Effect of internal magnetic field on collective flow in heavy ion collisions at intermediate energies
文献类型：期刊论文
| 作者 | Sun, Yuliang2; Wang, Fuqiang2,3; Li, Qingfeng1,2; Wang, Yongjia2 |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2019-06-10 |
| 卷号 | 99期号:6页码:15 |
| ISSN号 | 2469-9985 |
| DOI | 10.1103/PhysRevC.99.064607 |
| 通讯作者 | Sun, Yuliang(sunyl@zjhu.edu.cn) |
| 英文摘要 | The properties of nuclear matter under extreme conditions of high temperature, density, and isospin asymmetry have attracted wide attention in recent years. At present, heavy ion reactions in combination with corresponding model simulations are one of the most important ways to investigate this subject. It is known that a strong magnetic field can be created in heavy ion collisions. However, its effect on the motion of charged particles is usually neglected in previous transport model simulations. In this work, within the ultrarelativistic quantum molecular dynamics (UrQMD) model, the temporal evolution and spatial distribution of the internal magnetic field are calculated. The magnetic field strength is found to reach about eB approximate to 470 MeV2 (B approximate to 8 x 10(16) G) for Au + Au collisions at E-lab = 1 GeV/nucleon with impact parameter of 7 fm. The magnetic field in Cu + Au collisions exhibits somewhat different spatial distribution from that in Au + Au collisions. The magnetic field is found to affect the directed flow of pions at forward and backward rapidities to some extent, dependent of the impact parameter and beam energy while the effect on the elliptic flow is small. In addition, the effects of the magnetic field on the pi(-)/pi(+) ratio over the whole rapidity range and the elliptic flow difference v(2)(n)-v(2)(p) between neutrons and protons at forward and backward rapidities are on the same order as those from the nuclear symmetry energy. The v(2)(n)-v(2)(p) difference in the midrapidity region is not strongly affected by the magnetic field, and the total pi(-)/pi(+) yield ratio is immune to it. It is advisable to include the magnetic field effects in future studies using pion flow, pion yield ratio, and nucleon elliptic flow difference to probe the symmetry energy at super saturation densities. |
| WOS关键词 | QUANTUM MOLECULAR-DYNAMICS ; NUCLEAR SYMMETRY ENERGY ; EQUATION-OF-STATE ; MATTER |
| 资助项目 | National Natural Science Foundation of China[11405054] ; National Natural Science Foundation of China[11875125] ; National Natural Science Foundation of China[11847315] ; National Natural Science Foundation of China[U1832139] ; U.S. Department of Energy[DE-SC0012910] ; Zhejiang Provincial Natural Science Foundation of China[LY18A050002] ; Zhejiang Provincial Natural Science Foundation of China[LY19A050001] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000470858500003 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; U.S. Department of Energy ; Zhejiang Provincial Natural Science Foundation of China |
| 源URL | [http://119.78.100.186/handle/113462/133127]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Sun, Yuliang |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 2.Huzhou Univ, Sch Sci, Huzhou 313000, Peoples R China 3.Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA |
| 推荐引用方式 GB/T 7714 | Sun, Yuliang,Wang, Fuqiang,Li, Qingfeng,et al. Effect of internal magnetic field on collective flow in heavy ion collisions at intermediate energies[J]. PHYSICAL REVIEW C,2019,99(6):15. |
| APA | Sun, Yuliang,Wang, Fuqiang,Li, Qingfeng,&Wang, Yongjia.(2019).Effect of internal magnetic field on collective flow in heavy ion collisions at intermediate energies.PHYSICAL REVIEW C,99(6),15. |
| MLA | Sun, Yuliang,et al."Effect of internal magnetic field on collective flow in heavy ion collisions at intermediate energies".PHYSICAL REVIEW C 99.6(2019):15. |
入库方式： OAI收割
来源：近代物理研究所
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