中国空间科学技术

中国空间科学技术 ›› 2025, Vol. 45 ›› Issue (2): 133-139.doi: 10.16708/j.cnki.1000-758X.2025.0031

• 论文 • 上一篇    下一篇

一种单电子追踪微放电蒙特卡洛模拟计算

杨兆伦1,2，张雨婷2，万雪曼2，崔万照1,2,*   

  1. 1.南京航空航天大学 航天学院，南京211106
    2.中国空间技术研究院西安分院 空间微波通信全国重点实验室，西安710100
  • 收稿日期:2023-08-02 修回日期:2023-12-01 录用日期:2024-01-17 发布日期:2025-03-13 出版日期:2025-04-01

A Monte Carlo simulation of single electron tracking calculate multipactor

YANG Zhaolun1,2， ZHANG Yuting2, WAN Xueman2, CUI Wanzhao1,2,*   

  1. 1.College of Aeronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
    2.National Key Laboratory of Space Microwave Communication, China Academy of Space Technology(Xi‘’an), Xi‘’an
    710100, China
  • Received:2023-08-02 Revision received:2023-12-01 Accepted:2024-01-17 Online:2025-03-13 Published:2025-04-01

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摘要： 对于新型卫星通信系统，更多用户、更多通道、更高比特率是未来的必然发展趋势，而微放电是限制大功率空间微波部件向更高功率容量发展的重要技术瓶颈。数值电磁计算可以较为准确的追踪电子运动轨迹和内部场的交互作用，并通过次级电子数目随时间的变化情况作为微放电阈值判据。以此提供了一种较为简化的二维计算模型，结合二次电子发射模型，可用于微波部件薄弱环节的快速计算。以窄间隙的平行平板结构为例计算说明，考虑了低能状态下的电子发射情况，并对一些计算细节进行了说明，将其预测阈值与其他模拟方法进行比较，误差在2dB以内，验证了该方法的有效性。

关键词: 微放电, 二次电子, 数值计算, 单电子追踪, 蒙特卡洛模拟

Abstract: For the new generation of satellite communication systems, more users, more channels and higher bit rates are the inevitable development trend in the future, and multipactor is an important technical bottleneck limiting the development of high-power space microwave components to higher power capacity. Numerical electromagnetic calculations can track the electron trajectories and internal field interactions more accurately, and the change in the number of secondary electrons over time is used as a criterion for the multipactor breakdown threshold. This paper provides a more simplified two-dimensional calculation model, combined with the secondary electron emission model, which can be used for the rapid calculation of the weak links of microwave components, illustrated by the calculation of a parallel flat plate structure with a very narrow gap as an example, which takes into account the electron emission in the low-energy state, and some computational details are illustrated, and its prediction threshold is compared with other simulation methods, with an error of less than 2dB, which verifies the validity of the method.

Key words: multipactor, the secondary electron, numerical calculations, single electron tracking, Monte Carlo simulations