Accession Number : AD0606889

Title :   EXPERIMENTAL STUDIES OF STRONG HALL EFFECTS AND VXB INDUCED IONIZATION,

Corporate Author : AVCO EVERETT RESEARCH LAB EVERETT MASS

Personal Author(s) : Klepeis,J. ; Rosa,R. J.

Report Date : SEP 1964

Pagination or Media Count : 12

Abstract : The document recounts studies performed during the last three years using a graphite inert gas heater, typical flow conditions being 100gm/sec argon at one atmosphere pressure and 1800 to 2000 Kelvin seeded with 0.1 to 1% cesium vapor. The aim of work was primarily to study MHD channel and electrode performance at high values of Omega (TAU) (5 to 15) and secondarily, to look for the occurrence of extra-thermal ionization. Many different channel and electrode configurations were tested. Straight segmented electrode channels did not perform well, apparently due to nonuniformity created by extra-thermal ionization over the electrode walls. Channel geometries in which the normal current closes upon itself performed much better and substantial enhancement of the power output due to V x B induced ionization was observed. The results correlate well with results obtained in applied electric fields and with theory when energy loss due to radiation is included. (Author)

Descriptors :   (*MAGNETOHYDRODYNAMICS, GENERATORS), (*HALL EFFECT, MAGNETOHYDRODYNAMICS), (*GAS IONIZATION, MAGNETOHYDRODYNAMICS), HEATERS, ELECTRODES, GRAPHITE, ELECTRODES

Distribution Statement : APPROVED FOR PUBLIC RELEASE