CONTROLLED VENT FOR ISOTOPE FUEL CAPSULE

摘要

A controlled vent for an isotope fuel capsule utilizes physical passages for gas flow which are large enough to permit flow to take place be viscous or free molecular flow and are small enough or sufficiently tortuous to prevent passage of fuel particles. A plurality of punctured thin metal discs or foils are stacked together with the holes misaligned to form a continuous flow channel, thereby permitting gas generated within the capsule to escape through the vent. Thus, the weight and volume of the fuel capsule can be reduced since the internal pressure is reduced.