It is detected that the strength of field and the pulse width strong influence the threshold of invalidation in the experiment . the field is stronger , the pulse width is bigger , and then the threshold is lower 实验发现,高功率微波的场强、脉宽等参数对计算机失效阈值的影响很大,场强、脉宽越大,则计算机的失效阈值越小。
Second , in this paper the mechanism of hpm action is detailed explained , analyzes systematically the physical mechanism of typical semiconductor device ’ s burnout and invalidation in environment of hpm 其次,对高功率微波的作用机理做了详细的论述,系统分析了典型半导体器件的失效机理,同时,并讨论了结型半导体、 mos等器件的毁伤机制。
The effective permittivity can be used to describe the molecular polarization of the mixture in the reaction and consequently be used to calculate the transmission and absorption of microwave in the reaction mixture 由于等效介电系数常常被用来描述在化学反应中微波的吸收和传输情况，因而，化学反应中反应物的等效介电系数就成为微波化学研究的关键问题之一。
In this dissertation the output windows ’ refection and absorption are analyzed in detail . 1 . with the development of gyrotron , the output power of the gyrotron is higher and higher , but the destruction of output window is more and more outstanding 由于窗片介质损耗因子的存在,当微波通过输出窗时会在窗片中产生高频介质损耗,微波的功率越高,产生的热量就越多。
The key component of a high - power microwave device is the rf structure in which the beam and wave interact . to traveling wave tube ( twt ) . it is the slow - wave structure ( sws ) which basically determine the performance of the twt 高功率微波的重要研究领域之一是高功率微波源，而高功率微波源的核心部件是电子注与波进行互作用的场所，对行波管而言即为慢波系统，它的优劣直接影响高功率微波源的性能。
A virtual cathode oscillator with an axially extracted te10 or te11 mode based on the tomachan accelerator in our laboratory is investigated using the pic simulation code . the tomachan accelerator can run with an electron beam of 400kev and 8 . 9ka 基于tomachan加速器电子束参数设计的轴向提取te10 / te11模虚阴极振荡器,不需要改变束-波作用区结构,只需通过更换提取波导,即可实现te10 / te11模式微波的轴向提取。
In the primary experimental study , the microwave power , the microwave frequency , and the mode are measured , hie relations among the microwave radiation , the intensity of the magnetic field , the position of the magnetic coil , the amplitude of the beam current , and the a - k gap are investigated 在初步的微波实验中，测试了微波的功率、频率和模式，测试了磁场强度和线圈位置对微波辐射输出的影响，测试了束流大小和阴阳极间距对微波辐射输出的影响。实验结果发现微波的功率和模式基本与模拟结果吻合，器件工作稳定，重复性良好。
Based on this arithmetic , the high frequency characteristics of five - cavity with open boundary is calculated by the code written in fortran language . then the transit effect of five modes of five - cavity with open boundary is also calculated using code mathcad and matlab . the results show that the working mode of five - cavity transit tube oscillator is 3 / 6 mode , and the analysis of the theory are in good agreement with the simulation results 根据从基于四腔渡越时间效应的自调制出发，经过一段飘移，然后再采用双间隙提取腔边耦合输出高功率微波的思路，采用粒子模拟方法优化设计出一种峰值功率为1 . 5gw ，频率为9 . 3ghz的六腔渡越辐射振荡器，并研究了它的一系列工作特性。
Plasma technique was introduced in the research of high power microwave ( hpm ) sources in recent decade . the performance of hpm sources is improved much by filling plasma which is promising in this field . filled - plasma travelling - wave tubes ( fptwt ) is a part of them . it is the main task of this paper to research and design fptwt ' s electron optics system and simulate it 近十年来,在高功率微波的研究热潮中,引入了等离子体技术。引入等离子体能显著改善高功率微波源各方面的工作性能,已经成为高功率微波源发展一个颇有前景的新方向,等离子体行波管即是其一个典型代表。
According to the experimental parameters of mpt , the main performance parameters of different propellants have been given by engineering performance computation under designed and working states , which has great importance for the experimental research and the future work . 2 . for helium and argon , the factors which influence on mpt ' s vacuum steady work have been discussed such as the material of microwave tie - in , the distance between the probe and inner - conductor , the position of the inner - conductor , the input power of microwave , the mass flowrate of propellant and the vacuum pressure of environment , and the influence has been discussed of the microwave power and the mass flowrate of propellant on the pressure of the resonance cavity , thrust , reflected power and the temperature of the resonance cavity 论文的工作和新见解主要包括： 1在设计状态和工作状态下，根据mpt的实验参数，对mpt使用不同工质时的性能进行了工程估算，这对mpt现阶段的实验研究和今后的研究有重要的指导意义； 2对于he 、 ar推进工质，讨论微波的接头材料、探针与内导体的间隙、内导体的位置、微波的输入功率、工质的质量流量以及环境真空度对mpt真空启动和稳定工作的影响，并探讨微波的输入功率、工质的质量流量对谐振腔压强、推力、反射功率以及谐振腔温度的影响； 3对于n _ 2 、 h _ 2 、 nh _ 3 、 h _ 2o推进工质，主要讨论与he 、 ar工质不同的特性，并从长远的眼光和工程应用的角度，认为其可行性不容置疑，潜在优势不可忽略，是未来mpt应用的主流推进工质。
