作者: YongJia Wang , CaiWan Shen , XiaoBao Wang , QingFeng Li
DOI: 10.1007/S11433-015-5775-3
关键词: Afterburner 、 Yield (chemistry) 、 Nuclear physics 、 Helium-3 、 Nucleon 、 Particle physics 、 Physics 、 Nuclear theory 、 Coalescence (physics) 、 Rapidity
摘要: A potential version of the UrQMD (UrQMD/M) transport model and a traditional coalescence are combined to calculate production 3He fragments in central Pb+Pb collisions at SPS energies 20-80 GeV/nucleon. It is found that Lorentz transformation afterburner influences visibly yield should be considered calculations. The rapidity distribution multiplicities (including concave shape) can described well with UrQMD/M when it stops during tcut=(100±25) fm/c one parameter set (R0,P0)=(3.8 fm, 0.3 GeV/c) taken into use afterwards.