| 变参数波振器中小信号增益公式 |
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| 引用本文： | 兰可,施义晋.变参数波振器中小信号增益公式[J].强激光与粒子束,1991,3(1):12-22. |
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| 作者姓名： | 兰可 施义晋 |
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| 作者单位： | 中国原子能科学研究院
(兰可)，中国原子能科学研究院(施义晋) |
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| 摘 要： | 利用微扰展开技术推导出变参数波振器的小信号增益两个近似求积表达式并将其计算结果与数值模拟结果进行了比较,二者吻合很好。利用近似解析式对小信号增益进行了初步探讨,得到了电子入射能量可低于初始谐振能,能散度允许范围受波振器设计影响以及降低锥度改变率可提高小信号增益等新结论。
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| 关 键 词： | 自由电子激光 变参数波振器 小信号增益 |
FORMULAS FOR SMALL SIGNAL GAIN OF VARIABLE PARAMETER UNDULATOR |
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| Lan Ke and Shi Yijin Intitule of Atomic Energy of China.FORMULAS FOR SMALL SIGNAL GAIN OF VARIABLE PARAMETER UNDULATOR[J].High Power Laser and Particle Beams,1991,3(1):12-22. |
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| Authors: | Lan Ke and Shi Yijin Intitule of Atomic Energy of China |
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| Institution: | Lan Ke and Shi Yijin Intitule of Atomic Energy of China |
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| Abstract: | Two approximate analytical expressions for small signal gain (S. S.G.) of variable parameter undulator Free Electron Laser (FEL) are obtained by disturbance method. The calculated results of them are in good agreement with those by numerical simulations. Based on those expressions, S.S.G. scalling laws of FEL with tapered undulator are derived and it is concluded that the injected energy of electron beam should be lower than that for the initial resonance . |
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| Keywords: | small signal gain free electron laser tappered undulator |
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