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1.
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Voltage scanning and technical upgrades at the Collinear Resonance Ionization Spectroscopy experiment
/ Athanasakis-Kaklamanakis, Michail (CERN ; Leuven U.) ; Reilly, Jordan R. (Manchester U.) ; Koszorús, Ágota (CERN) ; Wilkins, Shane G. (MIT) ; Lalanne, Louis (Leuven U.) ; Geldhof, Sarina (Leuven U.) ; Nichols, Miranda (Goteborg, ITP) ; Wang, Quanjun (Lanzhou U. (main)) ; van den Borne, Bram (Leuven U.) ; Chorlton, David (Manchester U.) et al.
To optimize the performance of the Collinear Resonance Ionization Spectroscopy (CRIS) experiment at CERN-ISOLDE, technical upgrades are continuously introduced, aiming to enhance its sensitivity, precision, stability, and efficiency. Recently, a voltage-scanning setup was developed and commissioned at CRIS, which improved the scanning speed by a factor of three as compared to the current laser-frequency scanning approach. [...]
arXiv:2303.15312.-
2023-05-17 - 10 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 541 (2023) 86-89
Fulltext: 2303.15312 - PDF; Publication - PDF;
In : 19th International Conference on Electromagnetic Isotope Separators and Related Topics (EMIS 2022), Daejeon, Korea, 3 - 7 Oct 2022, pp.86-89
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2.
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10.17181/CERN-OPEN-2022-015
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3.
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Optimizing Ti:Sapphire laser for quantitative biomedical imaging
/ James, Jeemol (Gothenburg U.) ; Thomsen, Hanna (Gothenburg U.) ; Enger, Jonas (Gothenburg U.) ; Ericson, Marica B (Gothenburg U.) ; Hanstorp, Dag (Gothenburg U.) ; Alemán Hérnandez, Felipe Ademir (Gothenburg U.) ; Rothe, Sebastian (CERN)
Ti:Sapphire lasers are powerful tools in the field of scientific research and industry for a wide range of applications such as spectroscopic studies and microscopic imaging where tunable near-infrared light is required. To push the limits of the applicability of Ti:Sapphire lasers, fundamental understanding of the construction and operation is required. [...]
2018
- Published in : Proc. SPIE 10498 (2018) 1049824
In : SPIE BiOS 2018, San Francisco, California, United States, 27 Jan - 1 Feb 2018
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4.
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The electron affinity of astatine
/ Leimbach, David (CERN ; U. Gothenburg (main) ; Mainz U., Inst. Phys.) ; Karls, Julia (U. Gothenburg (main)) ; Guo, Yangyang (U. Groningen, VSI) ; Ahmed, Rizwan (NCP, Islamabad) ; Ballof, Jochen (CERN ; Mainz U., Inst. Kernchem.) ; Bengtsson, Lars (U. Gothenburg (main)) ; Pamies, Ferran Boix (CERN) ; Borschevsky, Anastasia (U. Groningen, VSI) ; Chrysalidis, Katerina (CERN ; Mainz U., Inst. Phys.) ; Eliav, Ephraim (Tel Aviv U. (main)) et al.
One of the most important properties influencing the chemical behavior of an element is the electron affinity (EA). Among the remaining elements with unknown EA is astatine, where one of its isotopes, $^{211}$At, is remarkably well suited for targeted radionuclide therapy of cancer. [...]
arXiv:2002.11418.-
2020 - 9 p.
- Published in : Nature Commun. 11 (2020) 3824
Fulltext: PDF; Fulltext from publisher: PDF;
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5.
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6.
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Upgrades of the GANDALPH photodetachment detector towards the determination of the electron affinity of astatine
/ Leimbach, David (Johannes Gutenberg Universitaet Mainz (DE)) ; Rothe, Sebastian (CERN) ; Bengtsson, Lars (Gothenburg University (SE)) ; Ringvall Moberg, Annie (Gothenburg University (SE)) ; Sundberg, Julia (Gothenburg University (SE)) ; Wendt, Klaus (Johannes Gutenberg Universitaet Mainz (DE)) ; Hanstorp, Dag (Gothenburg University (SE))
The Gothenburg ANion Detector for Affinity measurements by Laser PHotodetachment (GANDALPH) has recently been built for measurements of electron affinities (EA) of radioisotopes. A first measurement campaign is aimed towards the determination of the EA of astatine, the rarest naturally occurring element on earth. [...]
