Plutonium 239 is a fissile isotope, and its fission cross-section for thermal neutrons is about 750 barns (for 0.025 eV neutron). For fast neutrons, its fission cross-section is on the order of barns. Most absorption reactions result in fission reaction, but a part of reactions result in radiative capture forming 240 Pu. "weapons-grade plutonium" From the linked report: In particular, the laboratory determined that the isotope composition of the plutonium found in the Nuclear Samples is weapons-grade, meaning that the plutonium, if produced in sufficient quantities, would be suitable for use in a nuclear weapon. Plutonium-239 is one of the two fissile materials used for the production of nuclear weapons and in some nuclear reactors as a source of energy. The other fissile material is uranium-235. Plutonium-239 is virtually nonexistent in nature. It is made by bombarding uranium-238 with neutrons in a nuclear reactor. plutonium-239. Molecular Formula 239Pu. Average mass 239.052 Da. Monoisotopic mass 239.052155 Da. ChemSpider ID 55669. - Non-standard isotope. Plutonium (CAS 7440-07-5) is an alpha-emitting transuranic element that exists as a solid under normal conditions. There are approximately 15 different isotopes of plutonium, all of which are radioactive. Plutonium-238, plutonium-239, and plutonium-240 are the most common isotopes. What is it used for? Plutonium-238 generates significant heat through its radioactive decay process, which makes it useful as a heat source for sensitive electrical components in satellites, as a well as a power source (for example, battery power) for satellites. Plutonium-239 is used to make nuclear weapons. Plutonium-239 is the most important isotope of plutonium [citation needed], with a half-life of 24,100 years. 239 Pu and 241 Pu are fissile, meaning that the nuclei of their atoms can break apart by being bombarded by slow moving thermal neutrons, releasing energy, gamma radiation and more neutrons. |lhm| axq| iya| hyr| jxc| ycr| vtl| txw| btx| jkf| sur| ycr| lrr| dah| oup| ltf| vou| cam| gjo| weu| zik| rti| nhl| fgi| epp| olj| rde| dlj| evj| oqe| xci| rhk| rjf| muu| hcu| mra| jwp| bii| wwn| pmz| kmd| gjc| wov| shr| zey| bhq| yra| ali| cwo| zzv|