Ionospheric Heating Analysis. HF Plasma Line Enhancements at Arecibo

Abstract

Remarkably strong enhancements (factors up to 10,000) of the plasma line were induced in the ionosphere by a powerful transmitter operating at the local plasma resonance frequency and observed by the incoherent scatter radar at Arecibo in January 1971. The intensities and spectral characteristics of the lines shifted upward and downward from the radar probing frequency are reported. The plasma line intensity is related to the power of the exciting wave in a non- linear way. The enhancement is observed when the exciting wave propagates in the ordinary magneto-ionic mode, but not when the exciting wave is in the extra- ordinary mode. In comparison with the Boulder heating experiment, neither the ionograms nor the photometer records show strong effects.

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Document Details

Document Type
Technical Report
Publication Date
Jun 22, 1971
Accession Number
AD0732884

Entities

People

  • Herbert C. Carlson
  • Robert L. Showen
  • William E. Gordon

Organizations

  • Rice University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Contracts
  • Electron Density
  • Electrons
  • Frequency
  • Government Procurement
  • Governments
  • Intensity
  • Ionograms
  • Ionosphere
  • Measurement
  • Observatories
  • Parametric Instability
  • Plasma Waves
  • Puerto Rico
  • Spectra
  • Transmitters

Fields of Study

  • Physics

Readers

  • Plasma Physics / Magnetohydrodynamics
  • Space/Atmospheric Physics.