| 圆柱腔内系统电磁脉冲的数值模拟 |
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| 引用本文： | 孙会芳,董志伟,周海京.圆柱腔内系统电磁脉冲的数值模拟[J].强激光与粒子束,2021,33(12):123018-1-123018-6. |
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| 作者姓名： | 孙会芳 董志伟 周海京 |
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| 作者单位： | 北京应用物理与计算数学研究所，北京 100094 |
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| 摘 要： | 应用3维全电磁粒子模拟程序研究腔体的内SGEMP，作为校验，模拟计算了光电子由圆柱腔体端面向内发射的SGEMP模型，并与文献结果进行了对比；使用该程序对圆柱腔体的3维内SGEMP进行模拟研究，得出注量为100 J/m2，特征温度为2 keV的黑体谱X射线，垂直入射高为4.5 cm、半径为7.5 cm的圆柱腔体侧面时，发射电流为20 A，产生的电场最高可达150 kV/m，磁场高达3.0×10?5 T。并对不同X射线注量下的电荷和电场分布情况进行了初步研究。
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| 关 键 词： | 全电磁粒子模拟程序 系统电磁脉冲 角分布 光电子 |
| 收稿时间： | 2021-08-16 |
Simulation study of internal system generated electromagnetic pulse of cylinder cavity |
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| Affiliation: | Institute of Applied Physics and Computational Mathematics, P. O Box 8009, Beijing 100094, China |
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| Abstract: | The internal system generated electromagnetic pulse (SGEMP) effects induced by photoelectrons emitted from cylinder top surface is simulated by the 3D PIC code. First for validation, the results are compared to that from literature. Subsequently, the internal 3D SGEMP effects of the cylinder is studied by this code, the simulated results show the emitting current is 20 A, intense of electric field could get 150 kV/m and magnetic field is 3.0×10?5 T when the blackbody X-ray of temperature 2 keV and fluence 100 J/m2 perpendicularly irradiates the side of cylinder cavity with height of 4.5 cm and radius of 7.5 cm. The space distributions of electrons and electric field are studied elementarily for different X-ray fluences. |
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