| 数值模拟相对论返波管中电子注参数变化对脉冲缩短现象的影响 |
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| 引用本文： | 张章,宫玉彬.数值模拟相对论返波管中电子注参数变化对脉冲缩短现象的影响[J].西南民族学院学报(自然科学版),2006,32(2):303-307. |
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| 作者姓名： | 张章 宫玉彬 |
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| 作者单位： | 西华师范大学物理与电子信息学院,四川,南充,637002 电子科技大学大功率微波电真空器件技术国防科技重点实验室,四川,成都,610054 |
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| 摘 要： | 脉冲缩短是高功率微波器件中普遍存在的现象,它妨碍了输出微波能量的进一步提高.迄今为止,它仍是高功率微波研究领域中一个尚待解决的问题.本文以相对论返波管为例,用数值模拟的方法研究了电子注参数改变对脉冲缩短现象的影响.研究表明,当该器件运行于脉宽小于100ns的短脉冲时,阴极所发射电子注的膨胀不是导致其中产生脉冲缩短现象的主要因素,但其运行于长脉冲时,则为一重要因素;电子注电压和电流的脉动也会引起脉冲缩短.
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| 文章编号： | 1003-2843(2006)02-0303-05 |
| 修稿时间： | 2005年11月7日 |
A numerical simulation study on the effect of changes in beam parameters on pulse shortening in RBWOS |
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| ZHANG Zhang,GONG Yu-bin.A numerical simulation study on the effect of changes in beam parameters on pulse shortening in RBWOS[J].Journal of Southwest Nationalities College(Natural Science Edition),2006,32(2):303-307. |
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| Authors: | ZHANG Zhang GONG Yu-bin |
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| Abstract: | In the field of high power microwave devices,pulse shortening phenomenon hindering the improvement of microwave output energy is still an unresolved problem.In this paper,we study the influence of changes in the electron beam parameters upon pulse shortening in the relativistic backward wave tube(RBWO) by means of the particle-in-cell method.The research indicates that the expansion of the beam generated from the cathode is not a primary factor causing pulse shortening,when the pulse width is less than 100 ns.However,when the pulse width is much longer,the factor is important.Furthermore,the fluctuation of the beam voltage and current can cause pulse shortening. |
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| Keywords: | pulse shortening high power microwave RBWO electron beam particle-in-cell |
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