A UNIFIED ONE-DIMENSIONAL ANALYSIS OF THE GAIN MECHANISM IN FREE-ELECTRON LASERS WITH HELICAL OR PLANAR MAGNET ARRAYS

被引：5
作者：
FIELDING, PJ
机构：
来源：
INTERNATIONAL JOURNAL OF ELECTRONICS | 1981年 / 51卷 / 05期
关键词：
D O I：
10.1080/00207218108901364
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A one-dimensional model of the free electron laser (FEL) in which the electron beam is treated as a relativistic fluid is used to determine in a uniform fashion the small-signal gain for all regimes of interest where thermal spread in the beam is negligible. The close relationship between FEL gain theory and that of the travelling-wave tube is discussed, and it is shown that in general the gain in a planar magnet array is significantly lower than that obtainable under equivalent conditions in a helical array of the same field strength and periodicity.
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页码：621 / 636
页数：16
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