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2. Fission products (by element) - Wikipedia

   en.wikipedia.org/wiki/Fission_products_(by_element)

   Fission product yields by mass for thermal neutron fission of U-235 and Pu-239 (the two typical of current nuclear power reactors) and U-233 (used in the thorium cycle). This page discusses each of the main elements in the mixture of fission products produced by nuclear fission of the common nuclear fuels uranium and plutonium.

3. Plutonium-239 - Wikipedia

   en.wikipedia.org/wiki/Plutonium-239

   Plutonium-239 can also absorb neutrons and fission along with the uranium-235 in a reactor. Of all the common nuclear fuels, 239 Pu has the smallest critical mass . A spherical untamped critical mass is about 11 kg (24.2 lbs), [ 2 ] 10.2 cm (4") in diameter.

4. Traveling wave reactor - Wikipedia

   en.wikipedia.org/wiki/Traveling_wave_reactor

   Red: uranium-238, light green: plutonium-239, black: fission products. Intensity of blue color between the tiles indicates neutron density A traveling-wave reactor ( TWR ) is a proposed type of nuclear fission reactor that can convert fertile material into usable fuel through nuclear transmutation , in tandem with the burnup of fissile material.

5. UK to dispose of radioactive plutonium stockpile - AOL

   www.aol.com/news/uk-dispose-radioactive...

   Victoria Gill - Science correspondent, BBC News. January 24, 2025 at 12:04 PM ... one of the products is plutonium. ... Microsoft is 'flooring it' on AI in 2025 — it's time to buy the stock ...

6. Weapons-grade nuclear material - Wikipedia

   en.wikipedia.org/wiki/Weapons-grade_nuclear_material

   To reduce the concentration of Pu-240 in the plutonium produced, weapons program plutonium production reactors (e.g. B Reactor) irradiate the uranium for a far shorter time than is normal for a nuclear power reactor. More precisely, weapons-grade plutonium is obtained from uranium irradiated to a low burnup.

7. Fission product yield - Wikipedia

   en.wikipedia.org/wiki/Fission_product_yield

   The table in the next section ("Ordered by yield") gives yields for notable radioactive (with half-lives greater than one year, plus iodine-131) fission products, and (the few most absorptive) neutron poison fission products, from thermal neutron fission of U-235 (typical of nuclear power reactors), computed from [permanent dead link ‍].

8. Plutonium - Wikipedia

   en.wikipedia.org/wiki/Plutonium

   Trace amounts of plutonium-238, plutonium-239, plutonium-240, and plutonium-244 can be found in nature. Small traces of plutonium-239, a few parts per trillion , and its decay products are naturally found in some concentrated ores of uranium, [ 54 ] such as the natural nuclear fission reactor in Oklo , Gabon . [ 55 ]

9. Nuclear reprocessing - Wikipedia

   en.wikipedia.org/wiki/Nuclear_reprocessing

   Nuclear reprocessing is the chemical separation of fission products and actinides from spent nuclear fuel. [1] Originally, reprocessing was used solely to extract plutonium for producing nuclear weapons. With commercialization of nuclear power, the reprocessed plutonium was recycled back into MOX nuclear fuel for thermal reactors. [2]