Accession Number:

AD0606889

Title:

EXPERIMENTAL STUDIES OF STRONG HALL EFFECTS AND VXB INDUCED IONIZATION,

Descriptive Note:

Corporate Author:

AVCO EVERETT RESEARCH LAB EVERETT MASS

Personal Author(s):

Report Date:

1964-09-01

Pagination or Media Count:

12.0

Abstract:

The document recounts studies performed during the last three years using a graphite inert gas heater, typical flow conditions being 100gmsec 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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE