Collective behavior of secondary particles in pp-interactions at 70 GeV/c is studied. A Two Stage Gluon Model is offered to describe processes with very high multiplicity. An active role of gluons is shown in multiparticle dynamics. The analysis of multiplicity distributions has revealed a possibility of a thermodynamic interpretation of these interactions. A mechanism of the soft photon production as a signature of the quark--gluon system is proposed.

PACS numbers: 12.38.Qk, 12.40.Ee, 13.85.Rm