Atanasov, D.Blaum, K.Bosch, F.Brandau, C.Bühler, P.Cakirli, R. B.Chen, X. C.Dillmann, I.Faestermann, T.Gao, B. S.Geissel, H.Gernhäuser, R.Glorius, J.Grisenti, R.Gumberidze, A.Hagmann, S.Hillenbrand, P. M.Kienle, P.Kozhuharov, C.Lane, G.Langer, C.Lederer-Woods, C.Lestinsky, M.Litvinov, S. A.Litvinov, Yu A.Ma, X. W.Najafi, M. A.Nolden, F.Ohtsubo, T.Ozawa, A.Ozturk, F. C.Patyk, Z.Pavicevic, M. K.Petridis, N.Reifarth, R.Sanchez, R.Sanjari, M. S.Schneider, D.Shevelko, V.Spillmann, U.Steck, M.Stöhlker, T.Sun, B. H.Suzaki, F.Suzuki, T.Torilov, S. YuTrageser, C.Trassinelli, M.Tu, X. L.Uesaka, T.Walker, P. M.Wang, M.Weick, H.Winckler, N.Woods, P. J.Xu, H. S.Yamaguchi, T.Yamaguchi, Y.Yan, X. L.Zhang, Y. H.Zhou, X. H.2025-06-112025-06-111742-6588http://www.scopus.com/inward/record.url?scp=85041476436&partnerID=8YFLogxKhttps://hdl.handle.net/1885/733758320Present status of experimental studies of weak decays of highly charged ions is presented. The paper closely follows the progress-report presentation given at the conference. Due to the limited space an emphasis is given to an exhaustive bibliography.This short paper is dedicated to our friends Paul Kienle and Fritz Bosch. This review is based on previous publications of our colleagues from several storage ring collaborations. To all of them we are deeply obliged. This work is in part supported by the Helmholtz/CAS Joint Research Group (HCJRG-108), by the CAS Pioneer Hundred Talents Program, by the Max-Plank-Society, and by the European Research Council (ERC) under the EU Horizon 2020 research and innovation programme (ERC CG 682841 “ASTRUm”).enPublisher Copyright: © Published under licence by IOP Publishing Ltd.2017-08-1810.1088/1742-6596/875/2/01200885041476436