A Generalized Formulation of Free-Electron Lasers in the Low-Gain Regime Including Transverse Velocity Spread and Wiggler Incoherence

Abstract

It is shown that in the small-signal, low-gain regime, an analytic exprsesion for the gain can be derived which is valid for a general electron distribution function and general longitudinal variation of the transverse magnetic field pump. This expression is used to evalute the effects on the gain curve due to transverse momentum spread in the beam as well as inaccuracies (incoherence) in the magnetic pump phase and amplitude. The restricting criteria for the neglect of these effects are derived.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1981
Accession Number
ADA104834

Entities

People

  • A. Gover
  • P. Sprangle

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Amplitude
  • Amplitude Modulation
  • Distribution Functions
  • Electromagnetic Fields
  • Electron Beams
  • Electrons
  • Equations
  • Free Electron Lasers
  • Free Electrons
  • Gain
  • Integral Equations
  • Lasers
  • Magnetic Fields
  • Modulation
  • Phase Modulation
  • Scattering
  • Statistical Analysis

Fields of Study

  • Physics

Readers

  • Plasma Physics / Magnetohydrodynamics
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Microelectronics