Pu239ksi
Pu239ksi is not a standard designation in nuclear science and may be a typographical variant of plutonium-239 (Pu-239). This article treats Pu-239 in a general, neutral way and notes that the term Pu239ksi, if encountered, may reflect context-specific spelling or transliteration.
Pu-239 is a radioactive, fissile isotope of plutonium with atomic number 94 and a mass number of
Production and handling of Pu-239 involve complex steps of irradiation, chemical separation, and careful containment due
Safety and regulatory aspects emphasize radiological hazards, including inhalation or ingestion risks from finely dispersed particles
See also: plutonium-238, mixed oxide fuel, nuclear nonproliferation, IAEA safeguards.