Simulation of a Smith-Purcell free-electron laser with sidewalls: Copious emission at the fundamental frequency

被引：9
|
作者：
Donohue, J. T. [2 ]
Gardelle, J. [1 ]
机构：
[1] CEA, CESTA, F-33114 Le Barp, France
[2] Univ Bordeaux 1, Ctr Etud Nucl Bordeaux Gradignan, CNRS, IN2P3, F-33175 Gradignan, France
来源：
APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 16期
关键词：
free electron lasers; plasma simulation;
D O I：
10.1063/1.3641471
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The two-dimensional theory of the Smith-Purcell free-electron laser of Andrews and Brau [H. L. Andrews and C. A. Brau, Phys. Rev. ST Accel. Beams 7, 070701 (2004)] predicts that coherent Smith-Purcell radiation can occur only at harmonics of the frequency of the evanescent wave that is resonant with the beam. A particle-in-cell simulation shows that in a three-dimensional context, where the lamellar grating has sidewalls, coherent Smith-Purcell radiation can be copiously emitted at the fundamental frequency, for a well-defined range of beam energy. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3641471]
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页数：3
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