Bosch, F.Hagmann, S.Hillenbrand, P. M.Lane, G. J.Litvinov, Yu A.Reed, M. W.Sanjari, M. S.Stöhlker, ThTorilov, S. YuTu, X. L.Walker, P. M.2025-12-312025-12-312101-6275https://hdl.handle.net/1885/733798547The heavy ion storage rings coupled to in-flight radioactive-ion beam facilities, namely the ability to produce and store for extended periods of time radioactive nuclides in high atomic charge states, for the search of yet unobserved decay mode - bound-state electron-positron pair decay.This work is supported in part by the Helmholtz-CAS Joint Research Group (HCJRG-108), the Australian Research Council (DP120101417 and FT100100991), and the UKScience and Technology Facilities Council.enPublisher Copyright: © The Authors, published by EDP Sciences.2016-09-0510.1051/epjconf/20161230400385012913931