plutoniumisotopen

Plutonium is a transuranic radioactive chemical element with the symbol Pu and atomic number 94. Plutonium is a silvery-white actinide metal that tarnishes when exposed to air. It is chemically distinct from the lanthanides, and its chemistry is analogous to those elements. Plutonium is produced by the nuclear reaction of uranium in nuclear reactors. Plutonium is a highly radioactive, toxic metal. It is also fissile, meaning it can sustain a nuclear chain reaction. This property makes it a key component in nuclear weapons and nuclear reactors.

The most common isotopes of plutonium are plutonium-239 and plutonium-238. Plutonium-239 is the most important isotope for nuclear weapons and reactors. It is produced in nuclear reactors by the capture of neutrons by uranium-238. Plutonium-238 is used in radioisotope thermoelectric generators (RTGs), which are used to power spacecraft and other applications where a long-lasting, reliable power source is needed. Plutonium-238 decays by alpha emission, producing heat. This heat can be converted into electricity.

Plutonium is a highly toxic substance. It is also a carcinogen. If inhaled or ingested, it can cause cancer. Plutonium is also a hazardous material that must be handled with extreme care. It is typically stored in secure facilities to prevent its diversion for illicit purposes. The long half-lives of plutonium isotopes mean that it will remain a radioactive hazard for thousands of years.