Strontium-90 - Industrial and Aerospace Applications - Heat Source For RTGs

Heat Source For RTGs

The radioactive decay of strontium-90 generates significant amount of heat (0.921 W/g) of the isotope or approximately 0.536 W/g of the compound. and is cheaper than the alternative 238Pu. It is used as a heat source in many Russian/Soviet radioisotope thermoelectric generators, usually in the form of strontium fluoride. It was also used in the US Sentinel series of RTGs in the form of strontium titanate.

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