Chaos in an ion-channel free-electron laser with realistic helical wiggler

被引：6
作者：
Esmaeilzadeh, Mahdi [1 ]
Taghavi, Amin [2 ]
机构：
[1] Iran Univ Sci & Technol, Dept Phys, Tehran 16844, Iran
[2] Islamic Azad Univ, Dept Appl Sci, Qaemshahr Branch, Qaemshahr, Iran
来源：
PHYSICS OF PLASMAS | 2012年 / 19卷 / 11期
关键词：
EQUILIBRIUM ELECTRONS; SPONTANEOUS EMISSION; KOLMOGOROV-ENTROPY; POINCARE MAPS; GUIDE FIELD; TRAJECTORIES; DYNAMICS; ORBITS; BEHAVIOR; GAIN;
D O I：
10.1063/1.4764891
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：
Chaotic behavior of an electron motion in a free-electron laser with realistic helical wiggler and ion-channel guiding is studied using Poincare surface-of-section maps. The effects of a realistic electron beam density on chaotic electron dynamics are investigated by considering an electron beam with Gaussian density profile in radial distance. The effects of self-fields on chaotic electron dynamics are investigated for different Gaussian beam parameters, and the results are compared with those of uniform electron beam. It is shown that the electron chaotic behavior can be controlled by changing the Gaussian beam parameter. Also, the chaotic behavior can be controlled by increasing the ion-channel and/or the electron beam densities. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4764891]
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页数：7
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