真空中相对论电子束长程传输过程仿真研究  

Simulation for long-range propagation process of relativistic electron beam in vacuum

作　　者：王庆宇 党怡天 铁维昊 牛浩波 孙安邦 WANG Qingyu;DANG Yitian;TIE Weihao;NIU Haobo;SUN Anbang(State Key Laboratory of Electrical Insulation of Power Equipment,Xi’an Jiaotong University,Xi’an 710049,China;School of Human Settlements and Civil Engineering,Xi’an Jiaotong University,Xi’an 710049,China;China Academy of Space Technology(Xi’an),Xi’an 710100,China)

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,西安740049 [2]西安交通大学人居环境与建筑工程学院,西安710049 [3]中国空间技术研究院西安分院,西安710100

出　　处：《航天器环境工程》2024年第3期319-324,共6页Spacecraft Environment Engineering

基　　金：电力设备电气绝缘国家重点实验室自主课题(编号:EIPE22116)。

摘　　要：为探索相对论电子束流在真空中的传输规律,基于狭义相对论中的洛伦兹变换对相对论电子束流的传输过程进行了仿真研究,分析了相对论电子束流长程传输过程中的空间电磁场分布,并结合相空间理论对电子束流半径随传输距离的变化规律进行探索。结果表明:以相对论速度运动的电荷产生的电场不再是球对称分布,而是趋向于集中在电荷运动的垂直方向上;相对论电子束流半径在传输过程中初期呈指数增长,传输一定距离后呈线性增长。与常规方法相比,洛伦兹变换在处理高能电子束时具有效率优势,有助于解决由于相对论电子束流长程传输模型的空间尺寸较大而导致的计算时间过长的问题。To understand the propagation law of relativistic electron beam in vacuum,the propagation process of relativistic electron beam based on the Lorentz transform in special relativity were simulated in this paper.The spatial electromagnetic field distributions during long-range propagation of relativistic electron beam were analyzed.And the variation law of electron beam radius with propagation distance was explored by phase space theory.The results show that the electric field generated by charges moving at relativistic velocity is no longer spherically symmetric,but tends to be concentrated in the vertical direction of charge motion.The radius of the relativistic electron beam increases exponentially at the beginning of the propagation process,and then become linearly growth after a certain distance of propagation.Compared with conventional methods,the Lorentz transform has efficiency advantage in processing high-energy electron beams,which helps to solve the issue of longer computational hours due to the large spatial size of the relativistic electron beam long-range propagation model.

关 键 词：电动力学 相对论电子束 洛伦兹变换 长程传输 

分 类 号：O463.1[机械工程—光学工程]