共查询到19条相似文献,搜索用时 78 毫秒
1.
本文研究了振幅螺旋变化周期Wiggler场自由电子激光器的增益特性。利用逐阶近似分析法解析了相对论电子在这种Wiggler场中运动的洛仑兹力方程和能量方程,获得了这种激光器的增益表达式。在给定其物理参数情况下,计算了这种激光器的增益。结果表明,激光器增益比同等物理参数下振幅恒定周期Wiggler场自由电子激光器有较明显提高;恒定振幅 相似文献
2.
永磁Wiggler磁场的设计和小周期数装置的实验 总被引:1,自引:0,他引:1
Wiggler磁场是自由电子激光器的重要组成部分。根据计算分析和自由电子激光器的总体设计要求,提出了Wiggler磁场的设计考虑。研制出小周期数装置,在改变磁隙、周期、磁块尺寸以及材料的情况下进行了测量,同时测量了磁场的正弦分布。结果表明,设计并研制的小周期数Wiggler磁场满足总体要求,可用于自由电子激光器。 相似文献
3.
本文用逐阶近似法分析了相对论电子洛仑兹力方程和能量方程,获得了振幅螺旋变化的周期wiggler场自由电子激光器的增益表达式。结果表明,这种激光器的增益比采用恒定振幅周期wiggler场自由电子激光器有较明显的提高。 相似文献
4.
5.
振幅压缩志是与普通压缩相干态性质不同的另一类非经典光场态,由于它具有比后者更小的光子数起伏而在最近受到重视。本文应用文献中最新提出的非经典在光场的判据,讨论了振幅压缩态的P表示特性。我们得到了用来确定振幅压缩态P表示特性的特征函数具有如下形式: 相似文献
6.
最近预言的振幅压缩态由于可以具有比压缩相干态更小的光子数噪声而受到重视。本文用文献中最新提出的非经典光场的判据讨论了振幅压缩态的P表示特性,发现它本质上与光子数本征态一样,也是通过复平面一点上的奇异性来表现其非经典性的。 相似文献
7.
8.
本文研究了适用于自由电子激光器的室温脉冲螺旋Wiggler磁体,对其设计构思、磁场特性和设计参数进行了分析和计算。作者在文中还研究并设计了螺旋Wiggler磁体的大电流宽脉冲供电电源;分析了脉冲电流的时间特性对产生自由电子激光的影响程度。 相似文献
9.
10.
11.
12.
Shi-Chang Zhang Zhong Zhang Shie Zhou 《Journal of Infrared, Millimeter and Terahertz Waves》1988,9(12):1107-1117
3-D motion of electrons with on-axis and off-axis guiding centers in realistic helical wiggler and axial guide field is analysed. It is found that purely helical orbits couldnot exist for the electrons with off-axis guiding centers, except for those with on-axis guiding centers. Perturbation solutions of the electron's velocity and orbit averaged over the cyclotron angle are derived. Our calculations indicate the divergence of the electron orbits near resonance. 相似文献
13.
《Electron Devices, IEEE Transactions on》1966,13(12):930-934
The general solution of the electron trajectory equation in a periodic magnetic field is derived in the form of series expansion, assuming laminar electron flow and small perturbation. It is concluded that if the cathode is not very heavily immersed in a magnetic field, beam focusing by a periodic magnetic field would be almost equivalent to that by a uniform magnetic field except near the unstable region. Under these restrictions, each focusing system would give almost the same beam ripple (in magnitude and phase) under the same injection conditions into the focusing system. It is also found that the first stable region of beam perturbation in the periodic magnetic field becomes narrower as the flux threading the cathode increases or the period of the magnetic field decreases, as far as linearization of the path equation is possible. 相似文献
14.
D. Yu. Kopeichenko I. N. Onishchenko G. V. Sotnikov 《Journal of Communications Technology and Electronics》2007,52(8):835-841
The electrodynamic analysis of the topography of magnetic fields generated in a spatially periodic structure is performed. The structure is a solenoid containing periodically spaced rings made from materials with different electric and magnetic properties. The system of equations relating the amplitudes of spatial harmonics of the magnetic field is derived and numerically analyzed. Dependences of the amplitudes of longitudinal and transverse components of the modulated magnetic field on the ring dimensions, the current frequency, and the magnetic and electric properties of the ring materials are investigated. The field amplitudes obtained during the complete electrodynamic analysis are compared with the amplitudes of a periodic magnetic field obtained in the impedance approximation. 相似文献
15.
本文用扰动法来分析电子在具有双曲函数型摇摆场和轴向导引场中的离轴运动轨道和速度。发现了电子运动存在着丰富的回旋谐振频谱,有基波即磁共振和高次谐波回旋谐振和反回旋谐振,并且存在分数谐振和反谐振。 相似文献
16.
Jing-Qiang Wu 《Journal of Infrared, Millimeter and Terahertz Waves》1987,8(8):827-850
On the base of the reference (1), making use of the linear kinetic theory, gyromonotron with an axial combining periodic magnetic field has been analysed in detail. The formulas of electron beam to wave interaction power, frequency shift and starting current, etc. have been derived. 相似文献
17.
分析了相对论电子在空间周期磁场中的运动轨迹.在一定条件下,电子在垂直原始入射方向上的运动是简谐的,利用谐振子模型求出了它的辐射频谱和频宽;最后讨论了运动的非谐性.得到辐射频谱分布将是与电子的初速度、磁场强度有关. 相似文献
18.
STUDY OF GYROMONOTRON WITH A COMBINING PERIODIC MAGNETIC FIELD AND A COAXIAL CYCLOTRON ELECTRON BEAM
吴坚强 《电子科学学刊(英文版)》1989,6(2):129-139
On the basis of a work of Wu Jianqiang et al.(1987),by making use of the linear kinetictheory,the gyromonotron with a combining periodic magnetic field and a coaxial cyclotron electron beam hasbeen analysed in detail.And the formulas of the electron beam to wave interaction power,frequency shift andstarting current,etc.have been derived. 相似文献