Abstract
The physicochemical interaction of hydrogen-like positronium and muonium atomic systems, in which the proton is replaced by a positron or a μ+-meson, and mesonic atoms containing a μ–- or a π–-meson instead of an electron have been examined. The nuclear-physical methods for the investigation of processes involving the new atoms have yielded information which significantly supplements that available from the usual research techniques.
The bibliography includes 123 references.