Collective Effects in the Free Electron Laser (FEL)

Abstract

With intense relativistic electron beams, such as generated by induction linear accelerators, pulsed transmission line accelerators or high current RF linacs, collective effects can play an important role in the FEL process. High gain FELs are said to operate in the Raman regime when collective effects dominate the usual ponderomotive effects. Collective effects may also play an important role in low gain FELs when the beam current is sufficiently high. In this paper the linear and nonlinear dynamics of the FEL mechanisms, including space charge effects, is analyzed. The various collective and noncollective operating regimes are discussed.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1984
Accession Number
ADA151742

Entities

People

  • C. W. Roberson
  • Chai AMei Tang
  • Phillip A. Sprangle

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Coherent Radiation
  • Dispersion Relations
  • Dynamics
  • Electromagnetic Fields
  • Electron Beams
  • Electrons
  • Energy
  • Equations
  • Free Electron Lasers
  • Free Electrons
  • High Gain
  • Lasers
  • Linear Accelerators
  • Magnetic Fields
  • Phase Velocity
  • Radiation
  • Space Charge

Fields of Study

  • Physics

Readers

  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Microelectronics
  • Space