Plutonium-233 is a radioactive isotope of plutonium that is produced from the neutron bombardment of uranium-232. It has a half-life of about 27 years, making it useful in various nuclear applications, including as a potential fuel for nuclear reactors. This isotope can also be used in the production of nuclear weapons. However, its use is limited due to the challenges in handling and processing, as well as concerns about nuclear proliferation. Overall, plutonium-233 plays a significant role in discussions about nuclear energy and security.