Particle multiplicity and energy flow in central sulphur interactions at 200 GeV per nucleon in emulsion

Central interactions of sulphur ions at 200 GeV per nucleon in emulsion and tungsten targets were selected by transverse energy and multiplicity in the framework of the NA 34 (HELIOS) experiment at CERN. A detailed study of charged-particle multiplicity in emulsion and of the energy flow in the fine-grained HELIOS calorimeters is presented for updated event samples. Taking advantage of the wide angular coverage of both the emulsion and the calorimeters, systematic trends of the transverse energy per charged particle are investigated in various rapidity bins, ranging from the target region to the projectile region. (orig.)