Influence of self-fields on coupled waves in free electron laser with ion-channel guiding

被引：7

作者：

Masoudnia, L. ^{[1
]}

Maraghechi, B. ^{[1
]}

Mohsenpour, T. ^{[1
]}

机构：

[1] Amirkabir Univ Technol, Dept Phys, Tehran, Iran

来源：

PHYSICS OF PLASMAS | 2009年 / 16卷 / 07期

关键词：

dispersion (wave); plasma diagnostics; plasma instability; plasma production by laser; plasma transport processes; plasma waves; PLANAR WIGGLER; TRAJECTORIES; GAIN;

D O I：

10.1063/1.3170901

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

In this study, the equilibrium orbits and their stability, under the influence of self-electric and self-magnetic fields, are analyzed. A dispersion relation for the Raman regime free electron laser with a helical wiggler magnetic field and ion-channel guiding is derived and analyzed, taking into account self-field effects of the electron beam. This dispersion relation is solved numerically to study unstable couplings between all wave modes. New unstable orbits, in the first part of the group I orbits and in the resonance region of the group II orbits, are found. It was found that self-fields reduce the growth rate of the group I orbits and increase it in the group II orbits.

引用

页数：10

共 14 条

[1]

Chen Xi, 2000, Acta Electronica Sinica, V28, P61

[2] Self-fields in an ion-channel free-electron laser [J].