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(Abstract is abridged for arXiv.) Identified mid-rapidity particle spectraand freeze-out properties are presented for 200 GeV pp, 200 GeV dAu and 62.4GeV Au-Au collisions, measured in the STAR-TPC. Evolution of the identifiedparticle spectra ($\pi^{\pm}$, $K^{\pm}$, p and $\overline{p}$) with chargedparticle multiplicity and event centrality is investigated in detail. Thermalmodel fits to the measured particle ratios yield a chemical freeze-outtemperature $\sim$ 155 MeV in 200 GeV pp, 200 GeV dAu and 62.4 GeV Au-Aucollisions. The extracted chemical freeze-out temperature is close to thecritical phase transition temperature predicted by lattice QCD calculations.The kinetic freeze-out temperature extracted from hydrodynamically motivatedblast-wave models shows a continuous drop from pp, dAu and peripheral tocentral Au-Au collisions, while the transverse flow velocity increases from$\sim$ 0.2 in pp to $\sim$ 0.6 in central 200 GeV Au-Au collisions. The kineticfreeze-out parameters in 62.4 GeV and 200 GeV Au-Au collisions seem to begoverned only by event multiplicity/centrality. In order to study the effect ofresonance decays on the kinetic freeze-out parameters, the data are fitted withthe blast-wave model including resonances. It is found that the thus extractedparameters are consistent with those obtained without including resonances, theresonance decays do not modify the spectral shapes significantly in themeasured $p_{T}$ region in STAR.

Systematics of Identified Particle Production in pp, dAu and Au-Au Collisions at RHIC Energies