CERN-ISOLDE-CONF-2019-005.-
Geneva : CERN, 2020 - 3 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 463 (2020) 277-279
Fulltext: PDF;
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7.
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Laser photodetachment of radioactive $^{128}$I$^−$
/ Rothe, Sebastian (CERN) ; Sundberg, Julia (CERN ; U. Gothenburg) ; Welander, Jakob (U. Gothenburg) ; Chrysalidis, Katerina (CERN ; Mainz U., Inst. Phys.) ; Goodacre, Thomas Day (CERN) ; Fedosseev, Valentin (CERN) ; Fiotakis, Spyridon (CERN) ; Forstner, Oliver (U. Jena) ; Heinke, Reinhard (Mainz U., Inst. Phys.) ; Johnston, Karl (CERN) et al.
The first experimental investigation of the electron affinity (EA) of a radioactive isotope has been conducted at the CERN-ISOLDE radioactive ion beam facility. The EA of the radioactive iodine isotope (128)I (t (1/2) = 25 min) was determined to be 3.059 052(38) eV. [...]
2017 - 10 p.
- Published in : J. Phys. G 44 (2017) 104003
Fulltext: PDF;
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8.
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Selective laser photodetachment of intense atomic and molecular negative ion beams with the ILIAS RFQ ion beam cooler
/ Martschini, Martin (Vienna U.) ; Pitters, Johanna (Vienna U. ; CERN) ; Moreau, Tobias (Vienna U.) ; Andersson, Pontus (Vienna U. ; Chalmers U. Tech.) ; Forstner, Oliver (Vienna U. ; Jena U.) ; Hanstorp, Dag (U. Gothenburg (main)) ; Lachner, Johannes (Vienna U.) ; Liu, Yuan (Oak Ridge) ; Priller, Alfred (Vienna U.) ; Steier, Peter (Vienna U.) et al.
The Ion Laser InterAction Setup (ILIAS) project at the University of Vienna aims at the exploration of negative ion beam filtering by selective laser photodetachment for applications in accelerator mass spectrometry (AMS). A gas-filled radio frequency quadrupole (RFQ) is used to decelerate and cool negative atomic and molecular ion beams with intensities of up to several hundred nA, and overlap them collinearly with a continuous wave (cw) laser beam. [...]
2017 - 9 p.
- Published in : Int. J. Mass Spectrometry 415 (2017) 9-17
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9.
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Measurement of shifts in the electron affinities of chlorine isotopes
/ Hanstorp, Dag (University of Gothenburg) ; Jakob, Welander (University of Gothenburg) ; Leimbach, David (University of Gothenburg) ; Ringvall-Moberg, Annie (University of Gothenburg and CERN) ; Godefroid, Michel (Université libre de Bruxelles) ; Jönsson, Per (Malmö University) ; Ekman, Jörgen (Malmö University) ; Brage, Tomas (Lund University) ; Wendt, Klaus (Johannes-Gutenberg Universität Mainz) ; Heinke, Reinhard (Johannes-Gutenberg Universität Mainz) et al.
CERN-INTC-2017-053 ; INTC-P-515.
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2017.
Fulltext - Full text - Full text
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10.
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Laser photodetachment of radioactive ions: towards the determination of the electronegativity of astatine
Reference: Poster-2017-585
Created: 2017. -1 p
Creator(s): Rothe, Sebastian; Sundberg, Julia; Welander, Jakob Emanuel; Chrysalidis, Katerina; Day Goodacre, Thomas [...]
Negatively charged ions are mainly stabilized through the electron correlation effect. A measure of the stability of a negative ion is the electron affinity, which the energy gain by attaching an electron to a neutral atom. This fundamental quantity is, due to the almost general lack of bound excited states, the only atomic property that can be determined with high accuracy for negative ions. We will present the results of the first laser photodetachment studies of radioactive negative ions at CERN-ISOLDE. The photodetachment threshold for the radiogenic iodine isotope 128I was measured successfully, demonstrating the performance of the upgraded GANDALPH experimental beam line. The first detection of photo-detached astatine atoms marks a milestone towards the determination of the EA of this radioactive element.
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