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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.
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Measurement of shifts in the electron affinities along isotopic chains
/ Hanstorp, Dag (Department of Physics, University of Gothenburg, SE 412 96 Gothenburg, Sweden) ; Brage, Tomas (Division of Mathematical Physics, Department of Physics, Lund University, Box 118, SE-221 00 Lund) ; Chrysalidis, Katerina (Institut für Physik, Johannes-Gutenberg Universität, Mainz, Germany) ; Ekman, Jörgen (Materials Science and Applied Mathematics, Malmö University, 205 06 Malmö, Sweden) ; Fedosseev, Valentin (CERN, CH-1211 Geneva 23, Switzerland) ; Forstner, Oliver (Friedrich Schiller Universität, Jena, Germany) ; Giles, Tim (CH-1211 Geneva 23, Switzerland) ; Godefroid, Michel (Université libre de Bruxelles, B 1050 Brussels, Belgium) ; Heinke, Reinhard (Institut für Physik, Johannes-Gutenberg Universität, Mainz, Germany) ; Jönsson, Per (Materials Science and Applied Mathematics, Malmö University, 205 06 Malmö, Sweden) et al.
CERN-INTC-2017-029 ; INTC-I-177.
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2017.
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Determination of the electron affinity of astatine and polonium by laser photodetachment
/ Rothe, S (CERN, Geneva, Switzerland) ; Champion, J (SUBATECH, Ecole des Mines de Nantes, Nantes, France) ; Chrysalidis, K (CERN, Geneva, Switzerland) ; Day Goodacre, T (CERN, Geneva, Switzerland) ; Fedosseev, V (CERN, Geneva, Switzerland) ; Galland, N (CEISAM, Université de Nantes, Nantes, France) ; Hanstorp, D (Department of Physics, Gothenburg University, Gothenburg, Sweden) ; Heinke, R (Institut für Physik, Johannes-Gutenberg Universität, Mainz, Germany) ; Köster, U (Institut Laue-Langevin (ILL), Grenoble, France) ; Kron, T (Institut für Physik, Johannes-Gutenberg Universität, Mainz, Germany) et al.
CERN-INTC-2016-017 ; INTC-P-462.
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2016.
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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
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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
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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
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Enhancing the extraction of laser-ionized beams from an arc discharge ion source volume
/ Martinez Palenzuela, Y (CERN ; Leuven U.) ; Marsh, B A (CERN) ; Ballof, J (CERN ; Mainz U.) ; Catherall, R (CERN) ; Chrysalidis, K (CERN ; Mainz U.) ; Cocolios, T E (Leuven U.) ; Crepieux, B (CERN) ; Day Goodacre, T (CERN ; Manchester U. ; TRIUMF) ; Fedosseev, V N (CERN) ; Huyse, M H (Leuven U.) et al.
The Versatile Arc Discharge and Laser Ion Source (VADLIS) is a recently established ion source for the CERN-ISOLDE radioactive ion beam facility. It offers either electron-impact ionization (VADIS-mode) or resonance laser ionization (RILIS-mode). [...]
2018 - 8 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 431 (2018) 59-66
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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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