基于电子的晶体摆动场辐射及其稳定性  

Radiation of Electron-based Crystalline Undulator and Its Stability

作　　者：李秀平[1] 王善进[1] 陈琼[1] 罗诗裕[1] 

机构地区：[1]东莞理工学院电子工程学院,广东东莞523808

出　　处：《半导体光电》2013年第1期91-94,共4页Semiconductor Optoelectronics

摘　　要：在经典力学框架内和偶极近似下,引入正弦平方势,把粒子运动方程化为了具有阻尼项和受迫项的摆方程。用Hamiltonian原理和相平面方法讨论了系统的稳定性,并对系统的退道系数、退道长度进行了分析。结果表明,电子和正电子面沟道辐射除了能量适用范围不同外,二者非常类似。它们都可以利用声学方法、机械方法或梯度掺杂法等方法将晶体周期弯曲,而且可以利用现有的加速器提供所需要的粒子束。By introducing Sine-squared potential, the motion equations of the particles were reduced to pendulum equation with damping term and forced term in the framework of classical mechanics and the dipole approximation. The stability of the system was discussed by using Hamihonian principle and phase plane method, and the dechanneling coefficient and dechanneling length of the system were derived. The results show that the face channeling radiation of electrons and positrons are very similar in addition to applicable energy region. The periodic bent crystal can be obtained using the acoustic methods, mechanical methods or gradient doping method, etc. and the required particle beam can be provided using available accelerators.

关 键 词：晶体摆动场辐射 沟道辐射 退道长度 稳定性 

分 类 号：O734[理学—晶体学]