Prompt Critical

In nuclear engineering, an assembly is prompt critical if for each nuclear fission event, one or more of the immediate or prompt neutrons released causes an additional fission event. This causes a rapid, exponential increase in the number of fission events. Prompt criticality is a special case of supercriticality.

Read more about Prompt Critical:  Criticality, Critical Versus Prompt-critical, Nuclear Reactors, List of Accidental Prompt Critical Excursions, Nuclear Weapons

Famous quotes containing the words prompt and/or critical:

    How prompt we are to satisfy the hunger and thirst of our bodies; how slow to satisfy the hunger and thirst of our souls!
    Henry David Thoreau (1817–1862)

    To take pride in a library kills it. Then, its motive power shifts over to the critical if admiring visitor, and apologies are necessary and acceptable and the fat is in the fire.
    Carolyn Wells (1862–1942)