Quantum plasma fluid model for high-gain free-electron lasers

被引：49

作者：

Serbeto, A. ^{[1
]}

Monteiro, L. F. ^{[1
]}

Tsui, K. H. ^{[1
]}

Mendonca, J. T. ^{[2
]}

机构：

[1] Univ Fed Fluminense, Inst Fis, BR-24210346 Rio De Janeiro, Brazil

[2] Inst Super Tecn, IPFN, P-1049001 Lisbon, Portugal

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2009年 / 51卷 / 12期

关键词：

THERMAL-WAVE MODEL; STIMULATED-EMISSION; MAGNETIC-FIELD; BEAM; FEL;

D O I：

10.1088/0741-3335/51/12/124024

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：

Starting from the eikonal approximation (geometrical optics), a set of nonlinear quantum plasma fluid equations to describe the quantum free-electron laser (FEL) is presented. Subsequently, by using these fluid equations for a relativistic electron beam, interacting with stimulated radiation and an optical wiggler field, a general dispersion relation for quantum FEL instability is derived taking into account the beam space-charge mode modulated by the ponderomotive potential well. It is shown that the saturation time for the quantum FEL instability can be estimated from the solutions of three-wave coupled equations which describe the FEL dynamics in the fluid model.

引用

页数：9

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