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arXiv · 2510.08440

Spectrometry of Captured Highly Charged Ions Produced Following Antiproton Annihilations

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

We report a proof-of-principle study demonstrating the first capture and time-of-flight spectrometry of highly charged ions (HCIs) produced following antiproton annihilations in a Penning-Malmberg trap. A multi-step nested-trap technique was developed using the \aegis\ experiment to identify annihilation-linked captured ions. The trapping and spectrometry of helium and argon ions demonstrates the approach. This work establishes a foundation for the in-trap synthesis of radioactive HCIs and the study of cold nuclear annihilation fragments, with the long-term goal of enabling a sensitive tool for probing the outer nuclear periphery.

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F. P. Gustafsson, M. Volponi, J. Zielinski, A. Asare, I. Hwang, S. Alfaro Campos, M. Auzins, D. Bhanushali, A. Bhartia, M. Berghold, R. S. Brusa, K. Calik, A. Camper, R. Caravita, F. Castelli, G. Cerchiari, S. Chandran, A. Chehaimi, S. Choudapurkar, R. Ciuryło, P. Conte, G. Consolati, M. Doser, R. Ferguson, M. Germann, A. Giszczak, L. T. Glöggler, Ł. Graczykowski, M. Grosbart, F. Guatieri, N. Gusakova, S. Haider, S. Huck, C. Hugenschmidt, M. Jakubowska, M. A. Janik, G. Kasprowicz, K. Kempny, G. Khatri, A. Kisiel, Ł. Kłosowski, G. Kornakov, V. Krumins, L. Lappo, A. Linek, S. Mariazzi, P. Moskal, M. Münster, P. Pandey, L. Penasa, M. Piwiński, F. Prelz, T. Rauschendorfer, B. S. Rawat, B. Rienäcker, V. Rodin, H. Sandaker, S. Sharma, T. Sowiński, E. Tēberga, M. Tockner, C. P. Welsch, M. Zawada, N. Zurlo. 2025-10-09. Spectrometry of Captured Highly Charged Ions Produced Following Antiproton Annihilations. https://arxiv.org/abs/2510.08440

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