Accession Number : ADA192230

Title :   Development of Liquid Metal Field-Emission Sources for Use in Fast Repetitive Opening Switches.

Descriptive Note : Final technical rept. 1 Jul 86-31 Oct 87,

Corporate Author : SRI INTERNATIONAL MENLO PARK CA

Personal Author(s) : Coggiola, Michael J

PDF Url : ADA192230

Report Date : Jan 1988

Pagination or Media Count : 79

Abstract : Liquid metal field-emission sources appear to have desirable characteristics as the active element of a high-current repetitive switch. The results we obtained indicate that many of the operational parameters of these devices can be controlled, although the mechanisms are not yet understood. In particular, the enhanced mode of operation found for the Gallium/Indium/Argon system gives very large, narrow current pulses by an unknown mechanism. The use of various diagnostics, including the dispersed optical emission, may provide some insight into these mechanisms. Additional research is required to determine the optimum configuration for a practical switch. The choice of metals, the diode geometry, and the triggering mechanism will need to be addressed before the liquid metal field-emission device can be incorporated into an active switch.

Descriptors :   *LIQUID METALS, *SWITCHES, ARGON, CONFIGURATIONS, DIODES, DISPERSING, EMISSION, FIELD EMISSION, GALLIUM, GEOMETRY, INDIUM, METALS, OPENING(PROCESS), OPERATION, OPTICAL PROPERTIES, OPTIMIZATION, PARAMETERS, SOURCES

Subject Categories : Electrical and Electronic Equipment
      Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE