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

Łukasz Kłosowski, Mariusz Piwiński, A. Linek, Małgorzata Grosbart, R. Ciuryło, M. Zawada, Marek Teske, Sara Alfaro, Marcis P. Auzinsh, Dipesh Bhanushali, Ashwin Bhartia, Michael Berghold, Roberto Sennen Brusa, Krzysztof Calik, A. Camper, R. Caravita, F. Castelli, G. Cerchiari, Sruthy Chandran, Ahmad Chehaimi, Sankarshan Choudapurkar, Pietro Conte, Giovanni Consolati, M. Doser, Riley Ferguson, Matthias Germann, Anna Giszczak, Tomasz Sowiński, F. Guatieri, F. P. Gustafsson, Stefan Haider, S. Ḣuck, Christoph Hugenschmidt, Monika Joanna Jakubowska, M. A. Janik, Grzegorz H. Kasprowicz, Kamila Kempny, Gunn Khatri, Adam Ryszard Kisiel, G. Kornakov, V. Krumins, Lidia Lappo, S. Mariazzi, Pawel Moskal, Piyush Pandey, Daniel Pęcak, Luca Penasa, F. Prelz, T. Rauschendorfer, Bharat Singh Rawat, Sushil Kumar Sharma, Estere Teberga, Mira Tockner, Marco Volponi, Carsten Peter Welsch, J. Zieliński, Nicola Zurlo, Volodymyr Rodin, H. Sandaker, L. K. Graczykowski, L. T. Glöggler, Markus Munster, Benjamin Rienaecker

Published Jan 1, 2025• 0 citations

DOI: 10.2139/ssrn.5852780

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The space-charge shift in secular motion resonance of Ca + induced by simultaneously trapped molecular ions was observed through the laser-induced fluorescence of buffer-gas-cooled Ca + ions in a linear Paul trap. The shift in the resonance was measured as a function of the production time of molecular ions. A simple pseudopotential model was developed to explain the space-charge shift and the number of trapped molecular ions was estimated using the model. The method can be used to monitor the total amount of invisible ions in principle, as long as the weak coupling condition is satisfied between the observable ions and the invisible ions.