| 单词 | prompt critical |
| 释义 | > as lemmasprompt critical prompt critical adj. Nuclear Physics (of a reactor) critical even when the effect of delayed neutrons is neglected and prompt neutrons alone are considered. ΘΚΠ the world > matter > physics > atomic nucleus > nuclear fission > [adjective] > maintaining chain reaction critical1947 prompt critical1954 1954 R. Stephenson Introd. Nucl. Engin. ii. 64 When the k for a U235 reactor is exactly equal to 1·0073, there is sufficient reactivity to maintain the chain reaction by means of the prompt neutrons alone, and the reactor is said to be prompt critical. 1973 D. R. Inglis Nucl. Energy IV. 120 Plutonium has only about one-third as many delayed neutrons as does uranium.., and this provides only a narrow margin for adjustments below a prompt critical condition. 2003 B. Burton Nucl . Power, Pollution & Politics vii. 166 A failing in the design..was the positive temperature coefficient at low power, i.e. if the temperature rose, so did the power, the response being so rapid that the reactor went prompt critical. < as lemmas |
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