On the peculiarities and analogues of positronium chemical reactions and its radiation yield compared with hydrogen

Application of positronium chemistry to various chemical problems is essentially dependent on the knowledge of analogies and differences in the formation and chemical conversions of positronium and atomic hydrogen. The problem is whether the ''similarity'' of positronium with atomic hydrogen is completely superficial or some common features in their behaviour can be found. The author's experimental results and other publications are analysed in this review in this respect. (author)