Nonlinear Processes and Conversion Efficiency of Free Electron Laser
نویسندگان
چکیده
منابع مشابه
Nonlinear Simulation of Harmonically Coupled Two-Beam Free-Electron Laser
A nonlinear model of two-beam free-electron laser (FEL) in the absence of slippage is presented. The two beams are assumed to be cold with different energies and the fundamental resonance of the higher energy beam is at the third harmonic of lower energy beam. By using Maxwell’s equations and full Lorentz force equations of motion for the electron beams, coupled differential equations are deriv...
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Intermolecular reactions in and on icy films on silicate and carbonaceous grains constitute a major route for the formation of new molecular constituents in interstellar molecular clouds. In more diffuse regions and in protoplanetary discs, energetic radiation can trigger reaction routes far from thermal equilibrium. As an analog of interstellar ice-covered dust grains, highly-oriented pyrolyti...
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The class of large-amplitude travelling wave solutions to the nonlinear Vlasov-Maxwell equations are investigated in which the wave pattern is stationary in a frame of reference moving with the pondermotive phase velocity v = p w/(k + k0). Here, X0 = 27r/k 0 is the wavelength of the transverse helical wiggler field, and (wk) are the frequency and wavenumber of the saturated radiation field whic...
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3 Paul Scherrer Institute, Villigen PSI, 5232, Switzerland Abstract Energy extraction efficiency of a free electron laser (FEL) can be increased when the undulator is tapered after the FEL saturation. By use of ray equation approximation to combine the one-dimensional FEL theory and optical guiding approach, an explicit physical model is built to provide insight to the mechanism of the electron...
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A relativistic theory for two-stream free electron laser (FEL) with a one-dimensional helical wiggler and ion-channel guiding in the presence of self-fields are presented. A dispersion relation (DR) which includes coupling between the electromagnetic and the electrostatic waves is derived from a fluid model, with all of the relativistic terms related to the transverse wiggler motion. This DR is...
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ژورنال
عنوان ژورنال: The Review of Laser Engineering
سال: 1980
ISSN: 0387-0200,1349-6603
DOI: 10.2184/lsj.8.515