Production of negatively charged atomic ions inside a linear Paul trap for the formation of antiprotonic atoms

An effective, long-lasting, low-energy source of negatively charged ions was designed, constructed, and tested. The source uses electron dissociative attachment in electron-molecule collisions to form a set of anions inside a linear Paul trap. Iodine I2 molecules were used to obtain pure sets of I− anions. The system was tested, providing about 105 ions produced in less than a minute, which can be stored in the trap and used in further experiments. •A new efficient anion source for experiments with antiprotonic atoms.•A new source of atomic anion beams has been constructed and tested.•The e-molecule collision was used to produce a pure set of low-energy trapped anions.•Produced anions can be used to create antiprotonic atoms in the AEgIS experiment.

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Publication Details

Journal
Radiation Physics and Chemistry
Published
2026-03-31
DOI
https://doi.org/10.1016/j.radphyschem.2026.113884
Primary Topic
Atomic and Molecular Physics
Type
article
Field-Weighted Citation Impact
0.00

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article

Production of negatively charged atomic ions inside a linear Paul trap for the formation of antiprotonic atoms

C.P. Welsch, MA Janik, R.S. Brusa, F.P. Gustafsson et al.
Radiation Physics and Chemistry
Atomic and Molecular Physics
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Production of negatively charged atomic ions inside a linear Paul trap for the formation of antiprotonic atoms

C.P. Welsch, MA Janik, R.S. Brusa, F.P. Gustafsson, M. Volponi, S. Alfaro Campos, M. Piwiński, P. Moskal, F. Castelli, G. Consolati, L. Lappo, A. Giszczak, D. Pecak, A. Bhartia, M. Auzins, G. Khatri, M. Germann, T. Sowiński, P. Conte, B. Rienäcker, K. Calik, F. Guatieri, T. Rauschendorfer, V. Rodin, S. Choudapurkar, E. Teberga, G. Kasprowicz, A. Linek, D. Bhanushali, B.S. Rawat, V. Krumins, R. Caravita, J. Zieliński, A. Camper, G. Cerchiari, S. Huck, M. Doser, P. Pandey, Ł. Kłosowski, H. Sandaker, N. Gusakova, L.T. Glöggler, C. Hugenschmidt, F. Prelz, G. Kornakov, M. Teske, M. Zawada, M. Münster, S. Sharma, K. Kempny, A. Chehaimi, R. Ferguson, L. Penasa, R. Ciuryło, S B Haider, Ł. Graczykowski, S. Chandran, M. Tockner, M. Jakubowska, N. Zurlo, M. Grosbart, S. Mariazzi, M. Berghold, A. Kisiel
article en

Abstract

An effective, long-lasting, low-energy source of negatively charged ions was designed, constructed, and tested. The source uses electron dissociative attachment in electron-molecule collisions to form a set of anions inside a linear Paul trap. Iodine I2 molecules were used to obtain pure sets of I− anions. The system was tested, providing about 105 ions produced in less than a minute, which can be stored in the trap and used in further experiments. •A new efficient anion source for experiments with antiprotonic atoms.•A new source of atomic anion beams has been constructed and tested.•The e-molecule collision was used to produce a pure set of low-energy trapped anions.•Produced anions can be used to create antiprotonic atoms in the AEgIS experiment.

Radiation Physics and ChemistryVol. 245
České Vysoké Učení Technické v Praze, CERN, Bundesministerium für Bildung und Forschung, Narodowe Centrum Nauki, Politechnika Warszawska, Ministerstwo Edukacji i Nauki, Norges Forskningsråd, Istituto Nazionale di Fisica Nucleare, Engineering and Physical Sciences Research Council, High Energy Physics, European Social Fund
Openalex Percentile: Top 31%
Atomic and Molecular Physics
DOIOpen Access PDFOpenAlex
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