Secondary particles with energy up to 400 MeV/nucleon emitted in collisions of the 56Fe relativistic ions with the emulsion nuclei

Results are presented of the first experimental investigation of singly and doubly charged particles with energies lower than 400 MeV/nucleon produced at interaction of 56Fe nuclei with light and heavy emulsion nuclei at the incident energy of 100 GeV. The characteristics of the produced particles are considered in framework of the two-stage model of the relativistic ion interaction. The conducted analysis permits to make the following conclusions: 1) a heavier incident nucleus in the average, stronger breaks nuclei-targets of different masses at a rapid stage of collision; 2) contribution of interacted nucleons of the nucleus to nucleons with the energy less than 400 MeV noticeably increases with the growth of the nucleus-projectile mass that can essentially affect the characteristics of fast protons. In this case the process of high-energy α-particle production is not practically changed; 3) angular and energy characteristics of slow protons and α-particles are close for relativistic incident nuclei strongly differing by the mass. Emission of these particles can hardly agree with the evaporation model while the model of burst decay can be suitable for describing the slow stage of collisions with light nuclei and interactions with heavy nuclei with a small impact parameter; 4) no indications of shock wave generation in nuclear substance are revealed in the data obtained