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中文摘要：
研究了带电粒子沿磁化等离子体中匀速运动产生辐射的机理．从理论上推导了辐射场强的解析表达式和特征值形式，并通过对特征值讨论得出了辐射条件．采用数值计算得到了磁化等离子体中Chcrenkov辐射特征值分布，发现磁环等离子体回旋频率和等离子体频率对辐射场特征值有直接的影响．通过计算机模拟研究了在该介质中辐射特性及辐射规律，结果表明磁化等离子体中引导磁场强度影响辐射角、辐射强度，并观察到了尾场辐射．
英文摘要：
The theoretical study and simulation of Chercnkov radiation of a charged particle which moves uniformly in magnetized plasma are carried out. The analytical expression of radiated field, eigenvalue, and radiated conditions arc obtained. Numerical calculations of the eigenvalues and contour map of radiated field arc presented. It is found that the cyclotron frequency and plasma frequency affect the distribution of the eigenvalue. Then the PIC-simulation is applied to analyze the characteristics of this radiation. The results show that the amplitude of confinement magnetic field influences the radiation angle and the amplitude of radiation field. And the wakefield is found in the simulation.
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Study of an Extended Interaction Oscillator with A Rectangular Reentra- nce Coupled-cavity in Terahe
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