What is fissile?

  • (adj): Capable of undergoing nuclear fission.
    Synonyms: fissionable
    See also — Additional definitions below

Fissile

In nuclear engineering, a fissile material is one that is capable of sustaining a chain reaction of nuclear fission. By definition, fissile materials can sustain a chain reaction with neutrons of any energy. The predominant neutron energy may be typified by either slow neutrons (i.e. a thermal system) or fast neutrons. Fissile materials can be used to fuel thermal reactors, with a neutron moderator; fast-neutron reactors, with no moderators; and nuclear explosives.

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Some articles on fissile:

Fissile - Nuclear Fuel
... in suitable quantities Capture-fission ratios of fissile nuclides Thermal neutrons Epithermal neutrons σF σγ % σF σγ % 46. 8.0% 233U 140. 16 ... Uranium-233 bred from thorium-232 by neutron capture Fissile nuclides do not have a 100% chance of undergoing fission on absorption of a neutron ...
Mark 8 Nuclear Bomb - Description
... a gun type nuclear bomb, which rapidly assembles several critical masses of fissile nuclear material by firing a fissile projectile or "bullet" into a hollow opening in a larger ...
Uranium
... has the distinction of being the only naturally occurring fissile isotope ... and is fertile, meaning it can be transmuted to fissile plutonium-239 in a nuclear reactor ... Another fissile isotope, uranium-233, can be produced from natural thorium and is also important in nuclear technology ...
Liquid Fluoride Thorium Reactor - Breeding Basics
... The first is a small amount of fissile, which splits ("burns") when hit by neutrons, releasing a large amount of energy and also releasing two or three new neutrons ... These can split more fissile material, resulting in a continued chain reaction ... Examples of fissile fuels are U-233, U-235 and Pu-239 ...
Mark 10 Nuclear Bomb
... Mark 8, is a Gun-type nuclear weapon, which rapidly assembles several critical masses of fissile nuclear material by firing a fissile projectile or "bullet" into a hollow ... nuclear bomb which was lighter and used considerably less fissile nuclear material ...

More definitions of "fissile":

  • (adj): Capable of being split or cleft or divided in the direction of the grain.
    Example: "Fissile crystals"; "fissile wood"