F. P. Gustafsson [1], M. Volponi [1], J. Zielinski [2], A. Asare [3], I. Hwang [4], S. Alfaro Campos [5,6], M. Auzins [3], D. Bhanushali [5], A. Bhartia [5,7], M. Berghold [8], R. S. Brusa [9,10], K. Calik [2], A. Camper [11], R. Caravita [9,10], F. Castelli [12,13], G. Cerchiari [5,6], S. Chandran [14], A. Chehaimi [9,10], S. Choudapurkar [5,15], R. CiuryÅ‚o, P. Conte [12,16], G. Consolati [12,16], M. Doser [1], R. Ferguson [9,10], M. Germann [1], A. Giszczak [2,1], L. T. Glöggler, Å\udc81. Graczykowski, M. Grosbart [1], F. Guatieri [9,10], N. Gusakova [1,11], S. Haider [1], S. Huck [1,17], C. Hugenschmidt [8], M. Jakubowska [2], M. A. Janik [2], G. Kasprowicz [18], K. Kempny [2], G. Khatri [1], A. Kisiel [2,15], Å\udc81. KÅ‚osowski, G. Kornakov [2], V. Krumins [1,3], L. Lappo [2], A. Linek [15,10,9], S. Mariazzi, P. Moskal [19,20,8], M. Münster, P. Pandey [19,20], L. Penasa [9,10,15], M. PiwiÅ„ski, F. Prelz [12], T. Rauschendorfer [1,16], B. S. Rawat [14,21], B. Rienäcker, V. Rodin [14], H. Sandaker [11], S. Sharma [19,20,22,3], T. SowiÅ„ski, E. TÄ“berga, M. Tockner [5], C. P. Welsch [14,21], M. Zawada [15], N. Zurlo [23,24]
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.