CRRES Electric Field Power Spectra and Radial Diffusion Coefficients

Abstract

Combined Release and Radiation Effects Satellite (CRRES) Electric Field Instrument (EFI) data are used to determine the electric field power spectral density as a function of L and Kp over the frequency range 0.2 to 15.9 mHz. The power at each frequency is fit to the function P(L,Kp) = aLb exp(cKp). Assuming a purely electrostatic field and making several other assumptions regarding the azimuthal dependence of the field fluctuations, a Kp-dependent radial diffusion coefficient is computed from the power spectra. The model average for high activity (Kp=6) is between 1 to 2 orders of magnitude larger than that for low activity (Kp=1), dependent upon L and first invariant.

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Document Details

Document Type
Technical Report
Publication Date
Feb 25, 2005
Accession Number
ADA431876

Entities

People

  • A. G. Ling
  • D. E. Rowland
  • D. H. Brautigam
  • G. P. Ginet
  • J. Bass
  • J. M. Albert
  • J. R. Wygant

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Artificial Satellites
  • Coefficients
  • Coordinate Systems
  • Diffusion Coefficient
  • Electric Fields
  • Electrons
  • Electrostatic Fields
  • Magnetic Fields
  • Measurement
  • Power Spectra
  • Radiation
  • Radiation Effects
  • Space Weather
  • Spacecraft
  • Spectra

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Solar Physics

Technology Areas

  • Space
  • Space - Hall-Effect Thruster