more than 1000 radionuclides of 74 elements. The method is well established for elements with sufficiently high volatility at ca. [...]
arXiv:2110.00651.-
2022 - 8 p.
- Published in : J. Phys. : Conf. Ser. 2244 (2022) 012072
Fulltext: document - PDF; 2110.00651 - PDF;
In : 19th International Conference on Ion Sources (ICIS 2021), Vancouver, BC, Canada, 20 - 24 Sep 2021, pp.012072
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9.
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A concept for the extraction of the most refractory elements at CERN-ISOLDE as carbonyl complex ions
/ Ballof, J. (CERN ; Mainz U.) ; Chrysalidis, K. (CERN ; Mainz U., Inst. Phys.) ; Düllmann, Ch. E. (Mainz U. ; Darmstadt, GSI ; Helmholtz Inst., Mainz) ; Fedosseev, V. (CERN) ; Granados, E. (CERN) ; Leimbach, D. (CERN ; Mainz U., Inst. Phys.) ; Marsh, B.A. (CERN) ; Ramos, J.P. (CERN ; Ecole Polytechnique, Lausanne ; SCK-CEN, Mol) ; Ringvall-Moberg, A. (CERN ; U. Gothenburg (main)) ; Rothe, S. (CERN) et al.
We introduce a novel thick-target concept tailored to the extraction of refractory 4d and 5d transition metal radionuclides of molybdenum, technetium, ruthenium and tungsten for radioactive ion beam production. Despite the more than 60-year old history of thick-target ISOL mass-separation facilities like ISOLDE, the extraction of the most refractory elements as radioactive ion beam has so far not been successful. [...]
arXiv:2108.01745.-
2022-05-17 - 18 p.
- Published in : Eur. Phys. J. A 58 (2022) 94
Fulltext: 2108.01745 - PDF; document - PDF;
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10.
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A porous hexagonal boron nitride powder compact for the production and release of radioactive 11C
/ Stegemann, S (Leuven U.) ; Ballof, J (CERN) ; Cocolios, T E (Leuven U.) ; Correia, J -G (CERN ; IST, Lisbon (main)) ; Dockx, K (Leuven U.) ; Poleshchuk, O (Leuven U.) ; Ramos, J P (Leuven U. ; CERN) ; Schell, J (CERN) ; Stora, T (CERN) ; Vleugels, J (Leuven U.)
A porous pre-sintered hexagonal boron nitride powder compact was recently developed as target for the production of intense $^{11}$C beams for Positron Emission Tomography-aided hadron therapy. In a previous study, this target has been characterized regarding its operational limitations. [...]
2021 - 12 p.
- Published in : J. Eur. Ceramic Soc. 41 (2021) 4086-4097
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