LIV. Nuclear reactions produced by slow negative π-mesons

摘要: Abstract Reactions produced by the nuclear capture of slow negative π-mesons have been studied photographic method. The disintegrations light and heavy elements emulsion distinguished methods which are described in detail. Because large number “stars” observed—more than 2500—it has possible to make a statistical approach study disintegrations. general features disintegration nuclei satisfactory agreement with predictions evaporation theory. In addition, emission fast, singly-charged particles observed, most must be attributed an alternative process that evaporation. Preliminary results obtained for frequency energy “spectrum” these particles. conclusion is reached initial capture—the so-called “primary” process—the corresponding rest-mass φ− meson shared among ...