Inclusive distributions of π- - mesons produced in π-C interactions at P0 = 40 GeV/c and in pC and pTa interactions 0 = 9.9 G

The energy spectra of secondary π--mesons produced in π-C-interactions at P0=40 GeV/c and in pTa-interactions at P0=9.9 GeV/c and emitted in an angular interval of 0deg <THETAsub(π) <= 180deg in the laboratory coordinate system have investigated. It has been found that the invariant inclusive cross sections of the production of these pions obey the exponential dependence on their kinetic energy T. The slope parameter 1/T0 (T0 is average value of kinetic energy of studied secondary particles) depends on the emission angle of π--mesons. This dependence on cosTHETAsub(π) is nonlinear in character and it is well approximated by square or logarithmic functions in an energy interval of 0.1 GeV <= T <= 1.0 GeV. In the processes under study the presence of cumulative particles does not affect the character of these dependences. There are some indications that the internal energy of the clusters emitting π--mesons does not depend on the type and momentum of the projectile hadron