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Diagram of a MMRTG. The multi-mission radioisotope thermoelectric generator (MMRTG) is a type of radioisotope thermoelectric generator (RTG) developed for NASA space missions [1] such as the Mars Science Laboratory (MSL), under the jurisdiction of the United States Department of Energy's Office of Space and Defense Power Systems within the Office of Nuclear Energy.
Aerojet Rocketdyne is the prime contractor to the US Department of Energy for the Multi-mission Radioisotope Thermoelectric Generator. The first flight MMRTG is currently powering the Mars Curiosity Rover, and a second flight unit powers the Perseverance Rover. [citation needed]
Silicon-germanium (SiGe) thermoelectrics have been used for converting heat into electrical power in spacecraft designed for deep-space NASA missions since 1976. This material is used in the radioisotope thermoelectric generators (RTGs) that power Voyager 1 , Voyager 2 , Galileo , Ulysses , Cassini , and New Horizons spacecraft.
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Diagram of an RTG used on the Cassini probe. A radioisotope thermoelectric generator (RTG, RITEG), sometimes referred to as a radioisotope power system (RPS), is a type of nuclear battery that uses an array of thermocouples to convert the heat released by the decay of a suitable radioactive material into electricity by the Seebeck effect.
Lætitia H. Delmau, recipient of the prestigious 2024 Glenn T. Seaborg Actinide Separations Award and a distinguished radiochemist in the Radioisotope Science and Technology Division at Oak Ridge ...
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