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  2. Nuclear fission - Wikipedia

    en.wikipedia.org/wiki/Nuclear_fission

    In nuclear fission events the nuclei may break into any combination of lighter nuclei, but the most common event is not fission to equal mass nuclei of about mass 120; the most common event (depending on isotope and process) is a slightly unequal fission in which one daughter nucleus has a mass of about 90 to 100 daltons and the other the ...

  3. Nuclear physics - Wikipedia

    en.wikipedia.org/wiki/Nuclear_physics

    Nuclear fission is the reverse process to fusion. For nuclei heavier than nickel-62 the binding energy per nucleon decreases with the mass number. It is therefore possible for energy to be released if a heavy nucleus breaks apart into two lighter ones. The process of alpha decay is in essence a special type of spontaneous nuclear fission. It is ...

  4. Nuclear explosion - Wikipedia

    en.wikipedia.org/wiki/Nuclear_explosion

    A nuclear explosion is an explosion that occurs as a result of the rapid release of energy from a high-speed nuclear reaction.The driving reaction may be nuclear fission or nuclear fusion or a multi-stage cascading combination of the two, though to date all fusion-based weapons have used a fission device to initiate fusion, and a pure fusion weapon remains a hypothetical device.

  5. Nuclear weapon - Wikipedia

    en.wikipedia.org/wiki/Nuclear_weapon

    A nuclear weapon [a] is an explosive device that derives its destructive force from nuclear reactions, either fission (fission or atomic bomb) or a combination of fission and fusion reactions (thermonuclear bomb), producing a nuclear explosion. Both bomb types release large quantities of energy from relatively small amounts of matter.

  6. Nuclear reactor physics - Wikipedia

    en.wikipedia.org/wiki/Nuclear_reactor_physics

    Nuclear reactor physics is the field of physics that studies and deals with the applied study and engineering applications of chain reaction to induce a controlled rate of fission in a nuclear reactor for the production of energy.

  7. Explained: What nuclear fusion breakthrough means [Video] - AOL

    www.aol.com/news/nuclear-fusion-could-change...

    Science & Tech. Shopping. Sports. Weather. 24/7 Help. ... Nuclear fission is the opposite of nuclear fusion in that the former unleashes energy by splitting heavy atoms apart. While fission and ...

  8. Critical mass - Wikipedia

    en.wikipedia.org/wiki/Critical_mass

    In nuclear engineering, a critical mass is the smallest amount of fissile material needed for a sustained nuclear chain reaction. The critical mass of a fissionable material depends upon its nuclear properties (specifically, its nuclear fission cross-section), density, shape, enrichment, purity, temperature, and

  9. Nuclear Fission Has Been Damn Near Impossible to Find ... - AOL

    www.aol.com/lifestyle/nuclear-fission-damn-near...

    Nuclear fission is a substantial part of the world’s energy mix, but out in the broader universe, fission is much harder to come by. Now, a new study from Los Alamos National Laboratory and ...