Accession Number : ADA135946

Title :   Ohmic Heating of the Polar F-Region by HF (High Frequency) Pulse,

Corporate Author : CALIFORNIA UNIV LOS ANGELES CENTER FOR PLASMA PHYSICS AND FUSION ENGINEERING

Personal Author(s) : Shoucri,M M ; Morales,G J ; Maggs,J E

PDF Url : ADA135946

Report Date : Oct 1983

Pagination or Media Count : 49

Abstract : A study of the modifications produced by high power, high frequency (HF) waves in the F-region of a quiet (low solar cycle) polar ionosphere is presented. In the polar geometry, maximum Ohmic heating occurs producing significant changes to the zero order electron temperature and density profiles. The temporal and spatial aspects of these changes are calculated and their effects on relevant ionospheric parameters, such as the d.c. conductivity tensor, are found. An interesting finding is the generation of density cavities at the reflection point of the HF waves. A survey of the dependence of the various effects on HF pump parameters is made. (Author)

Descriptors :   *Ionospheric modification, *F region, *Polar regions, *Heating, *Heat transfer, *High frequency, *Radio waves, Electric fields, Pulse modulation, Plasmas(Physics), Geomagnetism, Electrostatic fields, Radiant flux density, Electron density, Electromagnetic wave propagation

Subject Categories : Atmospheric Physics
      Thermodynamics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE