Accession Number : AD0275733

Title :   INVESTIGATION OF THE MONOCAPILLARY THERMIONIC EMITTER AS A DUAL SOURCE OF IONS AND ELECTRONS

Descriptive Note : Quarterly technical progress rept. no. 2, 15 Feb-15 May 62.

Corporate Author : GENERAL MOTORS CORP INDIANAPOLIS IND ALLISON DIV

Personal Author(s) : DRESSER,D.L. ; LAURITA,W.

Report Date : 15 MAY 1962

Pagination or Media Count : 42

Abstract : Theoretical and experimental work is reported on the investigation of a capillary emitter serving as a dual source of ions and electrons in a thermionic converter. Improved agreement was achieved between the experimental data obtained on monocapillary test devices and a model based on the sheath potential concept. Several processes for fabricating multicapillary emitters are described, including stacking fine wires, spark machining, electrolytical etching, vapor deposition, and electrochemical deposition. Experimental results are given to show the feasibility of circulating cesium by means of an electromagnetic pump. Finally, the design and fabrication of a closed cycle (gravity feed) multicapillary thermionic converter are discussed. (Author)

Descriptors :   *CESIUM, *ELECTRONS, *IONS, *THERMIONIC EMISSION, CAPILLARY TUBES, CATHODES, ION SOURCES, MANUFACTURING

Distribution Statement : APPROVED FOR PUBLIC RELEASE