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nuclear chain reaction

   Also found in: Wikipedia 0.01 sec.
nuclear chain reaction [′nü·klē·ər ′chān rē‚ak·shən]
(nucleonics)
A succession of generation after generation of acts of nuclear division such that the neutrons set free in the nuclear disruptions of thenth generation split the fissile nuclei (233U,235U,239Pu) of the (n+ 1)st generation. Also known as chain reaction.


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He held in his hands the knowledge needed to create a perfect implosion that could trigger a nuclear chain reaction inside a small spherical core.
ADOLF HITLER was appointed chancellor of Germany many in January, Franklin Delano Roosevelt was inaugurated as president of the United States in March, Mohandas Gandhi carried out a hunger strike in May on behalf of the lower castes of India, the Vatican signed an accord with the Nazi regime in July, physicist and humanist Leo Szilard conceived of the nuclear chain reaction in September, and the Twenty-first Amendment to the U.
For starting a nuclear chain reaction in a reactor, the only important isotope is uranium-235, which accounts for JUST 7 out of 1000 atoms in the mined product.
 
 
 
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