Accession Number : AD0289280

Title :   EXPERIMENTAL AND THEORETICAL STUDIES OF MHD SHEAR HEATING

Corporate Author : PLASMADYNE CORP SANTA ANA CALIF

Report Date : SEP 1962

Pagination or Media Count : 1

Abstract : Magnetohydrodynamic (MHD) shear heating, which occurs at the interface of two counter-rotating layers of plasma, is evaluated as a means for rapidly heating a confined plasma. An experimental program to examine the feasibility of such a scheme was undertaken. The two interacting plasmas are initially set into rotational motion via the application of J x B Lorentz forces. Insofar as their longitudinal collisional velocities are concerned, these are produced in the coaxial plasma guns which are described. This technique (rotational shear) for heating a plasma has three important features: (1) although the Joule heating decreases as the plasma temperature rises because of a decrease in resistivity, the viscosity increases with temperature; (2) energy transfer to the plasmas becomes more efficient as their rotation increases; and (3) the magnetic field providing the rotational effect also serves to confine the plasma via a mirror machine configuration. (Author)

Descriptors :   *HEATING, *MAGNETOHYDRODYNAMICS, *PLASMAS(PHYSICS), ARGON, ELECTRIC DISCHARGES, MAGNETIC FIELDS, MICROWAVES, MOTION, OSCILLOGRAPHS, PHOTOGRAPHY, REFLECTOMETERS

Distribution Statement : APPROVED FOR PUBLIC RELEASE