This article is about Aktinum. Plutonium-238 may be more efficient than the uranium-235 in the nuclear reactor.Because Plutonium-238 has a smaller threshold mass than uranium-235, it constantly collapses until the fission chain reaction is stopped by the steering rod, producing a large amount of heat energy (0.56 w/g)Is limited, because of the high price of Plutonium-238 (about 1,100,000 won per g) This isotope is used to distill the thermal retreat and water at the universe and the space station.In addition, Galileo and Apollo spacecraft (eg Apollo 14) also operated the heater with a kilogram weight of plutonium oxide-238;This heat also turns into electricity with the retreat.In the collapse of the Plutonium-238, the alpha particles are rarely harmful and does not accompany the gamma rays.Therefore, this isotope is used for energy sources of nuclear heart face makers (~ 160 mg).The energy in the nuclear heart face maker is five times longer than a regular battery.
Why is the use of Plutonium-238 limited?
High price