Emissions of fragments and mesons produced in heavy-ion collisions at CSR and related energies
Using a multisource ideal gas (MSIG) model,we reconstruct the transverse emission source in the momentum space for light fragments produced in reactions 86Kr-124Sn at 25 MeV/nucleon and b=7-10 fm based on the theoretical predictions of the Isospin-Dependent Quantum Molecular Dynamics (IDQMD) model.We show that the MSIG model can reasonably describe the IDQMD-predicted results for the azimuthal distribution and the transverse momentum dependence of elliptic flow v2 and fourth-order anisotropic flow v4 but can only qualitatively describe the transverse momentum spectra.The azimuthal distributions of nuclear fragments produced in heavy-ion collisions at intermediate energies are studied by the MSIG model.The calculated results are compared and found to be in agreement with the experimental data of Ca-Ca,Nb-Nb,and Au-Au collisions at 150-800 MeV/nucleon beam energies.Meanwhile,the angular distributions of pions and kaons produced in heavy-ion collisions at the low-energy end (1-2 GeV/nucleon) of high energies are investigated by the MSIG model,too.The calculated results are compared and found to be in agreement with the experimental data of the KaoS Collaboration.
CSR and related energies heavy-ion collisions fragment meson multisource ideal gas model
LIU Fu-Hu(刘福虎) SUN Yan(孙彦) DUAN Mai-Ying(段麦英) LI Jun-Sheng(李俊生)
Institute of Theoretical Physics,Shanxi University,Taiyuan 030006,China Department of Physics,Shanxi Datong University,Datong 037009,China
国际会议
The 13th National Nuclear Physics Conference of China(第十三届全国核物理大会暨第八届会员代表大会)
兰州
英文
24-28
2007-08-22（万方平台首次上网日期，不代表论文的发表时间）