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decay |
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decayThe reduction of strength of a signal or charge. decay 1. decomposition, as of vegetable matter 2. rotten or decayed matter 3. Physics a. See radioactive decay b. a spontaneous transformation of an elementary particle into two or more different particles c. of an excited atom or molecule, losing energy by the spontaneous emission of photons 4. Physics a gradual decrease of a stored charge, magnetic flux, current, etc., when the source of energy has been removed 5. Music the fading away of a note
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The particles decayed quickly, and by carefully measuring the energies of decay products, the scientists calculated the phi mesons' masses. We have designed an experiment to maximize the solid angle for detection of all decay products (apart from the antineutrino) and to reduce the probability of correlated background events. The isotope Bismuth-213, the radioactive decay product of Actinium-225, has shown promising results in research into new treatments for two deadly cancers, lymphoma and leukemia. |
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