Last Updated
：2025/12/06
prompt critical
Adjective
not-comparable
Japanese Meaning
核分裂連鎖反応において、反応開始直後に放出される即時中性子（prompt neutrons）が単独で連鎖反応を持続できる臨界状態を表す。つまり、この状態では反応の進行がミリ秒単位で急変し、人間の操作で制御するにはあまりにも速いという特性を持つ。
Quizzes for review
(nuclear physics) Of the point where the prompt neutrons produced by a nuclear fission chain reaction are just sufficient to sustain the chain reaction on their own, past which changes in reaction power occur on a timeframe of milliseconds, too rapidly for a human operator to control.
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prompt critical
During the safety test the reactor briefly became prompt critical, and the ensuing power rise happened on a millisecond timescale that operators could not control.
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During the safety test the reactor briefly became prompt critical, and the ensuing power rise happened on a millisecond timescale that operators could not control.
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