EXPERIMENTAL MAGNETOHYDRODYNAMIC TURBULENCE INVESTIGATIONS
Abstract
Previous investigations of MHD turbulence are reviewed briefly, and a short description of the apparatus, a stabilized linear pinch device, is presented. Improvements in the frequency response of the magnetic probes and RC integrators and modifications to the design of the high-pass filters are discussed. The following experimental results obtained during the recent six month period are presented: (1) autocorrelation measurements have been performed on a set of Kerr cell photographs of the pinch to determine the wavelength of the instabilities, (2) promising results have been obtained using an x-y oscilloscope to determine the degree of correlation between signals from magnetic probes separated by varying distances, (3) Alfven wave propagation of the magnetic field fluctuations was observed by the phase shift between two probe signals, (4) some analyses have been made of the rms values of B and its first and 2nd derivatives to t, and the maximum frequency of the turbulence has been determined, and (5) high-quality Kerr cell photographs of the pinch have been taken on color film, using a new Kerr cell with a fluid which transmits the entire visible spectrum. The need for automatic data reduction techniques and for digital computer processing of data is also discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 16, 1962
- Accession Number
- AD0296526
Entities
People
- E. B. Turner
Organizations
- The Aerospace Corporation