▪ Abstract This chapter presents an experimental overview of collective flow phenomena in heavy-ion collisions in the incident energy regime from 100 AMeV to 160 AGeV. The characteristic features of various types of flow are described. The discussion of common dependences on the collision system and bombarding energy focuses on the different time scales of the underlying physics processes. Special emphasis is placed on the presence of structures in the excitation functions. The sensitivity of the available data to changes of nuclear-matter properties, e.g. equation of state, medium effects, and phase transitions, is discussed.

Collective flow in heavy-ion collisions

Inclusive double differential multiplicities of deuterons, {sup 3}H, {sup 3}He, and {sup 4}He measured by E877 for 11.5A GeV/c Au+Au collisions at the Brookhaven's Alternating Gradient Synchrotron (AGS) are presented. Light fragments at beam rapidity are measured for the first time at AGS energies. Beam rapidity deuteron and {sup 4}He yields and transverse slope parameters are found to be strongly dependent on the impact parameter, and the shape of the deuteron spectra is not consistent with that expected for a simple thermal distribution. The deuteron yields relative to proton yields are analyzed in terms of a simple coalescence model. While results indicate an increase in source size compared to collisions of lighter systems at the same energy, they are inconsistent with a simple coalescence model reflected by a rapidity dependence of the coalescence parameter B{sub d}. A new approach utilizing an expanding thermalized source combined with a coalescence code is developed for studying deuteron formation in heavy-ion collisions. The strong dependence of deuteron yields on collective motion implies that deuteron yields relative to those of protons can be used for constraining source parameters. (c) 2000 The American Physical Society.

Light fragment yields from central Au+Au collisions at 11.5A GeV/c

Recent results from E877 for Au+Au collisions at AGS energy

Analyses of collective flow and space-time evolution based on relativistic hydrodynamical model

Quark matter 99 summary: Hadronic signals

Particle production and hydrodynamic flow: Recent results from E877 for Au+Au colliaions at AGS energy

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Particle production and hydrodynamic flow: Recent results from E877 for Au+Au colliaions at AGS energy