Absorption and Transformation of Electromagnetic Waves in the Vicinity of Electron Cyclotron Harmonics.

Abstract

The recent development of multikilowatt millimeter wave sources has motivated the study of electron cyclotron heating of tokamaks. The direct absorption of the ordinary and extraordinary modes at the first and second harmonics of the electron cyclotron frequency are examined. For K x B = O WKB theory is inapplicable and a full wave treatment is necessary to determine transmission, absorption, reflection and mode conversion coefficients. The ordinary wave is efficiently absorbed at the first harmonic. The extraordinary wave is efficiently absorbed at the second harmonic due to mode conversion of the incident wave to a highly damped electrostatic wave. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1977
Accession Number
ADA051938

Entities

People

  • Thomas M. Antonsen Jr.
  • Wallace M. Manheimer

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Charged Particles
  • Current Density
  • Cyclotron Resonance
  • Differential Equations
  • Dispersion Relations
  • Electric Fields
  • Electromagnetic Fields
  • Electromagnetic Wave Propagation
  • Electron Density
  • Electrons
  • Equations
  • Frequency
  • Integral Equations
  • Magnetic Fields
  • Wave Power
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Calculus or Mathematical Analysis
  • Pulsed Power and Plasma Physics.

Technology Areas

  • 5G
  • Microelectronics