Pseudorapidity distributions of relativistic singly charged particles in oxygen-induced emulsion interactions at 14.6, 60, and 200 GeV/nucleon are studied. Limiting fragmentation behavior is observed in both the target and projectile fragmentation regions for a central as well as for a minimum-bias sample.Comparisons with the FRITIOF model reveal that the picture of fragmenting strings successfully describes the observed data.
PACS numbers: 25.70.NpThe efforts at CERN (60 and 200 GeV/nucleon) and at BNL (14.6 GeV/nucleon) to accelerate heavy ions to ultrarelativistic energies in order to obtain the necessary requirements for the creation of a quark-gluon plasma state have resulted in a lot of experimental data on various projectile-target combinations. 1,2 The emulsion technique allows studies of produced charged particles and their distributions in space with higher accuracy and a larger acceptance than most of the current counter experiments, although with rather limited statistics. A great advantage with emulsions is that the same projectile-target system can be studied at the three available energies with identical detectors and with identical analysis criteria. In this Letter we will focus on pseudorapidity (77= -lntan0/2) distributions of charged particles emerging from interactions between oxygen and emulsion nuclei.In the EMU01 experiments two complementary exposure techniques were used, each having its own advantages. The technique utilizing vertically exposed emulsion chambers has been described elsewhere. 2 In this Letter we report on results obtained using conventional emulsion stacks exposed horizontally. These stacks consist of 30 BR-2-type pellicles, each of size 20x10x0.06
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.