Electromagnetic Wave Scattering from a Turbulent Plasma.
Abstract
The Doppler spectrum of electromagnetic radiation scattered by a turbulent plasma is calculated for the case when the incident wave is a high frequency microwave or a laser beam and is not of sufficient intensity to heat the plasma. The differential scattering cross section is expressed in terms of the power spectrum of the current density fluctuations, and the wave equation and the equations of continuity and momentum for the electrons are analysed by means of the repeated cascade theory of turbulence. The equation governing the current density spectrum in the universal equilibrium range consists of three terms: a term representing the excitation of the spectrum near the wavenumber of the incident wave, a term which transfers energy across the spectrum at a rate controlled by an eddy viscosity and a molecular dissipation term. Solutions for the spectrum are obtained in the inertial and dissipation subranges.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1974
- Accession Number
- ADA004469
Entities
People
- Charles P. Martens
- Norman C. Jen
Organizations
- City College of New York