空间电荷波

空间电荷波传播特性的PIC粒子模拟

The PIC Simulation of the Space Charge Wave in Plasmas

在相对论情况下，导出了速调管（klystron）和契伦柯夫（Cherenkov）器件中考虑空间电荷波影响的被调制电子束的谐波电流公式；

Using a relatively strict method , the formulas of the harmonic current of the modulated electron beam in the klystron and Cherenkov devices were derived in the relativistic regime , in which the effect of the space charge wave was taken into account .

空间电荷波只对增益有影响，对带宽没有影响。最后，预估一种L带多束速调管的增益带宽为8.1%。

Finally it estimates the gain bandwidth of a MBK is 8.1 % .

通过空间电荷波函数和等价线性时不变系统脉冲响应特性的测定，引用快速Fourier变换，可求得任意厚度固体电介质中的空间电荷分布。

Through the measuring of space charge-wave function and impulse response of the equivalent LTIS , the space charge distribution in solid dielectrics with arbitrary thickness can be found by fast Fourier transformation algorithm .

介绍了在长脉冲强流相对论速调管（RKA）研究中强流相对论空心电子束（IREBs）的一种小信号群聚理&空间电荷波理论。

A small signal theory & space charge wave physics relevant to modulation properties of intense relativistic electron beams in klystron amplifiers is described in this paper .

强流相对论电子束群聚的空间电荷波理论分析

Space-charge Wave Physics Relevant to Modulation of Intense Relativistic Electron Beams

无引导磁场电子注的空间电荷波

On the Space Charge Wave of the Beam Without External Magnetic Field

自由电子激光中空间电荷波的单电子分析

Single-electron analysis of the space-charge wave in free-electron lasers

在速调管中空间电荷波对辐射波引起的电子束群聚的修正

Space charge wave revision to the electron beam bunching caused by radiation wave in klystron

自由电子激光的空间电荷波理论

Space-charge wave theory of free electron laser

而快空间电荷波则可用于低噪声参量放大器的设计。

And the fast space charge wave can be used for low-noise parametric amplifier design .

多次聚束的空间电荷波理论

Space-charge wave theory of multiple bunching

本文研究了相对论电子注中的空间电荷波，建立了相对论空间电荷波的一般理论。

The space charge theory of relativistic electron beam is studied and the general theory has been formulated in this paper .

数值计算和理论分析表明，在没有电子漂移的情况下，磁化等离子体波导中存在空间电荷波模式。

Theoretical research together with the simulation method show in this situation , space charge modes exist in waveguide without electron drift .

导出了相对论电子注的动功率流定律，求得了相对论空间电荷波的正规模式。

The theorem of relativistic kinetic energy has been derived , and the normalized model of relativistic space charge wave is derived as well .

导出了空间电荷波方程，定义了相对论动电压，并探讨了它的物理含义；

The space charge wave equations for relativistic electron beam have been derived , the relativistic kinetic voltage is defined and the physical explanation is described .

并且分析了空间电荷波对电子束群聚的影响：在小信号时使群聚减小；在大信号时使群聚增强。

The role of the space charge wave is that it makes bunching reduce at small signal , but it makes bunching enhance at large signal .

从负能空间电荷波与电磁波耦合的物理图像出发推导了喇曼散射模式自由电子激光器耦合频率的解析表达式。

Analytical expressions of coupling frequencies of Raman free-electron lasers are deduced based on the physical image of the coupling between negative-energy space-charge wave and EM wave .

在单速、一维假定下，推导了球形收敛电子注上的空间电荷波传播方程和噪声阻抗的变换过程。

Under the assumption that the electron beam is single-velocity and one-dimensional , the transmission equation of space charge wave set up in the conical electron beam is derived and the process of noise impedance transformation is obtained .

利用相对论空间电荷波理论，导出了相对论电子注在轴向磁场引导下沿等离子体内表面传输时的空间电荷波方程；

By means of the relativistic space charge wave theory , the space charge wave equation is obtained when the relativistic electron beam guided by a axial magnetic field is moving along the inner surface of the plasma sheet .

针对不同参数对色散方程进行数值计算，发现当两根电子注之间存在速度差时，通过快慢空间电荷波的相互作用，两电子注引起的双流不稳定性可以产生契伦柯夫辐射；

The numerical results show the two-stream instability of two electron beams can produce Cherenkov radiation through the interaction between the fast space charge wave and the slow space charge wave , and the frequency of radiation can be above the plasma frequency .

发展了相对论空间电荷波理论，并首先把空间电荷波理论用于建立自由电子激光的线性理论，揭示出自由电子激光中电子群聚及电子与波互作用机理的物理本质。

The Relativistic Space - Charge Wave Theory has been developed systematically , and has been first in the world used to establish the Linear Theory of Free Electron Laser . It reveals the physical essentials of the electron bunching process and the particle-wave interaction mechanisms in FEL .

在研究了单电子在静态MILO中的运动规律以后，我们讨论了运动的空间电荷与慢波结构中场的相互作用过程。

The interaction process between space charge and slow wave structure is investigated .

利用考虑了空间电荷效应和束波非线性相互作用的2.5维PIC粒子模拟程序，对非均匀和均匀三腔渡越时间振荡器进行了粒子模拟研究，结果与理论分析相符。

By employing a 2.5D particle-in-cell code , which involves the space-charge-effect and the nonlinear beam-wave interaction , the NTC-TTO and TC-TTO have been simulated , and the simulation results accord with the theoretical analysis .

主动空间试验中空间电荷波向电磁波的转换

Transformation of space-charge wave to electromagnetic wave in active space experiments

并用这两种空间电荷场权函数模拟了螺旋线行波管中注波互作用过程，分析了有限尺寸宏粒子空间电荷场对注波互作用的影响。

The beam-wave interaction in helix TWT has been computed and compared with space-charge field obtained by means of two kinds model of macro particles .