| 径向渡越时间振荡器的数值模拟 |
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| 引用本文： | 贾云峰,刘永贵,李传胪.径向渡越时间振荡器的数值模拟[J].强激光与粒子束,2002,14(1):95-98. |
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| 作者姓名： | 贾云峰 刘永贵 李传胪 |
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| 作者单位： | 国防科技大学 理学院 定向能技术研究所, 湖南 长沙 410073 |
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| 基金项目： | 国家 8 6 3激光技术领域资助课题 ( 86 3-4 10 -7) |
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| 摘 要： | 用2.5维PIC程序对径向渡越时间振荡器进行了数值模拟，给出了产生微波的详细物理图像，得出了输出微波功率与提取口大小、腔的径向间距、场模式之间的关系。模拟得到了峰值功率约500MW，频率5GHz的TEM1波，起振时间15ns，峰值效率大于30%。
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| 关 键 词： | 渡越时间效应 径向渡越时间振荡器 高功率微波源 PIC方法 |
| 文章编号： | 1001-4322(2002)01-0095-04 |
| 收稿时间： | 2001/4/12 |
| 修稿时间： | 2001年4月12日 |
Numerical simulations of radial transit-time oscillator |
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| JIA Yun-feng,LIU Yong-gui,LI Chuan-lu.Numerical simulations of radial transit-time oscillator[J].High Power Laser and Particle Beams,2002,14(1):95-98. |
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| Authors: | JIA Yun-feng LIU Yong-gui LI Chuan-lu |
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| Institution: | College of Science, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | Employing a 2.5-D PIC code, radial transit-time oscillator, is simulated numerically and the details are presented. The relations between output power and extractor size, radial cavity span and different modes are obtained. The results indicate that with the extractor size decreasing from 1cm to 2mm, the output power increases, and the relation between radial cavity span and output power coincides with that derived from linear theory. Comparison of different modes shows that TEM 1 is the most suitable mode to generate high power microwave. With a 200kV and 8kA electron beam, A 500MW, 5GHz peak output power microwave with mode TEM 1 is generated by simulation. The starting time to oscillate is less than 15ns. The peak efficiency is over 30%. |
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| Keywords: | transit-time effect radial transit-time oscillator high power microwave source PIC simulation |
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