大学物理 ›› 2017, Vol. 36 ›› Issue (6): 15-20.doi: 10.16854/j.cnki.1000-0712.2017.06.004

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相对论重离子碰撞中背景磁场的计算与分析

艾鑫,冯笙琴,钟洋   

  1. 三峡大学理学院,湖北宜昌443002
  • 收稿日期:2016-11-07 修回日期:2016-12-03 出版日期:2017-06-20 发布日期:2017-06-20
  • 通讯作者: 冯笙琴,E-mail: fengsq@ctgu.edu.cn
  • 作者简介:艾鑫( 1993—) ,男,湖北应城人,三峡大学理学院2015 级硕士研究生.
  • 基金资助:
    三峡大学教学研究重点项目( 2016031) 和国家自然科学基金( 11475068) 资助

Calculation and analysis of background magnetic fields in relativistic heavy-ion collisions

AI Xin,FENG Sheng-qin,ZHONG Yang   

  1. College of Science,China Three Gorges University,Yichang,Hubei 443002,China
  • Received:2016-11-07 Revised:2016-12-03 Online:2017-06-20 Published:2017-06-20

摘要: 通过洛伦兹变换推导了相对论匀速运动点电荷磁场公式.在此基础上得到了相对论重离子碰撞中背景磁场的计算公式,并考虑原子核在纵向的厚度.对RHIC 能区Au-Au 碰撞和LHC 能区Pb-Pb 碰撞所产生的磁场进行了数值计算,着重讨论了原点磁场的能量依赖性质并给出了直观的定性解释.

关键词: 相对论重离子碰撞, 洛伦兹变换, 背景磁场

Abstract: The magnetic field formula of a point charge in relativistic form is derived by using the Lorentz transformation. On this basis,we estimate the background magnetic field in relativistic heavy - ion collisions by aking consideration in the longitudinal thickness of nucleus. The numerical calculations of Au -Au collisions in RHIC energy regions and Pb-Pb collisions in LHC energy regions are carried out.Then,we discuss mainly the energy dependence of the magnetic field at original point and give an intuitive,qualitative theory explanation.

Key words: relativistic heavy-ion collisions, Lorentz transformation, background magnetic field