| Abstract: | We present a systematic analysis of two-pion interferometry for the central Au+Au collisions at(snn)~(1/2)=3,5,7,11,17,27,39,62,130 and 200 GeV/c with the help of a multiphase transport(AMPT)model.Emission source-size radius parameters R_(long),R_(out),R_(side)and the chaotic parameter A are extracted and compared with the experimental data.Transverse momentum and aziinuthal angle dependencies of the HBT radii are also discussed for central Au+Au collisions at 200 GeV/c.The results show that the HBT radii in central collisions do not change much above 7 GeV/c.For central collisions at 200 GeV/c,the radii decrease with the increasing of transverse momentum pt but are not sensitive to the aziinuthal angle.These results provide a theoretical reference for the energy scan program of the RHIC-STAR experiment. |
