有矩形波導(dǎo)和線性擺動器的自由電子激光器的特性研究
CHARACTERISTIC STUDY OF A FREE ELECTRON LASER WITH LINEARLY PALARIZED WIGGLER AND RECTANGULAR WAVEGUIDE
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摘要: 本文研究圓柱電子束通過矩形波導(dǎo)和線性擺動器時產(chǎn)生相干輻射的特性。用線性化弗拉索夫-麥克斯韋方程分析了因?qū)ψ郧⒌碾娮邮胶鈶B(tài)引起擾動產(chǎn)生的不穩(wěn)定性。導(dǎo)出了TMmn模的色散方程并數(shù)值計算了輻射頻率和增長率與電子束能量、軸向磁場、擺動器強(qiáng)度和波長以及電子束半徑的關(guān)系。
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關(guān)鍵詞:
- 自由電子激光器; 矩形波導(dǎo); 線性擺動器; 引導(dǎo)磁場
Abstract: The characteristics of coherent radiation produced by a cylindrical electron beam passing through a rectangular waveguide and linearly polarized wig-gler is studied. The instability analysis is based on the linearized Vlasov-Maxwell equations for the perturbations about a self-consistent beam equilibrium. The dispersion equation of TMmn mode is deduced and by making use of numerical calculation the radiation frequency and growth rate as a function of electron beam energy and radius, axial magnetic field, wiggler field and wave lengthare presented and discus sed. -
Xie Jialin, et al, Striving for first laser of Beijing FEL, First Asian Symposium on Free Electron Laser. Beijing, China, May 27-30, 1993, 36.[2]Yin Y Z, Bekefi G. J. Appl. Phys., 1984, 55(1):33-42.[3]Davidson R C, Yin Y Z. Phys[J].Rev.1984, 30(6):3078-3091 -
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