[en] The recent status of the EMU01 experiment where nuclear emulsions are used as both target/detector material for horizontally exposed stacks and as detector for vertically exposed chamber plates is discussed. An investigation of the behaviour in the number of produced particles per participating nucleon reveal weak nonlinear effects for the most central collisions. Intermittency index can be obtained from the density distributions for S+Au and S+Ag interactions which corresponds to fractal dimensions somewhat smaller than unity

[en] Target-fragment, shower-particle (meson), interacting-proton (36--400 MeV), and total multiplicities in ¹⁶O+Ag collisions from 5A MeV to 2x10⁵A MeV are studied. The target disintegration exhibits energy independence above 100A MeV even in the most central collisions. Above 5A GeV the energy dependences of the three different categories of particles are similar to those from proton-nucleus interactions. The absolute yield of target fragments is also the same while the yield of protons is twice as large and of shower particles 6--7 times larger in ¹⁶O-induced central collisions as compared to p-nucleus reactions

[en] Non-statistical fluctuations are used to probe the dynamical behaviour of multi-particle production in heavy-ion interactions at ultra-relativistic energies. In a one-dimensional analysis a 1/<ρ>-scaling is established and it is furthermore found that effects from higher-order particle correlations are small. In a two-dimensional analysis it is shown that a small background of particle pairs with a narrow opening angle can distort the observed signal. As an example we estimate the influence of γ-conversion and find that in our experiment γ-conversion alone gives results consistent with the experimental observations from a two-dimensional analysis. Whereas a two-dimensional analysis filters events where two particles are extremely close in phase space, the one-dimensional analysis picks out events with particles clusterd in pseudorapidity, which are at the same time diluted in the azimuthal plane. (orig.)

[en] The scaling behaviour in the fragmentation regions is investigated for ¹⁶O-Em interactions from 3.7 to 200 A GeV. It is found that in both the projectile- and the target-fragmentation regions, the multiplicity and pseudo-rapidity distributions as well as the two-particle pseudo-rapidity correlations are independent of incident energy. The intermittency indices at 14.6, 60 and 200 A GeV are the same within the experimental errors, indicating that the limiting fragmentation hypothesis works with regard to dynamical as well as statistical fluctuations. (orig.)