On the Annihilation Radiation of Positrons

摘要: The annihilation of positrons may occur either (1) when the positron is in motion, or (2) it has already been stopped. In first case, which will be discussed this paper, one two quanta emitted. two-quanta annihilation, was considered by Dirac, between any free bound electron and positron, whereas only very tightly electrons can annihilate a with emission light quantum only. are stopped takes place practically quanta. one-quantum slow extremely unlikely since cannot get to owing its being repelled atomic field.