Source Density Distribution and Intensity Interferometry in High-Energy Heavy-Ion Collisions

LIU Yi-Ming; HUO Lei; JIANG Yu-Zhen; WANG Shan

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2024年10月30日

Chinese Physics C> 1991, Vol. 15> Issue(2) : 123-130

Source Density Distribution and Intensity Interferometry in High-Energy Heavy-Ion Collisions

Department of Physics,Haerbin University of Technology,1500061 Department of Physics,Kent State University,Kent,Ohio 442422 Department of Physics,University of California,Riverside,CA 92521

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Abstract：
The fitted spatial parameter from intensity interferometry relates to an average radius of the particle-emitting source.The mean-square radius 2> of the source can be estimated by the small relative momentum correlation function.More detailed information about the source density distribution can be inferred from the value of k=2>/2>.A study of central collisions of 1.8A GeV Ar+Pb at the at the bevalac streamer chamber shows that the data are consistent with an a prioriGaussian model for the density distribution at the present level of experimental accuracy.The average radius of the pion source in the reaction is deduced,and a possible picture to describe the expanding pion source is presented.

References

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M. Gyulassy, S. E. Kauffmann, and L. W. Wllson, Phyr. Rev., C120(1979), 2267.[2] W. A. Zajc et al., Phys. Rev., C29(1984), 2173.[3] 刘亦铭，核物理动态，6(1989),30.[4] F. B. Yano and S. E. Koonin, Phys. Lett., 70B(1978), 556.[5] D. Beavis et al., Phys. Rev., C34(I98G), 757.[6] Y. M. Liu et al., Phys. Rev., C34(1986), 1667.[7] R. Stock, IKF90-3, to be published in Annalen der Physik.[8] 刘亦铭等，高能物理与核物理，14(1990)，724,[9] T. J. Humanic, Phys: Rev., C34(1986), 191.[10] S. Nagamiya, Nucl. Phys., A488(1988), 3c.[11] G. Greiner and B. Muller, Phys. Lett., 219B(1989), 199.

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LIU Yi-Ming, HUO Lei, JIANG Yu-Zhen and WANG Shan. Source Density Distribution and Intensity Interferometry in High-Energy Heavy-Ion Collisions[J]. Chinese Physics C, 1991, 15(2): 123-130.

LIU Yi-Ming, HUO Lei, JIANG Yu-Zhen and WANG Shan. Source Density Distribution and Intensity Interferometry in High-Energy Heavy-Ion Collisions[J]. Chinese Physics C, 1991, 15(2): 123-130. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Source Density Distribution and Intensity Interferometry in High-Energy Heavy-Ion Collisions

Corresponding author: LIU Yi-Ming,

Department of Physics,Haerbin University of Technology,1500061 Department of Physics,Kent State University,Kent,Ohio 442422 Department of Physics,University of California,Riverside,CA 92521

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1991-02-05

Abstract: The fitted spatial parameter from intensity interferometry relates to an average radius of the particle-emitting source.The mean-square radius 2> of the source can be estimated by the small relative momentum correlation function.More detailed information about the source density distribution can be inferred from the value of k=2>/2>.A study of central collisions of 1.8A GeV Ar+Pb at the at the bevalac streamer chamber shows that the data are consistent with an a prioriGaussian model for the density distribution at the present level of experimental accuracy.The average radius of the pion source in the reaction is deduced,and a possible picture to describe the expanding pion source is presented.