Power enhancement via an ion-channel in a Raman free-electron laser

被引：0
作者：
Huang, Xiaoli [1 ,2 ]
Zhang, Shi-Chang [3 ]
机构：
[1] Xihua Univ, Sch Elect Engn & Elect Informat, Chengdu 610039, Sichuan, Peoples R China
[2] Univ Fribourg, Dept Phys, CH-1700 Fribourg, Switzerland
[3] Southwest Jiaotong Univ, Sch Informat Sci & Technol, Campus Mail Box 50, Chengdu 610031, Sichuan, Peoples R China
来源：
LASER PHYSICS | 2018年 / 28卷 / 09期
关键词：
free-electron laser; power enhancement; ion-channel; relativistic electron beam; GUIDE; MICROWAVE; FIELD;
D O I：
10.1088/1555-6611/aacb09
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
As a high-power and high-efficiency coherent radiation source, the free-electron laser extends to two unique spectra: the region in the ultra-violet, x-and gamma-rays, and the range in the millimeter-and terahertz-waves. Based on credible simulations, it is shown that the nonlinear power of a Raman free-electron laser in a millimeter wave range goes up and gets an increase of at least 9% when an ion-channel is applied to the beam-wave interaction chamber. A physical explanation is that the ion-channel weakens the velocities spread over the electron beam and, therefore, improves the electron-beam transportation quality and the beam-wave interaction.
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页数：4
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