Free-electron laser with electrostatic wiggler

Liu, S; Cheng, X

doi:10.1063/1.339359

Title: Free-electron laser with electrostatic wiggler

Full Record
Other Related Research

Abstract

A new free-electron laser (FEL) scheme, using a periodic electrostatic field superposed on an electrostatic centrifugal system, is presented. By means of linear fluid theory, the Raman FEL dispersion equation is derived. We show that there is a new FEL instability near the electron transverse resonance besides the usual one near the beam resonance. The operating conditions, emission frequencies, and maximum growth rates of these two kinds of instabilities are obtained analytically. It is found that these results are in quite good agreement with numerical solutions of the dispersion equation.

Authors:: Liu, S; Cheng, X

Publication Date:: Thu Oct 15 00:00:00 EDT 1987

Research Org.:: Chengdu Institute of Radio Engineering, Chengdu, Sichuan, People's Republic of China

OSTI Identifier:: 6223497

Resource Type:: Journal Article

Journal Name:: J. Appl. Phys.; (United States)

Additional Journal Information:: Journal Volume: 62:8

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; FREE ELECTRON LASERS; BEAM OPTICS; DESIGN; ELECTROSTATICS; OPERATION; ELECTRON CYCLOTRON-RESONANCE; MASERS; THEORETICAL DATA; AMPLIFIERS; CYCLOTRON RESONANCE; DATA; ELECTRONIC EQUIPMENT; EQUIPMENT; INFORMATION; LASERS; MICROWAVE AMPLIFIERS; MICROWAVE EQUIPMENT; NUMERICAL DATA; RESONANCE; 420300* - Engineering- Lasers- (-1989)

Citation Formats


                    Liu, S, and Cheng, X. Free-electron laser with electrostatic wiggler.  United States: N. p., 1987. 
        Web.  doi:10.1063/1.339359.

Copy to clipboard


                    Liu, S, & Cheng, X. Free-electron laser with electrostatic wiggler.  United States.  https://doi.org/10.1063/1.339359

Copy to clipboard


                    Liu, S, and Cheng, X. 1987.  
        "Free-electron laser with electrostatic wiggler".  United States.  https://doi.org/10.1063/1.339359.

Copy to clipboard


                    
@article{osti_6223497,

  title        = {Free-electron laser with electrostatic wiggler},

  author       = {Liu, S and Cheng, X},

  abstractNote = {A new free-electron laser (FEL) scheme, using a periodic electrostatic field superposed on an electrostatic centrifugal system, is presented. By means of linear fluid theory, the Raman FEL dispersion equation is derived. We show that there is a new FEL instability near the electron transverse resonance besides the usual one near the beam resonance. The operating conditions, emission frequencies, and maximum growth rates of these two kinds of instabilities are obtained analytically. It is found that these results are in quite good agreement with numerical solutions of the dispersion equation.},

  doi          = {10.1063/1.339359},

  url          = {https://www.osti.gov/biblio/6223497},
  journal      = {J. Appl. Phys.; (United States)},
number       = ,

  volume       = 62:8,

  place        = {United States},

  year         = {Thu Oct 15 00:00:00 EDT 1987},

  month        = {Thu Oct 15 00:00:00 EDT 1987}

}

Copy to clipboard

Journal Article:

https://doi.org/10.1063/1.339359

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Free-electron laser--electrostatic electron cyclotron resonance maser hybrids

Journal Article Shenggang, L; Zhengbiao, O - Phys. Fluids; (United States)

The free-electron laser (FEL)--electrostatic electron cyclotron resonance maser (EECRM) hybrids, a new kind of FEL comprised of a relativistic electron beam and an electrostatic centrifugal field, are presented and studied in this paper. In a fluid dynamical linear theory, the dispersion equation for transverse electromagnetic (TEM) mode operation is derived, analyzed, and numerically solved. It is found both analytically and numerically that FEL instability occurs near beam resonance ((..omega../sub l/-k/sub l/v/sub parallel/)/sup 2/-..omega../sup 2/ (..gamma../sup -2//sub parallel/ -..beta../sup 2//sub parallel/..beta../sup 2//sub perpendicular/phi-dot/sup 2//sub 0// ..cap omega../sup 2//sub l/) = 0). However, FEL instability near cyclotron resonance (..omega../sub s/-k/sub s/v/sub parallel/more »« less
https://doi.org/10.1063/1.867017
Electrostatic free-electron laser

Journal Article Sheng-gang, Liu; Hong-xiu, Liu - Phys. Rev. A; (United States)

A new kind of free-electron-laser (FEL) scheme is proposed, that is, an FEL with an electrostatic centrifugal system of coaxial waveguide, called an ''electrostatic FEL'' for short. An annular relativistic electron beam in the laboratory frame is assumed to encounter a pump wave of TE mode. Solving the Vlasov-Maxwell equations, we have developed the kinetic theory of the above scheme, and obtained the nonlinear dispersion relation describing the various instabilities of the wave modes which can be supported by the system. We have also numerically solved the dispersion relation in the case of taking both pump wave and scattered wavemore »« less
https://doi.org/10.1103/PhysRevA.36.3837
Effects of electromagnetic wiggler and ion channel guiding on equilibrium orbits and waves propagation in a free electron laser

Journal Article Amri, Hassan; Mohsenpour, Taghi - Physics of Plasmas

In this paper, an analysis of equilibrium orbits for electrons by a simultaneous solution of the equation of motion and the dispersion relation for electromagnetic wave wiggler in a free-electron laser (FEL) with ion-channel guiding has been presented. A fluid model has been used to investigate interactions among all possible waves. The dispersion relation has been derived for electrostatic and electromagnetic waves with all relativistic effects included. This dispersion relation has been solved numerically. For group I and II orbits, when the transverse velocity is small, only the FEL instability is found. In group I and II orbits with relativelymore »« less
https://doi.org/10.1063/1.4940943
Linear theory of the collective Raman interaction in a free-electron laser with a planar wiggler and an axial guide field

Journal Article Freund, H; Davidson, R; Johnston, G - Physics of Fluids B; (USA)

A linear stability analysis of the collective Raman interaction in a free-electron laser with combined planar wiggler and axial guide magnetic fields is presented. The analysis involves a perturbation of the cold-fluid model of the interaction about the single-particle trajectories in the combined external fields, and the complete dispersion equation for a monoenergetic beam is obtained. In contrast to the case of a helical wiggler field in which the interaction excites a right-hand circularly polarized wave, the interaction for a planar wiggler and an axial guide field is with an elliptically polarized wave that contains both the left- and right-handmore »« less
https://doi.org/10.1063/1.859331
Self-consistent kinetic description of the free electron laser instability in a planar magnetic wiggler

Technical Report Davidson, R; Wurtele, J

The linearized Vlasov-Maxwell equations are used to investigate detailed free electron laser (FEL) stability properties for a tenuous relativistic electron beam propagating in the z-direction through the planar wiggler magnetic field. The theoretical model neglects longitudinal perturbations and transverse spatial variations. For low or moderate electron energy, there can be a sizeable modulation of beam equilibrium properties by the wiggler field and a concomitant coupling of the k'th Fourier component of the wave to the components k +- 2k/sub 0/, k +- 4k/sub 0/,... in the matrix dispersion equation. In the diagonal approximation, investigations of detailed stability behavior range frommore »« less

Similar Records