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利用已获得的大信号自由电子激光增益公式,导出了激光平均增长率表达式,分析了自由电子激光中电子与辐射波相互作用的有效时间,讨论了其主要物理参量对相互作用有效时间的影响The expression of uniform grow rate of laser is derived by using the high - signal gain formula of FEL, the effective time of interaction between electron and radiative wave in the FEL is analysed, and the effects of major physical parameters on the effective time of interaction are discussed.
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