| Z变换在磁化等离子体电磁脉冲传播时域分析中的应用 |
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| 引用本文： | 黄守江,李芳. Z变换在磁化等离子体电磁脉冲传播时域分析中的应用[J]. 强激光与粒子束, 2005, 17(1): 109-112 |
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| 作者姓名： | 黄守江 李芳 |
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| 作者单位： | 中国科学院,电子学研究所,北京,100080;昆明理工大学,理学院,云南,昆明,650051;中国科学院,电子学研究所,北京,100080 |
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| 基金项目： | 国防科技重点实验室资助课题(51486020203ZK1301)，国家自然科学基金资助课题(10375071，60271027) |
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| 摘 要： | 通过Z变换的方法，将与频率有关的磁化等离子体的介电常数由频域变换到Z域，推导了Z变换形式的时域有限差分法计算式，模拟了电磁脉冲在磁化等离子体中的传播。经过离散傅里叶变换，给出了电磁波通过磁化等离子体后的反射系数和透射系数与频率的关系。还给出了模拟结果和理论值的对比。结果表明，Z变换算法的模拟结果比卷积分更接近理论值。
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| 关 键 词： | 时域有限差分 Z变换 磁化等离子体 反射系数 透射系数 |
| 文章编号： | 1001-4322(2005)01-0109-04 |
| 收稿时间： | 2004-08-10 |
| 修稿时间： | 2003-10-26 |
Time domain analysis of electromagnetic pulse propagation in magnetized plasma using Z transforms |
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| HUANG Shou-jiang. Time domain analysis of electromagnetic pulse propagation in magnetized plasma using Z transforms[J]. High Power Laser and Particle Beams, 2005, 17(1): 109-112 |
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| Authors: | HUANG Shou-jiang |
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| Affiliation: | 1.Institute of Electronics, the Chinese Academy of Sciences, Beijing 100080, China;2. School of Sciences, Kunming University of Science and Technology, Kunming 650051, China |
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| Abstract: | The propagation of electromagnetic pulses in uniform magnetized plasma is studied using the finite-difference time-domain (FDTD) method by means of Z transforms. The Z transform formulation of FDTD method is derived. The reflection and transmission coefficients are computed for electromagnetic waves through the magnetized plasma layer by discrete Fourier transform. The comparison of numerical results with analytical values is presented.It indicates that simulation results by Z transform method are closer to analytical values than recursion convolution algorithm. |
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| Keywords: | FDTD method Z transform Magnetized plasma Reflection coefficient Transmission coefficient |
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