| 粒子模拟中的电磁场算法 |
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| 引用本文： | 刘大刚, 周俊, 杨超. 粒子模拟中的电磁场算法[J]. 强激光与粒子束, 2010, 22(06). |
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| 作者姓名： | 刘大刚 周俊 杨超 |
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| 作者单位： | 1.电子科技大学 物理电子学院, 成都 61 0054 |
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| 摘 要： | 研究了粒子模拟中的中心差分、时偏及高品质因数时域有限差分电磁场算法，分析了相应的数值噪声机理。着重探讨了时偏及高品质因数算法对高频噪声的滤波特性，给出了这两种算法的适用范围。通过对相对论返波管的计算，将3种算法的计算结果进行了比较，进一步验证了时偏及高品质因数算法对高频数值噪声的滤波特性。
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| 关 键 词： | 粒子模拟 FDTD算法 高频噪声 相对论粒子 |
Electromagnetic field algorithms in particle-in-cell simulation |
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| liu dagang, zhou jun, yang chao. Electromagnetic field algorithms in particle-in-cell simulation[J]. High Power Laser and Particle Beams, 2010, 22. |
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| Authors: | liu dagang zhou jun yang chao |
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| Affiliation: | 1. School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China |
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| Abstract: | The centered-difference, time-biased and FDTD algorithms in particle-in-cell (PIC) simulation are studied and the stability conditions of these algorithms are given. The high-frequency noise filtering characters of time-biased and high quality algorithms are analysed and their application scopes are discussed. The calculated results of the three algorithms are compared for the computation of a relativistic backward wave oscillator, further verifying their filtering characters. |
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| Keywords: | pic simulation fdtd method high-frequency noise relativistic particle |
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