Helium-3 production from Pb plus Pb collisions at SPS energies with the UrQMD model and the traditional coalescence afterburner

被引：10

作者：

Li, QingFeng ^{[1
]}

Wang, YongJia ^{[1
]}

Wang, XiaoBao ^{[1
]}

Shen, CaiWan ^{[1
]}

机构：

[1] Huzhou Univ, Sch Sci, Huzhou 313000, Peoples R China

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2016年 / 59卷 / 03期

基金：

中国国家自然科学基金;

关键词：

rapidity distribution of Helium-3; UrQMD model; coalescence model; Lorentz transformation; HEAVY-ION COLLISIONS; SYMMETRY ENERGY; BALANCE ENERGY; DYNAMICS;

D O I：

10.1007/s11433-015-5775-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A potential version of the UrQMD (UrQMD/M) transport model and a traditional coalescence model are combined to calculate the production of He-3 fragments in central Pb+Pb collisions at SPS energies 20-80 GeV/nucleon. It is found that the Lorentz transformation in the afterburner influences visibly the He-3 yield and should be considered in calculations. The rapidity distribution of He-3 multiplicities (including the concave shape) can be described well with UrQMD/M when it stops during t(cut)=(100 +/- 25) fm/c and the coalescence afterburner with one parameter set of (R-0,P-0)=(3.8 fm, 0.3 GeV/c) is taken into use afterwards.

引用

页码：1 / 4

页数：4

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