Thermionic gas switch

Details Thermionic gas switch Thermionic gas switch

1984-04-05

1986-09-09

DeMeo, Palmer C.

Electric lamp and discharge devices

Having heating means to control gas/vapor, gas or vapor...

Vapor generating

313618, 313310, H01J 1752, H01J 1706

Patent

active

046111476

ABSTRACT:
A temperature responsive thermionic gas switch having folded electron emitting surfaces. An ionizable gas is located between the emitter and an interior surface of a collector, coaxial with the emitter. In response to the temperature exceeding a predetermined level, sufficient electrons are derived from the emitter to cause the gas in the gap between the emitter and collector to become ionized, whereby a very large increase in current in the gap occurs. Due to the folded emitter surface area of the switch, increasing the "on/off" current ratio and adjusting the "on" current capacity is accomplished.

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"The Application of a Self-Actuating Shutdown System (SASS) to a Gas-Cooled Fast Reactor (GCFR)", by J. H. Germer et al., Report XL-895-00453, General Electric Co. Advanced Reactor Systems Department, Sunnyvale, Ca., Aug., 1981.

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