On bursts produced by muons and electrons

The problem of the size fluctuation of bursts produced by muons is considered in the light of the method adopted by us for the evaluation of the mean square deviation of the number of electrons produced in an electron-photon cascade. An explicit simple analytical expression for the mean square deviation of the number of electrons is derived. It is also shown how other problems of experimental interest can be dealt with by the use of multipoint density functions. In particular the sequent correlation functions developed in the earlier paper are used for the bursts produced by electrons. © 1964 Società Italiana di Fisica.