Two Notes On the Probability of Radiative Transitions

Abstract

In 1 we compute the rate at which electrons and protons should, on Dirac's theory of electrons and protons, annihilate each other; this gives a mean life time for matter of the order of 10^-10 sec. In 2 we compute by Dirac's radiation theory the relative probability of radiative and radiationless transitions; we obtain an expression substantially equivalent to that derived by Heisenberg and Pauli.

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