Radial dependence of the self-magnetic field in a free-electron laser

被引:0
|
作者
Kheiri, Golshad [1 ]
机构
[1] Urmia Univ, Fac Sci, Dept Phys, Orumiyeh, Iran
来源
APPLIED PHYSICS B-LASERS AND OPTICS | 2022年 / 128卷 / 07期
关键词
HELICAL-WIGGLER; DISPERSION-RELATION; CHAOTIC BEHAVIOR; TRAJECTORIES; GROWTH; ORBITS;
D O I
10.1007/s00340-022-07822-x
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The self-magnetic field due to wiggler-induced transversal velocity in a free-electron laser (FEL) has not attained accuracy so far. This self-field has gained constant expression in recent studies. However, to get a precise result, a self-magnetic field's variation by radial coordination (r) must be considered. In the current study, the calculation of self-magnetic field due to wiggler-induced transverse velocity in an FEL with a helical wiggler and axial magnetic field is presented with consideration of self field's variation by r. This calculation is performed using the Frobenius series method. Results showed that the self-magnetic field has a diamagnetic effect for group I and a paramagnetic effect for group II.
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页数:7
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