Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun physics A return to a point at which a nuclear reaction becomes self-sustaining.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

re- +‎ criticality

Examples

  • Boron absorbs neutrons and helps prevent so-called recriticality, in which the nuclear reaction accelerates and reaches a self-sustaining level that is difficult to stop.

    Japan to Head Off Hydrogen Blast

  • Kyushu University's Mr. Kudo said that the restart of fission, a phenomenon known as recriticality, could not be ruled out until the reactors could be opened, allowing for an examination of the melted fuel.

    NYT > Home Page

  • Kyushu University's Mr. Kudo said that the restart of fission, a phenomenon known as recriticality, could not be ruled out until the reactors could be opened, allowing for an examination of the melted fuel.

    NYT > Home Page

  • The possibility of recriticality is not zero,'' TEPCO said in announcing steps to counter a possible fall in water levels in the pool storing the rods.

    New Fukushima fear: Spent fuel at No. 4 might restart chain reaction

  • Tepco, the plant's operators, are considering spraying the reactor with boric acid from overhead, warning: ''The possibility of recriticality is not zero.

    Japan nuclear crisis - live updates

  • Asked about the chance of meltdown, the company's answered with the memorable "the possibility of recriticality is not zero".

    Embattled Tepco faces its BP moment over Fukushima nuclear disaster

  • Tepco, the plant's operators, are considering spraying the reactor with boric acid from overhead, warning: ''The possibility of recriticality is not zero.

    The Guardian World News

  • It seems to suggest that if recriticality is to occur, that the reactor could heat up to unrestrained temperatures that would definitely breach the containment.

    The Guardian World News

  • Experts have also expressed concern over signs of sporadic "recriticality" of the fuel, a phenomenon in which nuclear fission resumes in melted nuclear fuel lying on the floor of a storage pool or reactor core.

    NYT > Home Page

  • I'm not much of a scientist, but I found a paper on the results of recriticality in a BWR boiling water reactor which I believe the Fukushima reactors are.

    The Guardian World News

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