光学学报, 1993, 13 (8): 756, 网络出版: 2007-12-07
波荡器入口区绝热压缩磁场分布对自由电子激光输出功率和效率的影响
Influence of the adiabatic-magnetic-field distribution at the entrance of wiggler on the output power and efficiency in a free-electron laser
摘要
本文对波荡器(Wiggler)入口区绝热压缩磁场分布对自由电子激光输出功率、增益、效率的影响,进行了非线性计算机模拟.结果表明:磁场幅值沿轴向接立方函数分布,比通常采用的正弦平方函数和平方函数这两种分布更好,更接近实验值.
Abstract
The influence of the adiabatic-magnetic-field distribution at the entrance of wiggler on the output power, gain, and efficiency in a free-electron laser is investigated in terms of nonlinear simulation. Results show that the distribution f(kwz) = (kwz/2πNw)3 is better and closer to the measured data than both f=sin2(kwz/4Nw) and f=(kwz/2πNw)2.
张世昌, 王文耀, 徐勇. 波荡器入口区绝热压缩磁场分布对自由电子激光输出功率和效率的影响[J]. 光学学报, 1993, 13(8): 756. 张世昌, 王文耀, 徐勇. Influence of the adiabatic-magnetic-field distribution at the entrance of wiggler on the output power and efficiency in a free-electron laser[J]. Acta Optica Sinica, 1993, 13(8): 756.
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