plutonio

Plutonio is a chemical element with the symbol Pu and atomic number 94. It is a transuranic radioactive metal that belongs to the actinide series. Plutonium was first synthesized in 1940 at the University of California, Berkeley, by Glenn T. Seaborg, Edwin McMillan, Joseph W. Kennedy, and Arthur C. Wahl. The element is named after the dwarf planet Pluto.

Naturally occurring plutonium is found in extremely small quantities in uranium ores, resulting from the natural nuclear reaction of uranium-238. However, the vast majority of plutonium used today is produced artificially. This is achieved by irradiating uranium-238 with neutrons in nuclear reactors. Plutonium is a key component in nuclear weapons and is also used as a power source in radioisotope thermoelectric generators for spacecraft and in nuclear power plants.

Plutonium exists in several isotopic forms, with plutonium-239 being the most significant for its applications due to its fissile properties. It is a highly toxic substance, both chemically and radiologically. Its radioactivity poses a significant health hazard, and strict safety protocols are in place for its handling and containment. The management and disposal of plutonium waste are major concerns in the nuclear industry.