Multiplicities of secondary charged particles in interactions of 50-GeV/c. pi. /sup -/ mesons with emulsion nuclei

Average multiplicities are presented for shower particles and for gray and black negatively charged shower particles in interactions of ..pi../sup -/ mesons with momentum 50 GeV/c with emulsion nuclei, according to the interaction groups: quasinucleon, nuclear with a number of strongly ionizing particles less than seven, and with a number of strongly ionizing particles greater than six. Values are presented for the average charge per interaction for these groups. A comparison is made of the experimental dependences of the dispersion of the average number of shower particles on the number of strongly ionizing particles, and of the normalized correlation moment ..gamma../sub 2/=D//sup 2/ on the number of strongly ionizing particles, with the predictions of models.