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1.
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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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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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3.
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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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4.
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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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5.
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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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© CERN Geneva
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6.
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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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7.
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Isobar Suppression by Photodetachment in a Gas-Filled RF Quadrupole Ion Guide
/ Liu, Yuan ; Beene, James R ; Havener, Aaron ; Havener, Charles ; Liang, Felix
A novel method is described for selective suppression of isobar contaminants in negative radioactive ion beams. Negative ion beams extracted from an ion source were decelerated to low energies and injected into a gas-filled radio-frequency quadrupole (RFQ) ion guide where the ions were cooled and unwanted ions were selectively removed by non-resonant photodetachment with photons of sufficient energy. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3250
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8.
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In-Situ Electron Cyclotron Resonance (ECR) Plasma Potential Determination Using an Emissive Probe
/ Meyer, Fred W ; Jong You, Hyun ; Liu, Yuan
In this paper, real-time, in-situ, plasma potential measurements are reported for an ECR ion source and correlated with extracted beam characteristics. The local real-time plasma potential of the ORNL CAPRICE ECR ion source was measured using an emissive probe, which was inserted perpendicularly from the plasma chamber wall at the mid-plane of the ECR zone between one of the six radial loss cones of the magnetic field structure, where perturbation of the main ECR plasma is expected to be small. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2035
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9.
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Radioactive Ion Beam Development at the Holifield Radioactive Ion Beam Facility
/ Stracener, Dan ; Alton, Gerald ; Beene, James R ; Bilheux, Hassina Z ; Bilheux, Jean-Christophe ; Blackmon, Jeff C ; Carter, Ken ; Dowling, Darryl ; Juras, Raymond ; Kawai, Yoko et al.
Radioactive beams are produced at the Holifield Radioactive Ion Beam Facility (HRIBF) at Oak Ridge National Laboratory using the Isotope Separator On-Line (ISOL) technique. Radioactive nuclei are produced in a thick target via irradiation with energetic light ions (protons, deuterons, helium isotopes) and then post-accelerated to a few MeV/nucleon for use in nuclear physics experiments. [...]
2005
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.e-proc. TPPE020
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10.
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Laser Ion Source Development for ISOL Systems at RIA
/ Liu, Yuan ; Baktash, Cyrus ; Beene, James R ; Bilheux, Hassina Z ; Brueck, Kim ; Geppert, Christopher ; Havener, Charles ; Kessler, Thomas ; Krause, Herbert F ; Schultz, David R et al.
The isobaric purity of radioactive ion beams (RIBs) is of crucial importance to many experiments. Laser ion sources based on resonant photoionization have already proved to be of great value at existing ISOL RIB facilities. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.1640
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