Effects of Background Plasma on Free Electron Laser with Planar Wiggler
Authors: Wang, M.; Liang, Z.; Yang, Z.
Source: International Journal of Infrared and Millimeter Waves, Volume 24, Number 6, June 2003 , pp. 1023-1033(11)
Dispersion equation of planar-wiggler free-electron laser with background plasma is derived using linear fluid theory. The characteristic of this plasma FEL is analyzed in detail. It is shown that reasonable background plasma density tends to improve FEL growth rate. We also find there exits a critical plasma density for FEL operating. When the background plasma density is higher than critical density, the FEL can no longer be excited.
Document Type: Research Article
Affiliations: Institute of High Energy Electronics, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, People's Republic of China
Publication date: 2003-06-01