We have measured π ±, K±, P andP spectra from proton and sulfur collisions with nuclear targets at the at beam energies of 450 Gev and 200 Gev per nucleon respectively. For central SA collisions we see that kaons and (anti)protons have large transverse energies. Protons are moved into central rapidity by rescattering where they annhilate antiprotons. The RQMD event generator qualitatively reproduces these trends while Fritjof does not.

π+π+ correlations from S + Pb collisions at 200 GeV/c per nucleon, measured by the focusing spectrometer of the NA44 experiment at CERN, are presented. The large data set, particularly at small values of Qinv, allows determination of the detailed shape of the correlation function. We construct the background by event mixing, and correct for resolution, Coulomb interaction, and distortion of single-particle spectra which produce effects large compared to the statistical errors at small Qinv. An exponential, rather than gaussian, source distribution is slightly favoured, but both are statistically acceptable.

We present preliminary results on the MT spectra of identified pions, kaons, and protons around central rapidity originating from collisions of 450GeV/c incident protons on Be, S and Pb targets as well as 200AGeV/c Sulfur ions on S and Pb targets. Two particle Hanbury‐Brown Twiss interferometry results are also given for identified pion and kaon pairs.