Accession Number : AD0719381

Title :   Experiments in a Large, Non-Equilibrium MHD Generator with Cesium Seeded, Noble Gases and Heated Electrodes.

Descriptive Note : Technical rept.,

Corporate Author : GENERAL ELECTRIC CO PHILADELPHIA PA SPACE DIV

Personal Author(s) : Zauderer,B. ; Tate,E.

Report Date : FEB 1971

Pagination or Media Count : 18

Abstract : An experimental study was performed of the operating characteristics of a linear, supersonic Faraday generator, having heated wire electrodes suspended in the gas flow. The test gases were argon, neon, helium seeded with 0.8% cesium. It was observed that locating the electrode outside the cold boundary layer greatly reduced the current ignition voltage at the electrodes below that obtained previously with flush mounted electrodes. However, heating the electrodes to 1600K temperatures produced no significant improvement in the electrode performance over that obtained with room temperature electrodes at current densities of about 10 amp/sq/cm. In both cases, the electrode conduction was through arc spots with cathode losses of about 60V. (Author)

Descriptors :   (*MAGNETOHYDRODYNAMIC GENERATORS, OPERATION), (*PLASMA MEDIUM, TURBULENCE), RARE GASES, CESIUM, GAS IONIZATION, ELECTRON DENSITY, ELECTRODES, ELECTRICAL PROPERTIES

Subject Categories : Electric Power Production and Distribution
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE